IS 1978 (1982): Line pipe - Internet Archive

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IS 1978 (1982): Line pipe [MTD 19: Steel Tubes, Pipes abdFittings]

IS: 1978- 1982 ( tle8flirmed 1 Q?$$+

SP”ECIFICATION FOR LINE’PIPE

( Second Revision )

Fourth Reprint FEBRUARY 1998

UDC 621.643.2 : 665.6/.7

0 Copyright 1984

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Gr 12 April 1984

Is:l!m-1982

Indian Standard SPECIFICATION FOR LINE PIPE

( Second Revision ) Steel Tubes, Pipes and Fittings Sectional Committee, SMDC 22

Chairman SHRI HARI BHU~HAN

C-11/67 Moti Bagh-I

New Delhi

Members [email protected]

SWR~A.S. AQARWAL Steel Tubes of India Ltd, Dewas SHRI D. V. N. SA~TRY (Alternate)

SWRI S. C. ANAND Bharat Steel Tubes Ltd, New Delhi SHRI R. K. ABROL ( Ahmate )

SHRI S. N. BASU Directorate General of Supplii h Disposals ( Inspec- tion Wing), New DeIhi

SHRI T. N. UBOVEJA ( A&mate)

CDR D. N. BERI Engii;-zegief’s Branch, Army Headquarters,

LCDR R. K. SURZ ( AL&mate )

BRIG S. D. S. BAALLA Kalinga Tubes Ltd, Calcutta SHRI P. K. MOHANTY ( Altnnnte)

SHRI D. P. BHATTACHARJEE Export Inspection Council, Calcutta SHRI S. C. ARORA ( Ahrnata )

SHRI J. D. BHINFARKAR Indian Oil Corporation Ltd, Bombay SHRI P. C. JOHARI ( Alternate )

SHRIB.B. CHAKRAVERTI Superintendence Co of India (P) Ltd, Calcutta SHRI A. K. SHOVE (Ahmate)

SHRI L. M. CHAUDHRI Public Works Department (Public Health Branch), Government of Haryana, Chandigarh

SHRZ K. K. GAXDHI ( Alternate) DEPW DIRECTOR STANDARDS Research, Designs & Standards Organization,

( Loco ) Ministry of Railways, Lucknow CHEMIST & METALLUROIST-I

(RDSO ) (Alternate) SHRI S. K. GHOSH Directorate General of Technical Development, New

Delhi SHRI K. A. SRIVASTAVA ( Altcmate)

( Co&wed on pate 2 )

&I Cqyighr 1984

BUREAU OF INDIAN STANDARDS

This publication is protected under the * Indian Co,uyrighf Acr ( XIV of 1957 ) and reproduction in whole or m part by any means except wirh written Permission of the publisher shall be deemed to be an infringement of copyright under the said Act.

h

IS : 197% - 19811

( Continuedfrom puge 1 )

Members Refircsenting

SHRI S. GOWRISANKARAN Bharat Heavy Electricals Ltd, Tiruchirapalli SHRI ONKAR S. KANWAR Assoptin of Indian Engineering Industry, New

e SHRI P. R. GUPTA ( Altarnata )

SHRI M. C. KESAVA RAO SHRI M. VEERABABU ( Altematr)

Hindustan Shipyard Ltd. Visakhapatnam

SHRI H. M. KAUL SHRI B. KUMAR

SHRI T. K. BASU ( Alfcmatu ) SHRI S. KUMAR

SHR~ S. CHANDRA ( Alternate) SRRI M. C. KUMARA(IWAMY

SHRI D. D~A (AI&ma&) SHRI P. K. MORAPATRA

SHRI H. S. BEDI ( Alfernatu )

SHRI K. MUKHERJEE

SHRI R. K. SINNHA ( Alteraotr ) SHIU S. NEELAK~TAN

Dn A. R. KE~KA~ (Altcmatr)

SHRI S. RAN~AWAWLW

Ministry of Agriculture Stewarts & Lloyds of India Ltd, Calcutta

Indian Register of Shipping, Bombay

Indian Tube Co Ltd, Jamshedpur

Steel Authority of India Ltd ( Rourkela S tee1 Plant ) , Rourkela

The Fertilizer (Planning & Development) India Ltd, Sindri

Zenith Steel Pipes h Industries Ltd, Khopoli

Tube Products of India, Madras SHRI M. THOLKAPPLAN ( Alternate )

SHRI G. P. ~ARABHAI Oil & Natural Gas Commission, Dehra Dun SHRI V. K. CHATIJRVEDI ( Ahnatc )

SHRI APOORVA SHAH Gujarat Steel Tubes Ltd, Ahmadabad SHRI H. J. TXIAKER ( Atfcrnntc )

SHRI P. T. SHANRARAN NAYAR Central Boilers Board, New Delhi SHRI G: S. GOSAL (Alternate)

SHR~ J. R. D. SONI Federation of Engineering Industries of India, New Delhi

SHRI A. N. RAO ( Ahrnate) SRRI B. R. TANEJA The Indian Seamless Metal Tut& Ltd, Bombay

SHRI 0. P. KAKKAR ( Alterna#c )

SEIRI C. R. RAMA RAO. Director General, IS1 ( Ex-ojicio Member ) Director ( Strut & Met) (Srcreta~)

Panel for Revision of IS : 1978 Line Pipe, SMDC 22 : P30

Convener

SHRI S. C. ANAND

Members

SHRI R. K. ABROL ( AItcrnafr to Shri S. C. Anand )

SI~RI K. DAMODARAN SHRI M. K. KILAM ( Ahrnafe )

Bharat Steel Tubes Ltd, New Delhi

Oil and Natural Gas Commission, Dehra Dun

( Conh’nued on page 78 )

fndian Standard SPECIFICATION FOR LINE PIPE

( Second Revision )

0. FOREWORD

0.1 This Indian Standard ( Second Revision ) was adopted by the Indian Standards Institution on 30 August 1982, after the draft finalized by the Steel Tubes, Pipes and Fittings Sectional Committee had been approved by the Structural and Metals Division Council.

0.2 This standard was first published in 1961 and its first revision was issued in 1971. While reviewing this standard the Committee felt necessary to issue a further revision incorporating the following:

Extensive changes to bring it in line with the current practices;

Amendment No. 1 issued to IS : 1978-1971*;

Revised grades to read as YSt 170, YSt 210 and YSt 240 in place of grades YSt 18, YSt 21 and YSt 25;

Procedure for repair of weld seam of ERW and induction welded pipes; and

Some guidelines in Appendix A for ordering line-pipes.

0.3 In the preparation of the standard assistance has been derived from the following publications:

API 5L 1980 Specification for line pipe. American Petroleum Institute.

ASTM A 53-1980 Specification for welded and seamless steel pipes. American Society for Testing and Materials.

0.4 Gas metal arc welded process which is also in vogue in other countries has not been included in this revision but would be considered for inclusion after sufficient experience is gained with the use of this process within the country.

0.5 This standard contains clauses 7.3, 7.5.1.2, 7.5.4, 8.3.1, 8.7 (b), E 9.1 and 13.1 which call for agreement between the purchaser and the 1 manufacturer.

*Specification for line pipe (jrst rctiion).

3

z e ~-___

L__,_.______ ____._ ..__.____._____ _.__

IS : 1978 - lYg2

0.6 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS : 2-1980%. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

1. SCOPE

1.1 This standard covers seamless and welded line pipes. It includes standard weight ( Std) and extra strong threaded pipe ( XS ) and standard weight plain end, regular weight plain end, special plain end, extra strong plain and double extra strong plain end pipe ( XXS ). The purpose of this specification is to provide standards for pipe suitable for use in conveying gas, water and oil in both the oil and natural gas industries.

2. TJZRMINOLOGY

2.0 For the purpose of this standard, the following definitions shall apply.

a.1 Seamless Pipe - Seamless pipe is defined as wrought steel tubular product made without a welding seam, manufactured by hot working of steel or, if necessary, by cold finishing, the hot-worked product to produce the desired shape, dimensions and properties.

2.2 Electric Welded Pipe - Electric welded pipe is defined as manufacturing a pipe with one longitudinal seam formed by electric resistance welding or electric induction welding without the addition of extraneous metal. The weld seam of these pipes in Grade YSt 240. shall be heat-treated after welding to a minimum temperature of 538°C or processed in such a manner that no untempered martensite remains.

2.3 Butt Welded Pipe ( Grade YSt 170 only ) - Butt welded pipe ( including continuous weld process) is defined as manufacturing a pipe having one longitudinal seam formed by mechanical pressure to make the welded junction, the strip being furnace heated to the welding temperature prior to welding.

2.4 Submerged Are Welding Pipe ( Grades YSt 210 and YSt 240 only ) - Submerged arc welded pipe is defined as manufacturing a pipe having one longitudinal eeam formed by automatic submerged arc welding using at Ieast two weld passes, one of which shall be on the inside of the pipe and the other on the outside.

End welding of longitudinal seams of submerged arc welded pipe, if not done by automatic submerged arc welding, shall be done by a procedure and welder qualified in accordance with Appendix A.

*Rules for rounding off numerical valuu ( revircd).

4

IS : 1978 - 1982

2.5 Double Seam Welded Pipe (Applicable to Grades YSt 210 and YSt 240 in Sizes Larger than 914 mm OD ) - Double seam pipe is defined as pipe having two longitudinal seams formed by the submerged arc welding process defined in 2.4. The location of the seams shall be approximately 180° apart. All requirements specified herein for submerged arc welded pipe shall be applicable to double seam welded pipe. All weld tests shall be performed after forming and welding.

3. PROCESS OF MANUFACTURE

3.1 Process of manufacture shall be one of those defined in 2.

3.2 Heat Treatment - Pipes furnished to this specification may be as rolled, normalized and tempered, sub-critically stress relieved or sub-critically age hardened.

4. SUPPLY OF MATERIAL

4.1 General requirements relating to the supply of line pipes shall be as given in IS : 1387-1967’:.

4.2 The steel used for the manufacture of pipes shall be made by open hearth, electric furnace, basic oxygen or a combination of these processes. In case any other process is employed by the manufacturer, prior approval of the purchaser should be obtained.

5. GRADES

5.1 Line pipes shall be of the following types and grades:

Type of Pipe Grade Designation

Seamless, electric welded YSt 170, Yst 210, YSt 240

Submerged arc welded YSt 210,YSt 240

Butt welded YSt 170

6. CHEMICAL REQUIREMENTS

6.0 Composition of pipe furnished to this specification shall conform to the chemical requirements as specified in 6.1 for the grade ordered.

‘General requirements for the supply of metallurgical materials (@ rsubion).

5

IS : 1978 - 1982

6.1 Laddle Analysis - The laddle analysis of the steel for different grades should conform to the following:

Grade Lrt&ile Analysis, Percent __-__----__~-I--_-_ ----7

Carbon Manganese Sulphur Phosphorus rc_h_-7

Max Min Max Max %G--- MlZX

YSt 170 Class I O-21 0.30 O-60 0.06 - 0.045

YSt 170 Class11 Q21 0.30 0.60 O-06 @045 0080

Yst 210 0.22 - 0.90 0.05 - 0.04

Yst 240 0.27 - 1.15 0.05 - 0.04

hOTB -Claw ( II ) steel is rc-phosphorized and is beneficial for threading operations.

6.1.1 When requested by the purchaser, the manufacturer shall furnish a report for grades YSt 210 and YSt 240 pipe giving the laddle analysis of each heat of steel. For grades YSt 170 pipe, the manufacturer may certify that the material furnished has been analysed and meets the chemical requirements of this specification.

6.2 Product Analysis - When so specified by the purchaser, the manufacturer shall furnish a report on product analysis for finished nipc of 60.3 mm outside diameter and larger. Two samples shall be analysed for product analysis; one from each of two lengths of pipe from each lot of 400 lengths or less of each size from 60.3 to 141.3 mm outside diameter, one from each of two lengths from each lot of 200 lengths or less of each size from 168.3 mm to 323.8 mm outside diameter; and one from, each two lengths from each lot of 100 lengths or less of each size of 355.6 mm outside diameter and larger. For multiple length pipe, a lengthshall be considered as all of the sections cut from a particular multiple length. The samples shall be taken as follows:

a) Seamless Pipe - At the option of the manufacturer, cuttings or drillings for product analysis shall be taken. either from tensile test specimens or from the pipe at severa pomts around the finished pipe. If drillings are used, the minimum drill size shall be 13 mm and drillings shall be taken by drilling all the way through the pipe wall.

b) Welded Pipe - At the option of the manufacturer, cuttings or drillings for product analysis shah be taken from the finished pipe, plate, skelp, tensile test specimens or flattening test specimens. The location of the samples shall be a minimum of 90” from the weld. Samples shall be taken in such a manner as to represent the total wall thickness. The minimum drill size shall be 13 mm.

6 E

IS:l978-1982

The composition so determined shall conform to the laddle analysis limits, within the following permissible variations for product analysis:

Carbon Percent:

Seamless pipe + 0.03

Welded pipe + 0.04

Manganese, percent * 0.05

Phosphorus, percent rt: 0.01

Sulphur, percent + 0.01

6.2.1 Re-tests- If the product analysis of both the lengths of pipe representing the lot fail to conform to the specified requirements, at the manufacturer’s option, either the lot shall stand rejected or all the remaining lengths in the lot shall be tested individually for conformance to .the specified requirements. If only one of the two samples fails at the manufacturer’s option, either the lot shall stand rejected or two re-test analysis shall be made on two additional lengths from the same lot, If both re-test analysis conform to the requirements, the lot shall be accepted except for the length represented by the initial analysis which failed. If one or both of the re- ,test analysis fail, at the manufacturer’s option, the entire lot shall be ,’ rejected or each of the remaining lengths shall be tested individtlally. In the individual testing of the remaining lengths in any lot, analysis for on13 the rejecting element or elements need be determined. Samples for re-test analysis shall be taken in the same manner as specified for producl analysi: samples.

6.3 Mill Control Product Analysis - A product analysis shall be made by the manufacturer as a mill control of each heat of steel used for the pro- Jxtion of pipe under this specification. A record of such analysis shall be available to the purchaser.

6.4 Chemical Analvsis Procedure - For the above chemical reauirements, $e steel shall be analysed in accordance with IS : 228* and iis

parts or the other procedures agreed upon between the purchaser manufacturer.

relevant and the

7. DIMENSIONS AND WEIGHT

7.0 During manufacturing, line pipes shall conform to the dimensions and weights given below:

*Methods for chemical analysis of steels.

7

IS : 1978 - 1982

7.1 Dimensions and Weights - Dimensions,and weights of line pipes shall conform to the requirement specified in Tables 1 and 2.

NOTE -The plain end weight, Wpe, for such pipes shall be calculated using the following formula:

Wjr=0*02466(D--t)t

where

w’r = Weight of plain end pipe in kg/m, D = Outside diameter in mm, and t = Wall thickness in mm.

7.1.1 Wall Thickness - Each length of pipe shall be measured for conformance to wall thickness requirements. The wall thickness at any points shall be within the tolerance specified in 7.5.2 except that for welded pipe, the weld area shall not be limited by the plus tolerance. Wail thickness measurements shall be made with a gauge fitted with contact pins of circular cross-section of 6.35 mm diameter. The end of rhe ‘pin contacting the inside surface of the pipe shall be rounded to a radius less than internal diameter of the pipe. The end of the pin coritacting the outside surface of the pipe shall be either flat or rounded to a radius of not less than 38 mm.

7.1.2 Weight - Each length of pipe of 141.3 mm outside diameter and larger, shall be weighed separately and the carload weights determined. Length of pipe of 1143 mm of outside diameter and less, shall be weighed either individully or in convenient lots, at the option of’ the manufacturer and the carload weights determined. Threaded and coupled pipe shall be weighed with the couplings screwed on, but without thread protectors except for carload weighings, for which proper allowance shall be made for the weights of thread protectors. The weights so determined shall conform to the specified weights for plain end or to the calculated weights for threaded and coupled pipe, within the tolerances specified in 7.5.3.

NOTE -Calculated weights for threaded and coupled pipe shall be determined as follows:

wL= (WjCX t) +Cw

where

WL - Calculated weight of a threaded pipe in kg. Wbc = Weight of plain end pipe in kg/m _

L = The length of pipe measured to the outer face of the coupling in metres.

& P Weight gain or loss due to end finishing in kg. equals to zero.

For plain end pipe 6”

7.2 Straightness - Pipes of less than 114.3 mm outside diameter shall be reasonably straight. The pipe of 114.3 mm outside diameter and more shall be random checked for straightness and deviation from a straight line shall not exceed 0.2% of the length. Measurements may be made by using a taut string or wire from end to end along the side of the pipes and measur- ing the greatest deviation.

8

IS :1978-1982

TABLE 1 DIMENSIONS, WEIGHTS AND TEST PRESSURES OF STANDARD-WEIGHT THRRADED LINE PIPE

(Clauses 7.1, 8.1 nnd 11.52’)

OUTSIDE WALL ~N~IDB

DIA- THICK- DIA-

YEntBR NESS METER

D t d

(1) (2) (33

mm mm mm

6 8

f z 20

10.3 13.7 17.1 21.3 26.7

1.7 2.2 2.3

22:;

33.4 42.2

. 48.3 60.3 73.0

80

1:: 125 150

88.9 5‘5 77.9 101.6 5’7 90.2 11*3 6.0 102.3 141.3 6.6 128.1 168.3 7.1 154.1

200 200 250 250 250

219.1 219.1

;:F: 273.0

;:2”

;:;

9.3

300 323.8 8.4 300 323.8 9’5 350 355.6 9.5 400 406.4 9’5 450 457.0 9.5 500 508.0 9.5

CALCULATED TEST PRESSIJR~, WEIGHT A4in

F---h--- _ ~____h___--_~

‘t’lain *Threads &ode End and YSt 170 WPe Coupling

C-1) (5) (7)

mm kg/m

(6)

kg 100 ki’a

6.9 0.36 0.09 48 9.3 0.62 0.09 48

12.5 0.84 ua 4% 15.7 1.28 0.09 48 20.9 1.70 0.09 48

26.6 2.52 0’09 35.0 3.43 0’27 40.9 407 0.1% 52.5 5.42 0.54 62.6 8.69 0.82

Il.31 13’i8 16.02 21.92 28”‘2 L

36.61 42.65 46’51 51.03 60.50

5.82 69 1.45 83 2’00 83 2.54 - 3.27 -

205.1 202.7 258.9 257.5 254.5

6.72 6.36 9.01 8.72 7.95

307.1 304.9

:z:

::9”:0”

65.35 73*65 81.08 92.98

10484 116.7%

14.80

z’: 13.62 16.16 19’07

- - - - -

- . -._ - - - -

Grade --Grade YSl:! 10 YSt ‘240

*Weight gain due’ try end finishing (~6 7.1.2 ).

100 kpa

48 48 4% 4% ,:i;

48 76 76 76 76

76 90 90

;8

1::

;“s 99

IS : 1978 - 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TE E?

PRESSURES OF PLAIN-END LINE PIP

(Clauses 7.1, 8.1 and 11.5.2) ,’

NOM-

NAL

SIZE

f

8” 10 10

E 15

S8 20

25

2255

50

NATlON

(2)

Std XS

Std XS

Std XS

Std

CsiS

Sld

iii&

Std XS XXS

Std

%

Std XS XXS

Std

OUT- PLAIN WALL SIDE END Trmxc- DIA- WEKUiT

YwrER

D

(3) (4)

mm kg/m

10.3 0.36 10.3 0.47

13.7 0.62 13.7 0.79

-17.1 17.1

0.84 1.10

21.3 1.28 21.3 1.61 21.3 2.55

26.7 1.70 26.7 2.19 26.7 3.64

33.4 2.52 33.4 3.2 1 33.4 5.45

iz 42.2

3.43 451 7.77

48.3 407 48.3 5.43 48.3 9.58

60.3 3.01 60.3 3.97 60.3 4.51 60.3 5.03 60.3 5.42 60.3 6.07 60.3 6.57

INSIDE TEST PRLSSURE, Min DIA- ~_-_----h-_---~

METER Grade Grade Grade d YSt 210 Yfii 240 Yst

r-_h-_ r__*___ 170 Stand- Alter- Stand- Alter- Stand-

ard

(6)

mm

(7)

100 kPa

6.9 48 5.5 59

;:; 48 59

:x::

15.7 13.9 6.3

48

ii

20.9 18.9 11.1

48

2;

26.6 48 f4.4 59 15.2 69

35.0 83 32.4 124 22.8 152

40.9 83 38.1 124 27.9 152

56.1 54-7 53.9 53’1 526 51-5 5o.7

a7 - -

1Sr . 172

172

nate

(8)

100 kPa

- -

- -

- -

- - -

- - -

- - -

- -

-

- -

- - - -

ard nate

(9) (10)

100 100 kPa kPa

48 - 59 -

48 - 59- -

48

iz

zz 69

48

2;

90 131 158

1:: 158

101 - -

172 172 172

- - -

- - -

- - -

- - -

- - -

- - - - - - -

( Continued )

10

Is : 1978: 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TilST PRESSURES OF PLAWEND LINE PIPE - Cod

(1)

mm

50

50

65 Std

f :

80

80 Std

Dasra- OUT- PLAIN WALL NATION SIDE END THICK-

(2) (3) (4)

mm kg/m

XS

xxs

60.3 7,43 60’3 8.51 60.3 9.31 60.3 13.47

73.0 3.67 73.0 4.85 73.0 5.51 73.0 6.16 73.0 6.81 73.0 7.44 73.0 8.07

73.0 8.69 73.0 9.16 73.0 10.51 73.0 11.39 73.0 20.37

88.9 88.9

:::; 88.9 88.9 88.9

450 5.95 6.76 7.57 8.37 9.17 9.95

88.9 11.31 88.9 13.02 88.9 14.23 88.9 15.24 88.9 27.63

INSIDE TEST PREIURE, Min DIA- ~-_-_-*-----__~

METaR Grade Grade Grade d Yst 210 YSt 240 YSt

r__h--_ _---- 170 Stand- Alter- .Stand- Alter- Stand-

ard

(7)

100

nate

(81

100 kPa

ard nate ard

(6)

mm kPa

49.3 172 47.5 172 46.1 172 38.1 172

68.8 67.4 66.6 65.8 65.0 64.2 63.4

71 - -

136 150 163

62.6 172 62.0 172 60.2 172 59.0 172 45.0 172

84.7 83.3 82.5 81.7 80.9 80’1 79.3

59

89

112 123 134

77.9 154 76.1 172 74.7 172 73.7 172 58.5 172

-

-

- - - - - - -

- - - - -

- - - -

- - - - -

(9)

100 kPa

172 172 172 172

83 - -

158 172 172

I72 172 172 172 172

68

104

130 143 156

172 172 172 172 172

(10)

100 kPa

- - - -

- - -

-

- - - - -

- - - - - - -

- - - - -

(11)

100 kPa

90

zi: 96

41 55 69 69 69 69 69

69 76

El 96

41

2; 69 69 69 69

69 -

90 -

( Continued )

1.1

IS : 1978 - 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSURE OF PLAIN-END LINE PIPE - Contd

NOMI- NAL

SIZS

(1)

mm

90

90

90

100

100

100

100

DESK& OUT- PLAIN WALL INSIDE TisT .PRBSSVRE, Min NATIOX SIDE END THICK- DIA- p ------- 1

&A- WEIGHT NESS METER Grade YSt 240 Grade t d Yst 210 Grade YSt

r_-h_y #--_h-_-) 170 Stand- Alter- Stand- Alter- Stand-

(2) (31

mm k/m

101.6 101% 101.6 101.6 101.6 101.6 101.6 101.6

Std 101.6 101.6 101.6

XS lo!.6

114.3 114.3 114.3 114.3 114.3 114.3 114.3 114.3 114.3

5.15 h2 7.76 8.70 9.63

10.55 11.46 13.48 13.48 1 s.02 16.55 18.68

5.81 7.70 a.77 9.83

10.88 ll*!x2 12.96 13.99 15.01

Std 114.3 16.02 114.3 17.03 114.3 18.77 114.3 20.73

xs 114.3 22.42 114.3 28.25 114.3 33.56

XXS 1143 40.99

(4)

ard

(5) (6) (7)

100 mm mm kPa

2.1 97.4 51 2.8 96.0 68 3.2 95.2 78 3.6 94.4 88 4.0 93.6 98 4.4 92.8 108: 4.8 92.0 117 5.7 9O.2 139 5.7 90.2 -_ 6.4 88.8 156 7.1 87.4 174 8,1 85.4 193

2.1 110.1 46 2-a 108.7 61 3.2 107.9 70 3.6 107.1 78 4.0 106.3 87 4.4 105.5 96 4.8 1047 104 5.2 103.9 113 5.6 103.1 122

6.0 102.3 130 6.4 101.5 139 7.1 lOO*i 154 7.9 98.5 172 8.6 97.1 187

11.1 92.1 193 13.5 87.3 193 17.1 8O.l 193

nate

(8)

100 kPa

- - - - - - - - - - - -

- -_ - - - - - - -

- - - - - - - -

ard

(9)

100 kPa

60 80 91

102 114 125 137 162 -

182 -193 193

53 71 81 91

101 111 121 132 142

152 162 180 193 193 193 193 193

nate ard

(10) (11)

100 100 kPa kPa

- - - - - - - - - - - -

- - - - - - - - -

-

- - - - - -

-

41 -

55 -

69 83 -

83

-

117

- -

155 -

69 -

83 -

83

83 - - -

117

-

( Conlinwd )

12

IS : 1978 - 1982

DESIO- OUT- PLAIN WALL INSIDE NATION SIDE

TEST PRESSURE,M~~ END THICK_ DIA- -_--_-----_h--______,

DIA. W~OHT NLSS F.&TER Grade Grad c METER WPe I d YSt 210 YSt 240

D #-_h_-T p-_*--y Stand- Alter- Stand- Altcr-

(1)

mm

(4)

kg/m

(5) (6)

125 141.3 7.21 2.1 137.1 141.3 IO.90 3.2 1349

141.3 13.94 4.0 133.3 141.3 16.16 4.8 131.7 141.3 18.74 5.6 130.1

141.3 21.92 6’6 128.1

1.41.3 23.50 7.1 127.1 141.3 25.99 7.9 125.5 141.3 28.45 8.7 123.9

125 X% 141.3 30.88 9.5 122.3 141.3 40.28 12’7 115.9 141.3 49.17 15’9 109.5

125 zxs 141.3 57.56 19.1 103’1

150 168.3 a.61 2.1 164.1

168.3 11.43 2.8 162.7

168’3 13.03 3.2 161.9

168.3 1462 3’6 161.1

168.3 16.21 4.0 160.3

168.3 17.78 4.4 159.5

168.3 19.35 4.8 158.7

168.3 20.91 5.2 158.9

168.3 22.47 5.6 157.1

168.3 25.55 6.4 155.5

168.3 28.22 7’1 154’1

168.3 31.15 7.9 152’5

168.3 3424 8.7 150.9

TABLE 2 DIM&NSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END LINE PIPE - Cod

ard nate ard

(71 (8) (9)

IO0 100 100 kPa kPa kPa

37 - 43

56 - 65

70 - 82

84 - 98

98 - 115

116 - 135

125 - 145

139 - 162

153 - 178

167 - 193

‘193 - 193

193 - 193

193 - 193

31 39 36

41 52 48

47 59 55

53 66 62

59 74 76

65 81 74

71 89 81

77 96 89

83 103 96

94 118 110

105 131 122

117 146 136

128 161 149

nate

ilO)

100 kPa

-

-

-

-

-

-

-

-

-

-

-

-

_-

45

60

69

77

86

95

- 103

112

120

137

1.53

170

187

Grade ’ YSt 170

Stand- ard

(11)

100 kPa

-

-

-

-

-

-

-

-_

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

_-

-

13

( Continued )

IS :1978-1982

TABLE 2 DIMENSIONS. WEIGHTS AND TEST PRESWRES OE PLAIN-END

(1)

mm

150

150

200

200

200

250

hSIG-

RATION

(2)

Xs

Xxs’

X

Xxs

19BTER

D

(3)

mm

168m3168*316893168-316893168*3168~3168*3

219”1219*1219-1219*1219-1219-1219”121!?’1~]g’~219-1219”121991219’1219-1219-1~~g’~219-1219’1

— -*LiNE PIPE— Cmtd

NoMI- OUmmlz PLAXNHAL ~lA- ENDsrzE

-— —A —— —

273*1273-1273-1

A27 “]2 “1273*I27391273ml27391

~EIGHT

W$e

(4)

kg/m

37*2O42*6748*7354*3159-7667-6970=2779*O6

17”0421 “2225*3729*4833”5736-6141”144296545*1$49”1056Q9464.6472*2279*6790-6294-20

100’84107979

26m5431”7636-9452°0946”5751”0356-7260°5071”72

WALL INSIDE TESTPREWRB, MhTHmK- ~lA. ~———.———~ ——. ———

Nms METER Grade Gradet d Yst 210 Yst 240

r---*”---Stand- -

(5)

mm

9“511”012=714’315”918*319”121”9

3.24“04“85*66*47“07“98*28“79“.5

119112”714”315”918*319”120*622”2

4“04.85*66*47“17*88979’3

11“1-

(6)

mm

149”3146-3142-9139”7136*5131”7130”1124-5

212*7211”1209-520799206-3205-1203m3202-720147200”1196*9193”7190=5187*3182-5180-9177”9174”7

265*1263-5261-9260-3258*9257m5g55”7254”5250-9

ard

(7)

100kPa

140162187I93193193193193

364554637379909399

108126144162180193193193193

3644515865717985

101

natc

(8)

~~~kPa

177193193193193193193193

455768799199

112116123135157180193193193193193193

45556473818999

106126

\tand-nrd

(9)

I00kPa

163189193193193193193193

425363748492

I04108115

’125147168189193193193193193

4251596875839298

118

Alter-’nate

(lo)

100kPa

193193193193193193193193

53667992

106115I30135144157183193193193193193193193

5364748594

103115123147

( Contirmed)

14

IS : 1978 - 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END LINE PIPE - Co&f

Nom- DESlO- OUTSIDIZ PLAIN WALL ‘INSIDE

NAL NATION DIA- END THICK- METER WEIGHT

D WPS

NESS

t

(5)

DIA- METER

d

(1) (2) (3)

mm mm

xs 273.1 81.55 273.1 91.26 273.1 100.85 273.1 11499 273.1 1 I: 9.64

250

300

273-l 273.1 273.1 273.1

323.9 323.9 323.9 323’9 323.9 323.9 323.9 323-9 323.9 323.9

300 xs :;::z 323.9 323.9 323.9 323.9 323.9 323.9 323-9 323.9 323.9

350 355’6 355.6 355.6 355.6 355.6 355.6 355.6

(4)

k/m

128.27 137.36 146.32 155.15

34.67 37.17 43.96 50.11 55.47 61.56 65.35 67.62 73.65 85.62 97.46

109.18 120.76 132.23 143.56 i 54.08 165.17 176.13 186.97 197.68 208.27

41.52 44.93 55.11 61.02 67.74 74.42 81.08

mm

12.7 14.3 15.9 18’3 19.1

20.6 22.2 23.8 25.4

4.4 4.8 5.6

7”:;

7.9

;:;

9.5 II.1 12.7 14.3 15.9 17.5 19.1 20.6 22.2 23.8 25,4 27.0 28.6

4.8 5.2

;:;

;:;

9.5

(6)

mm

247.7 244.5 241.3 236.5 2349

231.9 228.7 225.5 222.3

315-I 314.3 312.7 311.1 309.7 308.1 307.1 306.5 304.9 301.7 298.5 295.3 292.1 288.9 285.7 282.7 279.5 276.3 273.1 269.9 266.7

346.0 345.2 342.8 341.4 339.8 338.2 336.6

TIMT PRESSURE, Min #----- -*--__---~

Grade Grade YSt 210 YSt 240

______~ r-__*‘_-_ -Stand- Alter- Stand- Altcr-

ard nate ard nate

(7)

100 kPa

116 130 145 166 174

187 193 193 I93

34

:;

:9 61

:;

Ii:

1;: 122 134 146 158 170 183 193 193 193

z:

ii

2: 66

(8)

100 kPa

144 163 181 193 193

193 193 193 193

42 46 54 61 68

: 83 91

106 122 137 152 168 183 193 193 193 193 193 193

42 45

z: 69

ii

(9) (10)

100 100 kPa kPa

134 151 168 193 193

193 193 193 193

39 43 50

23’ 71 75

i:

1;: 128 142 156 171 184 193 193 193 193 193

:; 52

i: 71 77

168 189 193 193 193

193 193 193 193

49 54

K 79 88 94 97

106 124 142 160 177 193 193 193 193 193 193 193 193

49

:: 72 80

i; ( Continued )

15

IS : 197X - 1982

TABLE 2 DIMF.NSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END LINE PlIPE - Cm&

i’iOMI- Desm- OUlSlDB PLAIN WALL NAL NATION SIZE

(1) (2)

400

450

DIA- END THICX-

(3) (4)

Imn kg/m

355% 94.30 355.6 107.39 355.6 120.3G 355% 133.19 355.6 145.91 355.6 158.49 355% 170.18 355.6 182.52 355.6 194.74 355.6 206.83 355-6 218.79 355.6 230.63

406’4 47.54 406’4 51.45 406.4 55.35 406.4 63.13 406-4 69.91 406’4 77.63 406’4 85.32 406.4 92.98 406.4 1 OR-20 406’4 123.30 4C6.4 138.27 406.4 153.11 406.4 167.83 406’4 182.42 406’4 195.98 4GG.4 210.33 406.4 224.55 406.4 238.64

406.4 “52.61 406.4 266.45 406.4, so.17 406’4 293.76

457’0 53.57 457.0 62.34 457’0 71.12 457.0 78.77

NESS

t

(5)

mm

11’1 12.7 14.3 15.9 17.5 19.1 20.6 22.2 23.8 25.4 27.0 28%

4.8

;:‘6

6.4

;:;

8.7 9.5

11.1 12’7 14.3 15.9 17.5 19.1 20.G 22.2 23.8 25-4

27-O 28.6 30.2 3!*3

4.8 5.6

;;

INSIDLX TEST PRE~IURE, Min 1)1*_ ~~~~~h_~ ----_ ~ METER Grade Grade

d YSt 210 YSt 240 r-- A_--, ,--.~----, Stand-

ard Alter-

nate . ‘Stand-

ard Alter- ’ natc

(6)

mm

333.4 330.2 327.0 323.8 320.6 317.4 314-4 311.2 308.0 304.8 301.6 298.4

396.8 396.0 395.2 393.6 392.2 390.6 389-O 387.4 384.2 381.0 377.8 374.6 371.4 3G8.2 ?65.2 3fZ.O 358.8 355.6

352,4 349.2 346.0 342.8

447.4 445.8 444.2 442.8

(7)

100 kPa

z 100 111 122 133 144 155 i66 177 189 193

29 32.

3”: 43 48 53

2::

:;

1:; 117 126 136 145 155

165 175 185 193

26 30 35 39

(8)

100 kPa

97 111 125 139 153 167 180 193 193 193 193 193

37

:: 49

z 66

;:

10”: 121 134 146 157 170 182 193

193 193 193 193 33 38 43 48

(9) (10)

100 100 KPa kPa

1:: 116 129 142 155 168 181 193 193 193 193

34 37

:: 51

z: 68

;: 102 113 125 136 147 158 169 181

192 193 193 193

30

2: 45

113 129 145 162 178 193 193 193 193

f9”3” 193

:z

:; 63

:: 85 99

113 127 141 156 170 183 193 193 193

193 193 193 193

38 44 51 56

IS : 1978 - 1982

TABLE 2 DIMENSIONS, WEIOHTS’ AND TEST PRESSURES OF PLAIN-END LINE PIPE - Conld

NOMI- Dzam- &J'IS~DE PLAIN

NAl. NAllON DIA- END SIZE METER WEIGHT

D WPC

Cl) (2) (3)

mm mm

45710 457.0 457.0 457.0 457.0 457’0 457.0 457.0 457.0 457’0 457.0 457.0 457.0 457’0 457.0 457.0 457.0

500 508-O 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 500’0 508.0 508.0 508.0 508.0 508.0 508.0 508.0 508.0

(4)

kg/m 87.49 96.18

104.84

::z 156.11 172.95 189’67 206.25 221.69 238.03 254.25 270.34 286.30 302.14 317.85 333.44

69.38 79.16 87.70 97’43

107.12 116.78 136.01 155’12 17410 192.95 211.68 230.27 247.60 265’95 284’18 302.28

%P 355.83 373.43 389.8 1 407.17

WALL INSIDE TIUCK- DIA-

NESS METER

t d

(5)

mm

(‘5)

mm

7.9 441.2 8.7 439.6 9.5 438.0

11’1 434.8 12.7 431.6 143 428.4 15.9 425.2 17.5 422.0 19.1 418.8 20.6 415.8 22.2 412.6 23.8 409.4 25.4 406.2 27.0 403.0 28.6 399.8 30.2 396.6 31.8 393.4

5.6 6.4 7.1 7.9 8.7

1;:;

12’7 14.3 15.9 17.5 19.1 20.6 22.2 23-8 25.4 27.0 28% 30.2 31.8 33.3 34.9

496.8 495.2 493.8 492.2 490.6 489.0 485.8 482% 479.4 47G.2 473.0 469.8 466.8 463.6 460.4 457.2 454.0 450.8 447.6 44444 441.4 438.2

TEIJT PRESNJRE, Min r--__-_h____~

Grade YSt 210

,-_A-_,

Grade YSt 240

_-- h-_, ‘Stand- Alter-’ Stand- Alter- ’

ard nate ard nate

(7) (8) (9) (10)

100 100 100 100 kPa kPa kPa kPa

43 47

d; 69

::

1:: 112 121 129 138 147 155 164 173

54

5:

;;

97 108 119 130 140 151 162 173 183 193 193 193

50

5;

:: 90

101 111 121 130 140 151 161 171 181 191 193

62 69 75 8(:

100 113 126 138 151 163 176 188 i93 193 193 193 193

27

;:

93” 46 54 62 70 78 86

1:: 109 116 124 132

:z I55 163 171

34

:: 4% 53 5%

:,” 87

1:: 117 126 136 14.5 155 165 175 185 190 190 190

32

::

5;

:“; 72 81 91

100 109 117 126 135 14.5 154 163 I 72 181 190 190

40 46

2: 62 68 79

1:; 113 125 136 147 158 169 181 190 190 190 190 190 190

17

IS : l!m - 198

-TABLE 2 DIMENSIONS, WBI~GH~” PRESSURES OF PLAIN&ND

NOM- DESIG- OUTMDE PLAIN WALL

NAL

SIZE

NATION DIA- METER

D

END THICK. WEIGYT NESS

PV$h L

INSIDE

DIA- MBTBP

d

(1) (2) (3) (4) (5) (6)

nun

550

600

559.0 559-o 559.0 559.0 559-o 559.0 559.0 559.0 559’0 559.0 559-o 559.0 559.0 559-o 559.0 559.0 559’0 559.0 559.0 559-o 559-o 559.0 559.0 5590

610-O 610’0 610.0 610-O 610.0 610.0 610.0 610-O 610-O 610.0 610-O 610.0 610.0 610+0 610*0

k/m

76.42 87.21 96.63

107.36 118.06 128.73 149.97 171.09 192.08 212.95 233.68 254.30 273.51 293.87 314-l 1 334-23 354-22 374.08 393.81 413.42 431.69 451.06 470.30 489.41

95.26 105~56 117.30 129-00 140.68 163.93 i87-06 210.07 232.94 255.69 278.32 299.41 321.79

z-:5 .

mm

5.6 6.4

;:;

98:;

11-l 12.7 14.3 15.9 17.5 19.1 20.6 22.2 23.8 25.4 27.0 28.6 30.2 31.8 33.3 34.9 36.5 38.1

6.4 7-l

87:;

9.5 11-l 12.7 14.3 15.9 17.5 19.1 20.6 22.2 23.8 25.4

547.8 546.2 x+8 543.2 541.6 540-o 536.8 533.6 530.4 527.2 5240 520.7 517.8 5146 511-4 508’2 505.0 501.8 49S.6 495.4 492.4 489.2 486-O 482.8

597.2 595*8 5942 592.6 591-o 587.8 584-6 581’4 578.2 575-o 571.8 568.8 565.6 562.4 559.2

TEST PRBMUIIE, Min ~_____h_._,__

Grade Yst 210

r__*__$ Stand- Alter-

Grade - YSt 240

--L-7 Stand-

ard Alter- nate

(7) (8) (9) (10)

100 100 100 100 kPa kPa kPa kPa

z: 32

:; 42 49

2:

::

:; 99

106 113 120 127 134 141

:g 162 169

31

z;

:: 53 62

::

f : 106 114 123 132 141 150 159

172 172 172 172 172

29 33 37 41

:;

2:

;; 91

lo”‘: 115 123 131 140 148 156 165 172 172 172 172

36

z

z: 61

:;

1:: 113 124 133 144 154 164 172 172 172 172 172 172 172 172

33

::

z 57 65

:;

:; 105 113 121 129

38

:; 52

z

:z

1;: 113 122 13? 141 151

nate

18

IS : 197s - 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END LINE PIPE - Conid

Now- Dksro- OUTSIDE PLAIN NAL NATION DIh-

SIZE METER D

END WEIGIIT

WPC

(1) (2) (3)

mm mm

610.0 610.0 610.0 610.0 610.0 610.0 610.0 610.0 610.0

kg/m mm

388.17 27.0 556’0 110 137 128 159 410.05 28.G 552.8 116 14G 13G 159 43 1.80 30.2 549% 123 154 143 159 453.42 31.8 546.4 129 159 1 5 1 159 473.57 33.3 543.4 136 159 158 159 494.95 34.9 540.2 142 159 159 159 516.20 3F.5 537.0 149 159 159 159 537.33 38.1 533.8 155 159 159 159 558.32 39.7 530.6 159 159 1.59 159

650 660.0 103.15 660.0 114.31 660.0 127’04 660.0 139.73 660.0 152.39 660.0 177.62 660.0 202.72 660.0 227.70 660-O 252’55 660.0 277.27 660.0 301.87 660.0 324.81 660.0 34916 660.0 373-39 660.0 397’49

700 711.0 711-o 711.0 711.0 711.0 711-o 711.0 711’0 711.0 711’0 711.0 711.0 711.0 711.0

(4)

Ill.20 173:21 136.97 164. 4

3 ,191. 8 ~2 118’69 245.68 272.54 299.28

;;;:;; 377.08 403.32 429.44

WALL THICK

NESS

t

INSIDE TEST PRESSURE, Min DIA- ~~~~_~~~h~~~~~_~

METER Grade Grade d

(5) (6)

mm

;:;1

7.9 8.7 9’5

Il.1 12.7 14.3 15’9 17.5 19.1 20.6 22.2 23.8 25.4

6472 645.8 644.2 642.6 641 .O 637.8 634% 631.4 628.2 625.0 621.8 618.8 615.6 612.4 609.2

6.4 698.2 7.1 696.8 7.9 695.2 9.5 692-O

:1.1 688.8 12.7 G85.G 14.3 682.4 15.9 679.2 17.5 676.0 19’1’ 672.8 20% 669.8 22.2 666.6

‘23.8 663’4 25’4 660.2

YSt 210 YSt 240 ,-----h---7 __-h__ .Stand-

ard Altcr- natc

Stand- Altcr- ard nate

(7)

100 kPa

z;

zi 3F 42 48 54 60 6f 72

8748 90 96

(8) (9)

100 100 kPa kPa

30 33 37 41 45 52 GO 67 75 82 90

10”: 112 119

28 31

ii 52

4: 63 70

;:

z; 104 111

321”

3;’

z:

iii 7G 83 90 97

104 111

(10) 100

kPa

35 39

‘ii

iz

:: 87

1;: 113 122 130 138

33

:“o 48 56 65

if

:; 105 113 121 129

( Continued )

19

IS : 1978 - 1982

,TABLE 2 DiMENSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END

Nom- DEIIO- OUTSIDE PLAlN WALL INSIDE TEST PREESU~~, Min NAL

SIZE

(1)

NATION DIA- METER

D

(2) (3)

750

800

850

kg/m mm

762.0 119.25 762.0 132.17 162.0 14691 762.0 176.29 762.0 205.54 762.0 234.67 762.0 263.67 762.0 292.54 762.0 321.29 762.0 349.9 1 762.0 376.63 762.0 405.00 762.0 433.26 762.0 461.38 762.0 489.38 762.0 517.25 762.0 544.99 762.0 572’61

6.4 7.1 7.9

1Z 12.7 14.3 15’9 17.5 19.1 20.6 22.2 23.8 25.4 27.0 28.6 30.2 31.8

749.2 747.8 746.2 743.0 739.8 736.6 733.4 730.2 727.0 723.8 720.8 717.6 714.4 711.2 708.0 704.8 701.6 698.4

813.0 127.30 813.0 141.10 813.0 156.84 813.0 188.24 813.0 219.50 813.0 250.64 813.0 281.65 813.0 312.54 813.0 343.30 813.0 373.93 813.0 402.54 813.0 432.93 813.0 463.19 813.0 493.32 813.0 523.33 813.0 553.22 813.0 682.98 813’0 612’61

;::

7.9 9.5

11.1 12.7 14.3 15.9 17.5 19’1 20.6 22.2 23.8 254 27.0 28.6 30.2 31.8

800.2 798.8 797.2 7940 790.8 787.6 784.4 781.2 778.0 77*8 771.8 768.6 765.4 762.2 759’0 755.8 752.6 749.4

864.0 135.35 6.4 851.2 8640 150.03 7.1 8498

LINE PIPE - Conhi

END Tnmc- WElOHT NESS

WJC t

(4) (51

DIA- r----- *-v-- METER Grade

d Yst 210 __*_._y

Grade ’ YSt 24Q

--- Stand- Alter-.

(6)

mm

ard natc -Stand- Alter-’

ard nate

(7) (8) (9) (101

100 100 100 100 kPa kPa kPa kPa

ii 26

3”:

t:

:; 62 67

:‘8

ii 93 98

104

3

39

2; 58 65 71 78 84 90 97

103 110 117 !23 130

24 27

::

2 54

::

;z

:z 96

102 109 115 121

30

i:: 45 53 60 68 75 83

:; 105 113 120 128 136 143 151

;z 28

:z 45

z: 62 68

:i

iz 96

102 107 113

28 32 35 42 49

25 71

ii

;5 106 113 120 127 134 141

23 21 27 26 24 30

( Conrinurd )

20

Is : 1978 - 1982

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSURES OF PLAIN-END LINE PIPE - Contd

NOMI- DSBIG- OUTSIDE PLAIN

(1)

mm

900

950

NATlON DIA- END

METER %IGHT D WPe

(2) (3)

mm

8640 864.0 8640 864-O 8640 864.0 864.0 864.0 864.0 864.0 864.0 864.0 8640 8640 8640 864.0

kg/m 166.78 200.18 233.46 266.61 299.64 332.53 365.31 397.95 428.44 460.85 493.12 525.27 557.29 589.19 620.96 652.60

,914.o 143.24 9140 158.79 9140 176.52 914.0 211.90 914-o 247.15 914.0 282.27 9140 317.27 914.0 352’14 914.0 386.88 914-O 421.50 914.0 453.84 914.0 488.22 9140 522.47 9140 556.59 914.0 590.58 9140 62445 9140 658.19 914-o 691.81

965-O 186.46 965.0 205-l 7 965-O 223.84 965-O 242.49

(4j

WALL INsIDE TEST PREWIRE, Min THICK_ D‘A_ p-----wA-.--a.-,

NESS

t

METER Grade d YSt 210

,--1-y hand- Alter- -

nate

Grade YSt 240

#--A- Stand- Alter- ’

ard natc

(5)

mm

;:;

11.1 12.7 14.3 15.9 17.5 19.1 20.6 22.2 23.8 25.4 27.0 2&6 30.2 31.8

7::

i;:;

11.1 12.7 14.3 15.9 17.5 19.1

;x:: 23.f’ 25.4 27.0 28.6 30.2 31.8

7,3 a.7

(6)

m

“I! 848. 845.0 841.8 838.6 835.4 832.2 829.0 825.8 822-a 819.6 816.4 813.2 810.0 806.8 803% 800.4

901.2 899.8 898.2 895.0 891.8 888’6

z:; 879.0 875.8 872.8 869’6 866.4 863-Z 860.0 856.8 853.6 850.4

949.2 947.6 946.0 944.4

ard

(7) (a) (9) (10)

100 100 100 100 kPa kPa kPa kPa

26 32 37 43 48 53

:: 69

;; 85 90 96

101 106

33 40

;:

z;

:; a6

1:: 106 113 120 126 133

:9’

;;

is 39 43 48 52 56 60 65 69 73

z 86

25

if

:: 50 57

z:

;: 88

1; 107 113 119 126

20 25

;: ‘3: 27 33

24 26

::

( Continued) 6

IS:1978-1981

TfiIZ 2 D-SIONS, WIUGs;Ah&DIEt; PRESSURES OF PLAIN-END

NOM- DMIQ- OU~IDE NAL NATION DJA- SIZE YETER

D

(1) (2) (3)

mm mm

965.0 965’0 965'0

2% 965.0 965'0

EX 965-O 965.0 965-O 965.0 965.0 965.0

kg/m mm

(6)

mm

261.11 279.69 298.24 335.25 372’14 408’89 445.52 479.75 516.14 552’40 588.53

EE 696.18 731.80

11.1 942.8 11.9 941.2 12’7 939.6 14.3 936.4 15.9 933.2 17.5 930.0 19’1 926.8 20’6 923.8 22.2 920.6 23.8 917.4 25.4 9142 27.0 911.0 28.6 907.8 30.2 904.6 31.8 901.4

1 000 1016*0

: Xff:i 1016*0

: %?8 1016.0 1016.0 1 016.0 1016.0 1016*0

196.39 216.11

E::: 275.07 294.66 314.22 353.24 392.13 430.90 469.55

;:;

1z.i; 11-l 11.9 12.7 14.3 15.9 17.5 19.1

1 000*2 998.6 997.0 995.4 993.0 992.2 990.6 987.4 984.2 981.0 977.8

1000 1 016.0 505’66 20.6 974.8 1 016.0 544’06 22.2 971.6 1 016.0 582’33 23.8 968.4 1 016.0 620’48 25.4 965.2 1 016.0 658’50 27.0 962.0 1 016.0 696.39 28-6 958.8 1016.0 734.16 30.2 955.6 1 016.0 771’80 31.8 952.4

1050 1 067.0 227.05 1 067.0 247.74 1 067.0 268’40

PLAIN WALL END THICX-

WEICRT

(4)

NE88

t

(51

87

lo”.:

INSID= T-T Passwar, Min DlA- r___---_~

HETER Grade Grade d YSt 210 YSt 24a

Alter- nate

-Stand- Alter- ard nate

(9) (10) 100 100 kPa kPa

zi 41 46 51

SE 66

::

:: 92

1::

:i 48 54 60 66

:‘7

E

101 107 113 119

24

;:

:: 36 39

z 53 58

3; 34 37 39 42 45 51 57 62 68

73 79 85 90 96

102 107 113

1 049.6 1 048.0 1 046.4

25 24

3”: 2”:

29 32 35

( Continued )

22

J

IS:1978-1981

TABLE 2 DMENSIONS, WZIGH’I&/..FA..F TESES~dPRESSURES OFPLAIN-END

Nom- Dmno- Ommx PLAIN WALL INSIDE TEST PmuSu~~, Min

NIL UATXON DIA.- END THICK- DIA- .------7 NF.gs METER . Grade Grade t d YSt 210 Yst 240

#-A---b F--h- Stand- Alter- Stand- Alter- _

n8te

(1) (2) (3) (41 (5) (6)

1100 1118.0 1118.0 1 llS.0 111&O 1 II&O 111&O 111&O 111~0 111&O 1118’a 111&O 111&O 111&O 111&O 111&O 111&O 1118.0 1 118.0

1 150

mm mm

1067'0 1067.0 1 067'0 1067-O 1067'0 1067-O

: i:::: 1067.0 1067.0 1067.0 1067.0 1 067'0 1067.0 1067.0

1 16&O 116S.o 1 16&O 1 16&O 1 16&O

kg/m

%~~ 330.19 371.22 412.13 452.91

z::: 571.98 612’26 652.42

%E 772.14 811.79

237.39 25969 281.35 302.99

Et . 38921

:;z;

z::::; 59990

%% 726.41 76S.33 810.12 851.79

246.72

;iKz . 316.67 33926

mm mm

11.1 1044.8 11.9 1 043.2 12.7 1 041.6 14.3 1048.4 15.9 1 035.2 17.5 1 032.0 19.1 1 028.8 20.6 1 025.8 22.2 1 022.6 23.8 1 019.4 25.4 1016.2 27.0 1013’0 28.6 1 009.8 30.2 1 006.6 31.8 1 003.4

8.7 1100.6 9.5 1 0990

10.3 ; Og.8’ 11’1 * 11.9 1094.2 12.7 1 092’4 14.3 1 089.4 15.9 1 086.2 17.5 1083.0 19.1 1 079.8 20.6 1076.8 22.2 1 073.6 23.8 1070.4 25.4 1067.2 27.0 1064.0 2S.6 1 060.8 30.2 1057.6 31.8 10544

&7 1 150.6 9.5 1 149’0

10.3 1 147’4 11.1 1 145.8 11.9 1 144.2

. 23

IS:1978-1982

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSURES OF PLAtN-END LrmE PIPE - Conld

Nom- Dana- OIJTSIDE PLAIN WALL INSIDE TEST PRESSURE, Min XAL NATION DIA- END Tmcr- DIA- r-__--._~h.-_-~ SIZE XSTSR WElGkIT

D WP

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

mm mm kg/m

1 168.0 1 168-O 1 168,O 1 16&O 1 168’0 1 168’0 1 168’0 1 168*0 1 168-O 1 168,O 1 168.0 1 168’0 1 168.0

1 200 1219% 1219.0 1219’0 1219’0 1219.0 1 219’0

1 LOO

121’9.0 1219’0 1 219’0 1219’0 1219’0 1219’0 1219.0 1219’0 1219.0 1219.0 1219’0 1219.0

1321.0 358.55 11.1 1 298.8 1321.0 384.. 16 11.9 1 297.2 1321’0 409.74 12.7 1 29.5% 1321.0 460.79 14..3 1 292.4

361.82 406.84 451.73 496.50

~~:‘~” 627’2: 671.54 715.68 759’70 803.59 847-36 890.99

259.66 283.35 307.01 330.63 354.23 377.79 424.82 471.73 518.51 565.16 608.78 655.19 701.47 747.63 793.66 839.56 885.34 93099

1321.0 Al.72 15’9 1 289.2 1321.0 562.53 17.5 1 286.0 1321.0 G13.20 19’1 1 282.8

NESS METER Grade Grade t d YSt 210 Yst 240

---A --7 #-___A--_~ &and.

ard Alter- nate

Stand- ard

Alter- nate

mm mm

12.7 1 142.6 143 1 139.4 15.9 1 136.2 17.5 1 133.0 !9.1 1 129.8 20.6 1 126.8 22.2 1 123% 23.8 i 120.4 25.4 1 117.2 27.0 1 114.0 28.6 1 110.8 30.2 1 107% 31;s 1 1048

8.7 1201% 9.5 1 200.0

10.3 1 198.4 11-l 1 196.8 11.9 1 195.2 12’7 1 193.6 14.3 1 190.4 15’9 1 187.2 17.5 1 185.0 19.1 1 180.8 20% 1 177% 22.2 1 174.6 23.8 1 171.4 25.4 1 168.2 27.0 1 165fl 28% 1 161.8 30.2 1 158.6 31.8 1 155.4

100 100 100 100 kPa kPa kPa kPa

27 30

:“;

::. 47 51 54. 57 Gl 64 68

34 31

:: is 47 43 51 47 55 51 59 55 6’ 59 68 63 72 67 76 71 80 75 85 79

18

f ? 23 24 26 29 32

z: 42 45 48 52 55

2: ti5

22 24 26 28 30 32 36 40

r

?I 52 57 61 65 G9

5; 81

21 23 24 26

z:

:8” 42 45

5:

z”o 64 68 72 75

26 28

26 28 30 34 37 41 45

24 2G 28

2:

:;

66

::

:: 90 94

:: 35 39

2 I L

52 I b

( Continued) c

IS : 1978 -M82

TABLE 2 DIMENSIONS, WEIGHTS AND TEST PRESSWRES DE’ PLAIN-END LINE PIPE - conki

Now- Dmto- ODyAmg PIAN WAN. INSIDE NAt. NATION END THICK- DIA- SUB YBTRB

D NESS YBTER

t d

T-7 PRUSUIIE, &I Y-*F

Gde Grade YSt 210 YSt 240

A- --A---, ’ ‘Stand-

(1) (2) (3) (4) (5) (6)

1400

1 321.0 1321.0 1321.0 1321.0

: E 1321.0 1321.0

1 422.0 1 422.0 1 422.0 1 422.0 1 422.0

: :;z

: :;E

: :z: 1 422’0 1 422-O 1 422.0 1 422-O

15240 15240 15240 15240 1524.0 1524-o

: EX 1524-O 1524-O 1524.0 1 524.0 1524-O

k/m 66OfiO 711.03 761.34 811.52 861.57 91 l-50 961.30

1 010.98

mm mm

20.6 1 279.8 22’2 1 276.6 23.8 1 273.4 25.4 1270.2 27.0 1 267.0 28.6 1 263.8 30.2 1 260.6 31.8 1 257.4

386.20 413.80 441.37 49641 55 -32 i -11 660.77 711.91 766.32 820.61 87478 928.82 982.73

1036.52 1090.18

11.1 1 399.8 11.9 1 398.2 12.7 1 396.6 14.3 1 393.4 15.9 1 390.2 17.5 1 387.0 191 1383.8 20.6 1 380.8 22.2 1 377.6 23.8 1 374.4 25.4 1371.2 27.0 1 368.0 28.6 1 364.8 30.2 1 361.6 31.8 1 358.4

473-31 12.7 1 498.6 532-38 143 1495.4 591.32 15.9 1 492.2 650.13 17.5 I 489.0 708-82 191 1485.8 763.72 20.6 1482.8 822.16 22.2 1 4796 88048 23.8 1 476-4 938.67 25.4 1 473.2 996.73 27.0 1 470.0

1 OH-67 28.6 1466.8 111246 30.2 I 463.6 I 170.17 31.8 1460.4

25

IS : 1978 - 1982

TABLE 2 DIMENSIONS, W’EXIHTGHT~~ TESW&PhJWRES OF PLAIN-END -

Now- Dasto- hTSID& PLAIN WALL

NAL SZZB

(1)

mm

1600

NATION DIA- METER

D

(2) (3)

mm

16260 1 626.0 1626.0 I 626.0 1 626.0 1626.0 1 626.0 1 626.0 1626.0 1 626.0 1 626-O 1 626.0 1 626.0

(4)

kg/m 505.26 568.35 631.31 69415 756.86 815.54 87*00 940.34

1 002.56 1 06465 1 126.61 1 188’44 1250.15

THICK-

NRSS

t

(5)

mm

12.7 14.3 15.9 17-5 191 20.6 22.2 23.8 25.4 27.0 28.6 30.2 31.8

INSIDR TEST PRESWRE, M&I DIA- ___h---7

METER Grade Grade d YSt 210 YSt 240

a e-7 Stand- Alter- Stand- Alter-

ah nate ard nate

(6) (7) (81 (9) (101

E 100 100

mm kPa kPa l%

1 600.6 19 24 23 28 i 597.4 22 27 25 32 15942 24 30 28 35 1 591.0 27 33 31 39 1 587.8 29 36 34 42 1 584.8 31 39 37 46 1 581.6 34 42 39 49 1 578.4 36 45 42 53 1 575.2 39 49 45 56 1 572’0 41 52 48 60 1 568.8 44 55 51 64 1 565.6 46 58 54 6; 1 562.4 49 61 57 71

7.3 Length - Unless otherwise agreed upon between the purcbaser and the manufacturer, pipe shall be furnished in single random or double randQm lengths as specified by the purchaser. The lengths shall be within the tolerances speciffed in clause 7.5.4. When the pipe is furnished with threads and couplings the length shall be measured to the outer face of the couplings. The length of threaded and coupled pipe may be determined without the couplings screwed on provided proper allowance is made for the length of the couplings.

7 A Diameter - For threaded pipe, the outside diameter at the threaded ends shall be such that the thread length Lt and the number of full-crest threads in that length are within the dimensions and tolerances specified in IS : 3333 ( Part l )-1967* ( Inside diameters are governed by the outside diameter and weight tolerances ).

7.5 Tolerances - The tolerances ou outside diameter, wall thickness, weight and length shall conform tq the requirements specified in 7.5.1,7.5.2, 7.5.3 and 7.5.4 respectively.

Wiiensions for petroleum industry pipe threads: Part 1 Line pipe threads.

IS : 1978- 1982

7.5.1. Outside Diameter - The outside diameter tolerances shall be as follows.

7.5.1.1 Pipe body For Size Tolerance

48.3 and less + 0.40 mm - O-80 mm

m3 and above f 1 percent

For pipes of 114.3 mm outside diameter and larger, the outside diameter measurements on the body of the pipe shall be made at the mill with a diameter tape or an outside micrometer whichever is feasible on a random basis, but not less than three measurements per working shift.

7.5.I.2 Pipe ends - Plain end pipe 273 mm outside diameter and smaller, shall not be more than 0.40 mm smaller than the specified outside diameter for a distance of 100 mm from the end of the pipe and shall permit the passage over the ends, for a distance of 100 mm of a ring gauge which has a bore 1.6 mm larger than the specified outside diameter of the pipe.

Seamless plain end pipes of 323.8 mm outside diameter and larger shall be not more than 0.80 mm smaller than the specified outside diameter for a distance of 100 mm from the end ofrhe pipe. They shall permit passage of a ring gauge which has a bore of 24 mm larger than the specified outsidk diameter of the pipe over the ends for a distance of 100 mm. At the option of the manufacturer the minimum outside diameter of pipe in sizes 508.0 mm outside diameter and smaller may be measured with a diameter tape. By agreement between the manufacturer and the purchaser the tolerance on outside diameter at the ends may be applied to the inside diameter at the ends. For pipe sizes of 559 mm and larger, and for a distance of 100 mm from the ends of the pipe, the maximum outside diameter shall not be more than I percent larger than specified and the minimum outside diameter shall not be more than 1 percent smaller than specified.

7.5.2 Wall Thickness - The tolerances on the wall thickness of line pipes shall be as follows :

Trpe For Tolerance, percent

Seamless and welded 73.00 mm and smaller + 20.0 pipes - 12.5

88.9 mm OD + 18.0 - 125

Seamless pipes 101.6 mm OD and larger +_ ;;*; .

Welded pipes 101.6 mm OD to 457.2 mm OD + 15.0 inclusive

5&O mm OD and above - 12.5 + 1?5 - IO.0

7.5.3 Weight - The following weight tolerances apply to the calculated .. weights for threaded and coupled pipes and to the specified’ weights for plain end pipes.

Single Length

Standard weight, regular weight, extra strong and double extra strong pipe :

Grade YSt 210 and YSt 240 + l@O percent - 3.5 percent

Grade YSt 170 + 10.0 percent - 50 percent

Special plain end pipes - All Grades + l@O percent - 5.0 percent

Carload lots ( for Mn of 18 000 kg ) :

Grade YSt 210 & YSt 240 - 1.75 percent

Grade YSt 170 - 25 percent

NOTB -When the minus tolerance on wall thicknen L ks than 12) per t of the specified wall thickness, the maximum wall thickncas shall provide a to $ wall thickness range of 2P5 perrent of the rpecificd wall tbickncas and the maximum weight rhall be equal to 22.5 percent ininua the under-thickness tokancc.

7.5.4 The tolerance of the length of line pipes shall be as follows : TypeofPW Shortest Length M&rum Average

in Entire Shipnrent

Ly$hi&ktire

77ueadbd and Coupled : m m Single random length 4.9 5.5 Double random length 67 10.7 Rain End Pipes : Single random length 2.7 5.3 Double random length 43 10.7

&F&y to each car 104. - By agreement between the purchcr and the mamkcttuer, these tolerances

8. PIPE ENDS, WORKMANSHIP AND FINISH

8.1 pipe Puds - Pipes shall be supplied with threaded or plain end as given in Tables I and 2. Extra strong line pipes shall be furnished with plain ends, except that the ends shall + threaded and coupled if so q&i- rp;;y

& UC= zfdee The inside and outside edges of the ends of

.

28

IS :1978-1982’

8.1.1 Threaded ends shall ‘conform to the requirements specifiad in IS : 3333 (Part 1 )-1967*. One end of each length of threaded pipe shall be provided with a coupling conforming to the requirements given in 9 and the other end with thread protector. Couplings .shall be screwed on to the pipe handtight ( they may be applied powertight if so specified on purchase order ). A suitable thread compound shall be applied to cover the full surface of either coupling or pipe engaged before making up the joint. All exposed threads shall be coated with such suitable thread compound unless otherwise specified on the purchase order.

8.1.2 Unless specified otherwise, plain end pipes of sizes 60.3 mm outside diameter and more shall be furnished with the ends bevelled to an angle of 30 -$z measured from a line drawn perpendicular to the axis of the pipe end with a root face of 1.6 f O-8 mm. The end finish for pipes less than 60.3 mm outside diameter shall be as specified by the purchaser. The pipe ends shall have all burrs removed from both the inside and outside edges.

For seamless pipes’ where internal machining is required to maintain the root face tolerance, the angle of the internal taper, measured from the longitudinal axis, shall be no longer than that listed below :

Specified Wall Thickness Max Angle of Taper &g

Less than IO-6 7

10.6 to 14.1 9-s

More than 14-l to 16.9 11

.Over 16.9 mm I4

For the removal of an internal burr on welded pipe larger than 114-3 mm outside diameter, the internal taper, measured from the longitudinal axis, shall not be larger than 7 degrees.

8.2 When so specified on the purchase order, pipes shall be furnished with ends suitable for use with dresser victaulic or other special couplings. Such pipes shall be sufficiently free from indentations, projections or roll marks for a distance of 200 mm from the end of the pipe to permit a proper make-up of coupling.

8.3 U less specified otherwise, pipes shall be given a mill-coating to pro; tect it 9 rom rustingin transit.

8.3.1 If so required by the purchaser, pipes shall be furnished bare or specially coated. In the case of special coatings, the purchaser should specify whether the coating is to be applied to the full length or whether a

*Dimensions for petroleum industry pipe threads : Part 1 -Line pipe threads.

29

Is : 1978 - 1982

certain specified length from the end is to be left uncoated. Unless specified otherwise, such bare ends are commonly given a coating with oil for protection in transit.

8.4 Workmanship - Imperfections of the following types shall be considered poor workmanship and pipes containing such imperfections shall be rejected. The manufacturer shall take all reasonable precautions to minimize reoccurring damage to the pipe :

4

b)

d)

e)

Dents - The pipe wall shall contain no dents deeper than 6.3 mm measured as the gap between the lowest point of the dent and a prolongation of the original contour of the pipe. The length of the dent in any direction shall not exceed one half the pipe diameter. All cold-formed dents deeper than .3 mm with a sharp bottom gauge shall be considered injurious. The gauge may be removed by grinding;

Q@et of Plate Edges - The radial offset ( misalignment ) of plate edges in the weld seams shall not be greater than 1.6 mm for submerged arc welded pipe. For electric-welded pipe the radial offset of plate edges plus flash trim shall not be greater than 1.5 mm;

Misalignment c$_ Weld Seam in S&merged Arc Welded Pipe - Misalignment of the weld seam ( off-seam weld ) shall not be a cause for rejection provided complete penetration and complete fusion have been achieved as indicated by non-destructive examination;

Height of Outside Weld Bead - The outside weld bead shall not extend above the prolongation of the original surface of the pipe more than the amount listed below :

Wall Thickness, mm

Maximum Height of Weld Bead,

mm

12.70 and under 3.0 Over 12.70 4.5

Outside weld beads which are higher than permitted by the requirements of this clause may be ground to acceptable limits at the option of the manufacturer;

Height of Inside Weld Bead - The inside weld bead ( flash ) of electric welded pipe shall not extend above the prolongation of the original inside surface of the pipe by more tban 1.5 mm; and

30

WatrI%&&se~ (t); MM&nun Depth of a Ttim, mm

3-8 and less O-10 t

3.9 to 7-5 o-4 mm

7-6andRnac 0.05 t

Depth of groove is &&red as tho difference between the wall tm m approximate 25 mm from the weld line and tkrcmainingwalfimdcrthegroove.

Grind& - When suhcc conditioning by grinding is performed, it shall be done in a workmanlike manner.

Hard spots - The snrface of welded pipe in sixes 508 mm outside diameter shall. be examined visuaRy to detect irregularities in the curvatnre of the pipe. When this examination fails tc disclose mechanical damage as the canse of an irregular surface, but instead indicatea that the irregnlar surface may be attributed to a bard spot, the hardness of the area in question shall be determined. If the hardness is 35 Rockwell C ( 327 Brine11 ) or harder and the dimension of the hardened area is greater than 50 mm in any direction, the section of the pipe containing the hard spot shall be removed as a cylinder.

8.5 visaal h@ect&D - All finished pipes shall be visually examined and shall be free of injurious defects as defined in 8.6 ( see 8.7 and 8.8 for repair of injnrious defects ).

8.6 Injnrioua Defects - Injurious defects shall constitute the following :

a)

W

c)

Cracks and Leaks - All cracks, sweats and leaks.

Laminations - Extending into the face or bevel of the pipe and having a transverse dimension exceeding 6.3 mm. Pipes containing these shall be cut back until all lamination is removed.

Arc Bums- Arc burns, defined as localized points of surface melting caused by arcing between electrode or ground and pipe surface, shall be considered defects.

Nora - Contact marks, defined as intermittent marks weld line, resulting from the electrical contact between

ad’accnctnz tiL

supplying the welding current and the pipe surface, are not dcfect8.

31

Is : 1978 - 1982

Pipe containing arc burns shall oe given one of the following dispositions :

1) Arc burns may be removed by grinding, chipping or machining. The resulting cavity shall be thoroughly cleaned and checked for complete removal of damaged material by etching with a 10 percent solution of ammonium per sulphate or a 5 percent solution of nital. If removal of damaged material is complete :

i) The cavity may be merged smoothly into the original contour of the pipe by grinding, provided the remaining wall thickness is within specified limits, or

2)

3)

ii) The cavity may be repaired by welding as follows :

- The minimum length of repair weld shall be 50 mm. - The repair weld shall be made either by manual or

semi-automatic submerged arc welding, inert-gas metal- arc welding, or manual metal-arc welding using low hydrogen electrodes. The metal temperature in the area to be repaired shall be a minimum of 10°C. The welding procedure and performance shall be qualified in accordance with Appendix B.

- The repair weld shall be ground’to merge smoothly into the original contour of the pipe.

- Repair welds shall be inspected by the magnetic particle method in accordance with 12.19, 12.29 and 12.21 or by liquid penetrant, or by agreement between the purchaser and the manufacturer, other NDT methods may be used.

- The repaired pipe shall be hydrostatically tested after repairing in accordance with 11.5.

The section of pipe containing the arc burn may be cut off within the limits of requirements on length.

&ejected.

Other Defects - Imperfections having depth greater than 12.5 pei- cent of the specified wall thickness, measured from the surface of the pipe. Pipes containing such injurious defects may be repaired by one of the following methods :

1) By grinding provided the remaining wall thickness is within the specified limits.

2) In accordance with 8.7 and 8.8.

32

3)

IS : 1978 - 1982

By cutting off a portion of the pipe containing the defect, such that the remaining length is within the tolerance specified.

Pipes which cannot be repaired as mentioned above shall be . . rejected.

e) Undercuts - Undercutting on submerged-arc welding pipe is the reduction in thickness of the pipe wall adjacent to the weld where it is fused to the surface of the pipe. Undercutting ma.y best bc located and measured visually. Minor undercutting defined below on either the inside or the outside of the pipe is permissible without repair or grinding. 1) Maximum depth of 0.8 mm with a maximum length of one-

half the wall thickness and not more than two such undercuts in any 0.30 m of the weld length.

2) Maximum depth of 0.4 mm, any length.

Undercuts longer than onehalf the wall thickness and @4 to O-8 mm in depth, but not exceeding 125 percent of the specified wall thickness, shall be removed by grinding. Undercuts more in depth than 0.8 mm shall be considered injurious.

8.7 Repair of Injurious Defects - are detailed below:

a) Seatnlek Pipe and Parent Metal of Welded Pipe - The repair of injurious defects in seamless pipe and parent metal of welded pipe is permissible except when the depth of ,defect exceeds one-third of the specified wall thickness of the pipe and the length of tha. portion of the defect, in which the depth exceeds 12.5 percent. is more than 25 percent of the specified outside diameter of the pi,pe, or when more than one repair is required in any length equivalent to ten times the specified outside diameter of the pipe. Repairs shall be made in accordance with 8.9.

4

C)

Weld Seam of Welded Pipe - Injurious defects in the weld seam of all welded pipes except electric-resistance welded pipes and induction welded pipes may be repaired at the discretion of the manufaturer in accordance with 8.8. The weld seam of electric- resistance-welded pipes and induction welded pipes may be repaired only by agreement between the purchaser and the manufacturer. Electric resistance weld and induction weld seam repairs shall be in accordance with 8.9. Heat-trecrted Pipe -When heat-treated pipe has been repaired by welding, the subsequent reheat-treatment shall be agreed between the manufacture and the purchaser. based on the effect of the repair on the structure and properties of heat-treated pipe.

8.8 Procedore for Repair of Injurious Defects in Other than ERW and Iadaction Welded Pipe Seam -The repair procedure for defects shall

33

conform to the following requirements. Conformance is subject ‘to approval of purchaser’s representative where the orientation of the defects permits the repair, weld shall be placed in the circgmferential direction:

a)

b)

0)

‘TEaz;iec’ shall be completely removed and the cavity thoroughly

The rebair weld shall be made either by manual or semi- automatic submerged-arc welding, inert gas welding or manual or semi-automatic metal arc welding using coated electrodes, and the welding procedures and performance shall be qualified .in accordance with Appendix B or the repair weld shall be made by automatic submerged arc welding; and

Each length of repaired pipe shall be tested hydrostatically in accordance with 11.5.

8.9 poetdare for Repair of Weld Seams of ERW and Induction Welded Pipe - The repair procedure shall conform to the following requirements an&shall include&e weld zone which is defined for .the purpose of repair as 12.7 mm on either side of the fusion line. Conformance to the repair procedure is subject to approval of the purchaser’s representative:

4

W

cl

4

e)

0

8)

The weld zone defect sha?l be removed completely by chipping and/or grinding and the resultant cavity shall be thoroughly cleaned ;

The minimum length of repair weld shall be 50% mm and individual wdd repairs should be separated by at least 3 m:

The repair weld shall be made either by manual or semi-automatic submerged arc-welding, inert gas metal arc welding or manual metal arc-welding using low hydrogen electrodes. The metal temperature in the area to be repaired shall be a minimum of 10°C. The .welding procedure and performance shall be qualified in accordance with Appendix B;

When a repair weld is made through the full thickness, it shall inc!ude weld passes made from both the outside diameter and the internal diameter of the pipe. The starts and slops of outside diameter and internal diame:er repair welds shall not coincide;

The repair weld shall be ground to merge smoothly into the original contour of the pipes; and shall have a maximum crown of 1.5 mm;

Repair welds shall be inspected by any of the NDT methods in accordance with 12. The choice of these non-destructive testing methods shall be at the option of the manufacturer; and

zwt$ ihall be hydrostatically tested after repair . .

34

in accor-

IS: 1978-198a

9. COUPLINGS

9.1 Cooplii - Couplings for grades YSt 210 and 240 pipes shall be seamless and shall be ma& of a grade of material at least equal in physical properties to that of the pipe. Couplings for grade Yst 170 pipe shall be seamless or welded, and shall be made of St&l. By agreement between the purchaser and the manufacturer, welded couplings may be supplied on pipe 3556 mm and larger, if the couplings are properly marked.

9.1 Couplings shall conform to the dimensions and tolerances shown in Table 3 read with Fig. 1.

NOTE - Couplings covered by Table 3 arc applicable to ather standard weight or extra rtmog pipe.

TABLE 3 COUPLING DIMENSIONS, WEIGHIS A#D TOLERANCES

NOXINAL SIZS

(1)

mm

6 8

:“5

is 32 40 50

:;

1:: 125 150 200 250 300 350 D 400 D 450 D 500 D

mITsIDr DIAMETSII

cot?+3

(2)

mm

14.3 l&3

.22*2 27.0 33.4 40.0 52.2 539 73.0

1E 117.5 132.1 159.9 1877 244.5 298.4 3556 381.0 431.8 482% 533.4

LENGTH NL

(3)

mm

27.0 41’3 41.3 54.0 540 667 69 8 69.8 73.0

104.8 108.0 111.1 114.3 117.5 123.8 133.4

f E 161.9 171.4 181.0 193.7

Q

(4)

mm

11.9 15.3 18.8 22.9 28.3 35.0 43.8 49.9 62.7 75.4 91.3

104.0 116.7 143.7 170.7 221.5 275 4 326.2 3580 408.8 459.6 510.4

WIDTH

Bn zwo FACE

6

I.6 1.6

CALCULATED

COU?LINO WEIOHT

(6)

h3

@02 0’04

g:. 7 P 0.15 0.25 0.47 0.41 0.84 1.48 1.86 2’69 3.45

z,:

:::“9’: 22.37 20.81 25 35 3020 3&OS

TO~CC~DCC on outside diameter W f 1 percent.

35

1s: 1978 - 1982 ir

>.

BASIC POWER TIGHT HAND TIGHT MAKE-UP ow

MAKE-UP

All dimcns,ions in millimetres.

FIG. 1 LINE PIPE AND COUPLING ,

9.3 Threading - Coupling threads shall conform to the requirements given in IS : 3333 ( Part 1 )-1967*. Couplings shall not be expanded to provide the required taper for threads.

9.4’ Couplings shall be free from blisters, pits, cinder marks and any other injurious defects which would impair the efficiency of the coupling or break the continuity of the thread.

9.5 A tensile test shall be made on each heat of steel from which couplings are produced and the coupling manufacturer shall maintain a record of such tests. This record shall be open to inspection by the purchaser. At the option of the manufacturer, tensile test may be made on the finished couplings.

10. JOINTERS

lOi1 Unless specified otherwise, jointers (two pieces coupled or welded together to make a standard length ) may be furnished to a maximum of 5 percent of the order, but no length used in making a jointer shall be less tban 1.5 m. Welded jointers shall comply with the requirements of Appendix C.

11. PHYSICAL TF’STS

11.1 Pipes manufactured according to this .specification shall conform to the physical requirements specified in Table 4.

11.1.1 Longitudinal Tensile Tests - The longitudinal tensile tests shall be performed for determining the tensile properties on seamless and butt- welded pipes in all sizes and for electric welded pipe 16S.3 mm OD and smaller.

*Dimensions for petroleum industry pipe threads : Part I I.ine pipe threads.

36

’ IS : 1978 - 1982

TABLE 4 PHYSICAL PROPERTIES

( Claucc 11.1 )

GRADEOP YIELD ‘I‘ENSILE ELONGATION FOR PIPE STRENGTH STRENGTH GAUOE LENGTH

Min ‘MiIl Min A&

(1) (2) (3) (4)

MP, Mp.

YS1 170 170 310

YSt 210 210 330 see Note

YSt 240 240 410

NOTE- The minimum elongation in 5OgO nun shall be that deterrlGned by the following formula:

c = 1 942’57 A fJO.0

where

8 - minimum elongation in 50.80 mm in percent rounded to the nearest half percent;

/. = cross sectional area of the tensile test specimen in square millime~rcs, based on specified outside diameter or nominal specimen width and specified wall thickness rounded to the nearest 6 sq. mm or 484 mmt whichever is smaller; and

U = specified tensile strength, hi P..

(See Appendix D for minimum elongation values for various size tensile specimens and grades )

11.1.2 Transverse Tensile Tests - For welded pipes of size 219.1 mm OD and larger, transverse tensile tests shall be conducted for the purpose of determining tensile properties.

11.1.3 Weld Tensile Tests - Transverse tensile strength of the weld shall be determined by tests on weld specimens for welded pipes 219-l mm OD and larger.

11.1.4 Yield Strength - Yield strength shall be the tensile stress required to produce a total elongation of 0.5 percent of the gauge length as determined.

11.1.5 All longkudinal and transverse tensile tests shall include yield strengh, tensile strength and elongation determination. The testing shall be done in accordance with IS : 1894-1972” and with the test pieces given in --__ --

*Method for tensile testing of steel tubes (&f rcuision ).

37

IS: 1978-l982

Fig. 2 at ambient ,ternperature. Weld tensile tests need not include determination of yield strength ,or elongation. At the option of the manufacturer, transverse yield strength may be determined by the ring expansion method.

11.1.6 Test Specimens

11.1.6.1 Longitudinal tensile test specimens shall be either full section opecimens or strip specimens at the option of the manufacturer as shown in Fig. 2. Strip specimens from seamless pipes may be taken from any location at the option of the manufacturer. Strip specimens from welded pipes shall be taken approximately 90” from the weld or at the option of the manufacturer from the skelp, parallel to, the direction of rolling and approximately midway between the edge and centre line.

11.1.6.2 All longitudinal strip specimens shall be approximately 38.1 mm wide in the gauge length if suitable curved face testing grips are available; otherwise they shall be approximately 19.00 mm wide for pipes 88.9 mm outside diameter:and less, approximately 25.4 mm wide for pipes 101.6 to 168.3 mm outside diameter, and approximately 38.1 mm wide for pipes of 219-l mm outside diameter and more. Longitudinal test specimens shall represent the full wall thickness of the pipe from which the specimen was cut and shall be tested without flattening.

11.1.6.3 Transverse tensile test specimens from weld pipes shall be taken ‘opposite the weld; transverse weld test specimens shall be taken vith the weld at the centre of the specimen. All transverse test specimens shall be approxi.mately 38.1 mm wide at the gause length and shall represent the full wall thickness of the pipe from which the specimen was cut.

11.1.7 Number of Tensile Tests - One tensile test either longitudinal or transverse as required shall be made on a length of pipe from each lot of 400 lengths or less for each size 141.3 mm outside diameter and less, and from each lot of.200 lengths or less of each size 168.3 to 323.8 mm outside diameter and from each lot of 100 lengths or less of each size 355 6 mm outside diameter and more. For multiple-length seamless pipes, a length shall be considered as all the sections cut from a particular multiple length.

11.1.7.1 One weld for tensile test shall be made on a length of pipe from each lot of 200 lengths or less of each size 219.1 to 323.8 mm outside diameter, and from each lot of 100 lengths or less of each size 355.6 mm outside diameter and more for the welded pipe.

11.1.8 Re-Psts -- If the tensile tcht ‘specimen representing a lot of pipes fails to conform to the specified requirements, the manufacturer may elect _ to make re-tests on two additional lengths from the same lot. If both the re-test specimens conform to the requirements, all the lengths in the lot shall be accepted except the: length from which the initial specimen was

i I

taken. If one or both of the re-test specimens fail to conform to the specified requirements, thz manufacturer may elect to test individually the remaining

38 ;

FULL SECTION SPECIMEN

CONGfTUDlNAL STRIP SPECIMEN

RING EXPANSION SPECIMEN

57.0 t

APPROX 38.1 I 7

L

“I_-.-..+

I r-ii- GAUGE

LENGTH --50.8OCO.13

TRANSVERSE SPECIMEN

L -/ I R25.0mtn.

WELD SPECIMEN

All dimcn-icu:r in millimelres.

< -El-

FIG. 2 TENsiLE Ttx SPECIMENS

39

IS : 1978 - 1982

lengths in the lot, in which case determinations are required only for the particular requirements with which the specimens failed to comply in the preceding tests. Specimens for re-tests shall be taken in the same manner as specified in 11.1.6.

If any tensile test specimen shows defective machining or develops flaws, it may be dlscarded and another ‘specimen substituted. When the elongation of any tensile test specimen is less than that specified and any part of the fracture is outside of the middle third of the gauge length as indl- c*ted by scribe scratches marked on the specimen before testing, a re-test shall be allowed.

11.2 Fluftening-Test - This is an optional test subject to agreement between the manufacturer and the purchaser for both seamless and welded pipes.

11.2.1 ln the case of electric-welded pipes, produced in single lengths - the ‘crop ends of not less than 63 mm cut from each length shall be flattened between parallel plates until the opposite walls of the pipe meet. The tests from each end shall be made alternatively with the welds at 0” and 90” ( point of maximum bending ). No opening in the weld shall take place until the distance between the plates is less than two-third of the original outside diameter of the pipe, and no cracks or breaks in the metal (elsewhere than in the weld) shall occur until the distance between the plates is less than one-third of the original outside diameter of the pipe. Also, evidence of laminztions or the burnt metal shall not develop during the entire flattening operations. If any crop end fails to conform to these requirements, additional tests shall be made on specimens cut from the same end of the same length of pipe until the requirements are met except that the finibhed pipe shall be not shorter than 80 percent of its length after the initial cropping. Precautions shall be taken that crop ends can be identified with respect to the length of pipes from which they were cut.

11.2.2 In the case of electric-welded pipes produced in multiple lengths and subsequently cut into single lengths, a flattening test shall be made described in 11.2.1 on test specimens cut from each end of each multiple length with the weld at 90” ( point of maximum bending) of not less than 63 mm. Tests shall also be made on two intermediate rings cut from each multiple length of pipe with the weld at 0”. When a weld stop condition occurs during production of multiple lengths, flattening tests with the weld at 90” shall be nlade from the crop ends resulting from each side of the weld stop, and may be substituted for the intermediate flattening tests.

If any of the specimens fails to conform to the requirements specified in 11.2.1, the manufacturer may elect to make re-tests on specimens, cut from each end of each individual length as provided in 11.2.1. The re-tests for each end of each individual length for electric resistance welded steel pipe shall be made with the weld alternately at 0” and 90”.

IS : 1978 - 1982

11.2.3 In the case of butt-welded steel pipes of size 73.0 mm outside diameter and more, one section of pipe approximately 150 mm long cut from a length from each lot of 400 lengths or less of each size, shall be flattened between parallel plates with the weld placed at 90” (point of maximum bending ). No opening shall occur by fracture in the weld until the distance between the plates is less than 75 percent of the original outside diameter of the pipe, and no cracks or breaks in the metal elsewhere than in the weld shall occur until the distance between the plates is less than 60 percent of the originat outside diameter. If the specimen fails to conform to these requirements, the manufacturer may elect to make re-tests on specimens cut from two additional lengths from the same lot. If all re-test specimens conform,to the specified requirements, all the lengths in the lot shall be accepted except the length from which the initial specimen was taken. If one or more of the re-test specimens fail to conform to the specified requirements, the manufacturer may elect to repeat the test on specimens cut from the individual length remaining in the lot.

11.2.4 Fhttening Test for Seamless and Welded Pipes - In case of seamless pipe, a section not less than 63 mm in length from each lot of 400 lengths or less of each size shall be flattened cold between parallel plates in two steps. During first step, which is a test for ductility, no cracks or breaks on the inside, outside or end surfaces shall occur until the distance between the plates is less than the value of H calculated as follows:

H-(l+e)t/(eft/D)

where

H = Distance between flattening plates, mm;

c = Deformation per unit length ( constant for a given grade of steel, 0.09 for grade YSt 170 and grade YSt 210, and 0.07 for grade YSt 240),

t = Specified wall thickness, mm; and

D = Specified outside diameter mm.

During the second step, which is a test for soundness, the flattening shall be continued until the specimen breaks or the opposite walls of the pipe meet. Evidence of laminated or unsound material that is revealed during the entire flattening test shall be case for rejection.

11.3 Rend Test - In the case of butt-welded steel pipes of size 60.3 mm outside diameter and less, one-full section specimen of an appropriate length, cut from a length of pipe from etch lot of 400 lengths or less of each size, shall be bent cold through 90” around a mandrel having a diameter not greater than twelve times the outside diameter of the pipe being tested, with the weld located approximately 45” from the point of contact of the specimen with the mandrel. No cracks shall occur in any portion of the pipe and no opening shall occur in the weld. If the specimen fails to

41

Is : 1978 - 1982

conform to these requirements, the manufacturer may elect to make re-tests on specimens cut from two additional lengths from the same lot. If all re-test specimens conform to the specified requirements, all the lengths In the lot shall be acckptcd except the length from which the initial specimen was taken. If one or more of the retest specimens fail to conform to the specified requirements, the manufacturer may elect to repeat the test on specimens cut from the individual length remaining in the lot.

NOTE - For the purpose of mechanical testing the weld of electric-welded pipe Of 60.3 mm outside diameter and larger,. ‘We weld” aten& to a distance of 127 mm on either ride of the fusion line. For pqe smaller than 6@3 mm outside diameter, “the weld” extends to a diatanci of a3 mm on either side of the fusion line.

11.4 Submerged-Arc Weld Tests- For submerged arc welded pipe the welds shall be tested by the guided-bend test described in 11.4.1. The required specimens shall he cut frdm the weld of a length of pipe from each lot of 50 lengths or less of each size. The specimens shall not contain any repair welding made by the manual metal-arc procedure.

11.4.1 Guided-bend Test - One face bend and one root bend spednmen, both conforming to Fig. 3 shall be bent approximately 180” in a jig substantially in accordance with Fig. 4. For any combination of diam&er, wall thickness and grade, the maximum value for jig dimension “A” may be calculated by the formula. The manufacturer shall use a jig based on this dimension, or a smaller dimension at his option, however, to minimize the number of jigs required, standard values for dimension “A” have been ‘selected for pipe sizes 323.8 mm and larger. These values are listed for each diameter, wall thickness, and grade in Appendix E. When dimension “A” is greater than 225 mm, the length of the specimen required to contact the male die, need not exceed 225 mm. For pipe with wall thickness over 19.1 mm, a reduced wall specimen as shown in Fig. 3 may be used at the option of the manufacturer. Reduced wall specinens shall be tested in a jig with the “A” dimension calculated for 19.1 mm wall pipe of the appropriate size and grade.

11.4.1.1 The specimens (a) shall not fracture completely, (b) shall not reveal any cracks or ruptures in the weld metal greater than 3.1 mm in length regardless of depth, and (c) shall not reveal any cracks or ruptures in the parent metal, the heat affected zone, or the fusion line longer than 3.1 mm and deeper than 124 percent of the specified wall thickness; except cracks which occur at the edges of the specimen and which are less than 6.3 mm long shall not be the cause for rejection in (b) or (c), regardless of depth. Tf the fracture or crack in the specimen is caused by a defect or flaw, that specimen may be discarded and a new specimen substituted.

11.4.2 Retests-If one or both of the guided bend specimens fail to conform to the specified requirements, the manufacturer may elect so repeat the tests on specimens cut from two additional lengths of pipe from the same lot. If such specimens conform to the specified requirements, all the

42

IS : 1978 - 1982

BE OXYGEN CUT

Q I.bmar.

i .._dh.!k-d.!k-1 [WALL THICKNESS t

WELD RLINFORCEUEHT SHALL BE REMOVED FROM BOTH FACES

REDUCED WALL SPECCIWENS

OPTIONAL FOR WALL IHICKNESS OVER Zomm

-REDUCED WAtl THICKNESS

THIS MATERIAL REMDV BEFORE OR AFTER FL MANUFACTURERS OPT

REDUCED WALL THICKNESS

Nom. - Use jig dimensions for 20 mm wall, when terting with reduced wall specimens.

FIG. 3 GUIDED BEND TLST SPECIMEN

lenghs in the lot shall be accepted, except the length initially seleted for test. If any of the re-test specimens fail to pass the specified requirements, the manufacturer may elect to test specimens cut from the individual lengths remaining in the lot. The manufacturer may also elect to re-test any length which has failed to pass the test by cropping back and cutting two additional specimens from the same end. If the requirements of the original test are met by both of these additional tests, that length shall be acceptable. No further cropping and retesting is permitted. Specimens for retests shall be taken in the same manner as specified in 11.4.1.

11.5 Hydrostatic Tests

11.5.1 Each length of the pipe shall withstand without leakage, a minimum hydrostatic pressure as specified in 11.5.2. The test pressure for all sizes

43

a A- ALTERNATE

ADJUSTABLE WRAP-AROUND TYPE

A= 1.15x 10,(D-22t) _ t D

e - - - 2.3 - lOI) t

where 1.15 - Peaking factor D E Specified OD, mm t - Spccificd wall thickness, mm c = Strain, mm/m

- 167.5 for Grade A = lW5 for Grade B

RA =$A B - A + 2t f 3-2 mm RB -1B

All dimensions in millimctrcs.

FIG. 4 JIG FOR GUIDED BEND TEST

44

IS : 1978 - 1982

of seamless pipes and for welded pipes in sizes 45720 mm outside diameter and less, shall be maintained for not less than 5 seconds.

11.5.1.1 Test pressure for welded pipes in sizes 50890 mm and larger shall be maintained for not less than 10 seconds.

11.5.1.2 Welded pipe shall be struck while under pressure with a one kilogram hammer or its equivalent at the both ends of the pipe within 30 degrees of either side of the weld seani.

11.5.1.3 For threaded and coupled pipe, the test shall be applied with the couplings made up power-tight, if power-tight make up is specified on the purchaser order, except 508.00 mm pipe may be tested in plain-end condition; For threaded pipe furnished with couplings made up handling tight, the hydrostatic test shall be made on the pipe in the plain end or threads only condition or with couplings applied, unless otherwise agreed upon by the purchaser and the manufacturer.

11.5.1.4 The testing.apparatus shall be fixed with an accurate pressure indicator and recorder and provision shall be made for its accuracy to be verified by the purchaser, if required. Such records or charts shall be available for examination at the mill by the purchaser’s inspectors when the purchaser is so represented at the mill.

NOTE 1 -The hydrostatic test pressures specified in these tables are mill inspection teat pressures. They are not intended to be used as a basis for design and they do not necessarily have any direct relationship to working pressures.

NOTE 2 -For 6&3 mm outside diameter and more grades YSt 210 and 240 plain end pipes, the test pressures have been computed by the following formula. but limited to 122 MPa for sizes 88.9 mm and less and to 193 MPa for sizes larger than 88’9 mm. All other test prissures have been established arbitrarily:

p =2oOOSt D

P = Hydrostatic test pressure in Mcga Pascal,

t = Tabulated wall thickness in millimetres,

D = Specified diameter in mm, , S = Fibre stress, as outside given belfiw:

Grade F&e Sfras MPa r--------- -~_I--__-_- ~

Standard Alternative Test Pressure Test Pressure

YSt 210 124 1 155 YSt 240 145 181

11.5.2 Test pres*ures shall be as specified id: Tables 1 and 2 or a higher pressure as agreed between the purchaser and the manufacturer. t

4s

It. NON-DESTRUCTWE TESTING

l&l The weld seam of pipes furnished as per this standard shall be non- destructively tested for full iength as given below for sizes 60.3 mm, OD and huger of grades YM 210 and YSt 240. The location of equipment in the mill shall be at the discretion of the manufacturer.

4

12.1.1

Submerged-arc-welded pipe shall be inspected by radiological methods in accordance with 12.2 and 12.13 full length, or for a distance of 203 mm from each end, if also inspected full length by ultrasonic methods in accordance with 12.14, 12.15, 12.16 and 12.17.

Electric-welded pipe shall be inspected by ultrasonic or electromagnetic methods in accordance with 12.14, 12.15, 1216 an& lZ17.

By agreement between the purchaser and the rrcauuf&eturer _and ._ _ when specified on the purchase order seamless pipe shag be non-destmctively inspected in accordance with Appendix F.

12.2 Badidogieal Inspection Equipment - The homogeneity of a weld may be examined by means of X-rays which are directed tbrougb the weld material onto a suitable radiographic film or onto a fluorescent screen. The film, after development, shows the shadowgraph of the weld and discontinuities which may bc observed. The shadowgraph may be observed directly on a fluorescent screen or it may be reproduced on a television screen. X-ray equipment using either film, a fluorescent screen, or a television screen may be used provided adequate sensitivity may be obtained.

12.3 Fluorqscopic Operator Qualification - Operators of fluoroscopic equipment shall be trained, tested and certified by the pipe manufacturer. Details of such training testing and certification programme shall be available to the purchaser. Included in this programme shall be :

a) ciassroom instructions in the fundamentals of radiological inspection techniques;

b) on tlie job training designed to familiarize the operator with specific installations including the appearance and interpretation of weld imperfections and defects. The length of time for such tranining shall be of sufficient duration to assure adequate assimilation of the knowledge required for conducting the inspection :

4 d)

knowledge of appropriate requirements of this specification;

a physical examination at least once every year to determine the operator’s optical capability to perform the required inspection: and

IS : 1978 - 1982

e) upon completion of (a) and (b), an examination shall be given by the manufacturer to determine if the operator is qualified to properly perform fluoroscopic examination.

12.4 Certified operators whose work has not included fluoroscopic inspection for a period of one year or more shall be recertified by successfully completing the examination of (e) above and also passing the physical examination of(d) above. Substantial changes in procedure or equipment shall require recertification of the operators.

12.5 Reference Standards - Unless otherwise specified, the reference standard shail be the _4PI standard penetrameter described in 12.6 or at the option of the manufacturer the IS0 wire penetrameter described in 12.7. By agreeement between the purchaser and the manufacturer other standard penetrameters may be used.

12.6 API Standard Peoetrameter* - The API standard penetrameter shall be as shown in Fig. 5 and made of a material with the same radiological characteristics as the pipe. The thickness of the penetrameter shall be a maximum of 4 percent of the nominal wall thickness. Either 2 percent or 4 percent penecrameters may be used at the option of the manufacturer. Standard 4 percent penetrameter sizes are given in Table 5.

12.7 IS0 Wire Penetrameter* - The IS0 Wire penetrameter shall be Fe l/7, Fe 6112 or Fe 10116 in accordance with Table 6 for the appropriate wall thickness.

12.8 Frequency - The penetrameter shall be used to check the sensitivity and adequacy of the radiographic technique on one pipe in every lot of 50 pipes, but not less than twice per 8 hour working shift when the fluoror- topic method is used full length, and on each film when film is used. When film is used full iength, one penetrameter shall be used for each length of pipe. The pipe shall be held in a stationary position during the adjustment of the radiographic technique by use of the penetrameter. Proper definition and sensitivity is attained when all three holes of the API standard penetrameter or individual wires of the IS0 penetrameter are clearly discernible.

12.9 Procedure for Evaluating in Motion Operation of the Fluoroscope - *Q evaluate the definition of defects at operational speeds, a pipe se&oh having a minimum wall of 9.5 mm (see Fig. 6) shall be used. Series of’ 0.79 m,& holes, as shown in Example 6 ( see Fig. 6) shall be drilled into the centre oF the weld to a depth of 100 percent of the total thickness. At least four suqh series shall be used, spaced 300 mm apart. As an alternate to use of the pipe section described above, a penetrameter as described in 12.5, 12.6 and 12.7 may be used at the option of themanufacturer. The speed of operation shall be adjusted so that the holes in the pipe section ,or API penetrameter, or individual wires in the IS0 penetrameter, are cleaify visible to the operator.

‘* Please se, Note under Table 5.

47

-- .__

IS:1978-1982 ,’

T

JL 38

/

I3 --15 --+--++- + +

=lOENTlFYlNG NUMBER

The diameter of each hole shall be I.6 mm. Holes shall be round and drilled perpendicular to the surface. Holes shall be free of burrs, but edges shall not be chamfered. Each penetrameter shall carry a lead identification number as given in Table 5.

All dimensions in millimetres.

FIG. 5 API STANDARD PENETRAMETER

TABLE 5 API STANDARD 4 PERCENT PENETRAM&TERS+

( Cfuvse 12.6 )

WALL THICKNESS r_---L -----7

OV_ Through

mm mm

MAXI~IUM PENETRAUETER IDENTIFYING THICKNESS NUMBER

mm

6’4 7.9 ;:; 11.1 9.5

11’1 12.7 12.7 15.9 15’9 191 19.1 25.4 25.4 31.8

O-32 12 0.38 0.44 t: 0’51 0’64 ::

0 76 0.89 E 1.02 40

*It is proposed to substitute reference to the corresponding Indian Standard IS : 3657- 1976 Specification for radiographic image quality indicators (Jcrst r&.rion ).

12.10 Acceptance Limits - Radiological examination shall be capable of detecting weld imperfections* and defects? as described in 12.11 and 12.12.

12.11 Imperfections - The maximum acceptable size and distribution of slag inclusion and/or gas pocket discontinuities are shown in Tables 7 and El and Fig. 6 and 7.

NOTZ 1 - Unless the discontinuities are elongated, it’cannot be determined with assurance whether the radiological indications repraent slag inclusions or gas pockets. Therefore, the same limits apply ti, all circular-type discontinuities.

l An imperfection is a discontinuity or irregularity in the product detected by methods outlined in this specification.

t A defect is an imperfection of sufficient magnitude to warrant rejection of the product based on the stipulationsof this specification.

48

Is : 1978 - 1982

NOTE 2 -, The important factors to be considered in determining rejection or acceptance limits UC rim and spacing of discontinuitia and @e sum of the diameters in an establishe& distance. For simplicity, the distance 9 established as any 152.4 mm length. D&continuities of this type usually occur in an aligned pattern, but no distinction his made between aligned or scattered patterns. Also, the distribution pattern may be of assorted sizes.

TABLE 6 IS0 WIRR PENETRAMETER’ (SENSITIVITY 4 PERCENT)

( Clau1e 12.7 )

WIRE No. WIRE DIAMETER WALLTHICKNSSS mm

Fe f/7

1 320 2 2.50 3 200 4 1.60 5 1.25 6 1’00 7 0.80

6/l?

6 I *QQ 7 0.80 g 0.63 9 @50

10 0.40 II 032 12 0.25

Fe liY/l6

10 0.40 11 0.32 12 O-25 13 0.20 14 0.16 I.5 0.13 16 0.10

To determine correct wall thickness for : 4 percent sensitivity - divide wire diameter by *04

2 percent sensitivity - divide wire diameter by -02

Always use penetramcter with wall equivalent wire near center.

*PIeare SCI under Table 5.

mm

82.6 63.5 50.8 41.1 31.8 25.4 20.3

25.4 20.3 15.9 12.7 10.2 8.3 6.4

10.2 8.3 6.4 5-1 4’1 3.2 2’5

49

1s : 1978 - 1982

12.12 Defects - Cracks, lack of complete penetration, or lack of complete fusion, and discontinuities greater in size and/or distribution than shown in Tables 7 and 8 and Fig. 6 and 7 as indicated by radiological examination shall he considered defects. See 8.6 for disposition of pipe containing defects. 12.13 Weld Repair - Any weld rejected as a result of radiological examination may be repaired at the option of the manufacturer, and, if repaired by welding, shall be done in accordance with 8.7 and 8.8 and shall be re-examined radiologically.

l 0

EXAMPLE 1: TWO 3.Zmm DlSCONTlNUlTlES

I . . 0 . I EXAMPLE 2:ONE 3.2mm,ONE 1.6mm.TWO 0.8mm DISCONTINUITIES

. . . . . . . . 1 EXAMPLE 3:ONE 3.2mm.ONE O.Bmm,SIX 0.4 mm OISCONTlNUIT!ES

I 0 . . . 1 1 EXAMPLE I: FOUR 1.6mm DISCONTINUITIES

1

I . . . . . . I EXAMPLE 5:TWO 1.6mm.FOUR 0.8mm DlSCONTINUITIES

. . . . . . . . I EXAMPLE 6:EIGHT 0.8 mm DISCONTINUITIES

I . . . . . . * . . . . . . . . . I EXAMPLE 7: SIXTEEN O.&mm MSCONTINUITlES

EXAMPLE 8 : SCATTERED. THREE Odmm,TEN 0.4 mm DISCONTINUHIES e

FIG. 6 EXAMPLES OF MAXI~IUM DISTRIBUTION PAW OF INDI&TED CmcULLE AND GAS Pocre~

IS : 1978 * 1982

I 0 I EXAMPLE I: ONE 12.7mm DiSCONTlNUlTY

D c3 I EXAMPLE 2:TWO 6.;mm OlSCONTlNUlTlES

1 I EXAMPLE 3: THREE 3.2 DISCONTINUITIES

FIG. 7 EXAMPLES OF MAXIMUM DISTRIBUTION PATTERNS OF INDICATED ELONGATED SLAG-INCLUSION TYPE DISCONTINUITIES

TABLE 7 CIRCULAR SJ..AG.JNCLUSION AND GASPOCKET TYPE DISCONTJNUITIKS* (See Fig. 6 )

( CIuusar 12.9, 12.12 and Fig. 6)

SIZE ADJACENT SIZE MINYMIJH SEPARATION M.hxlMUsn NUMBER

mm mm mm IN ANY ( 152’4 mm)

+32 3.2 50.8 2

t3.2 l-6 25.4 Varies

t3.2 0.8 12-7 Varice

*3’2 0.4 9.5 Varies

1.6 1.6 12.7 4

1.6 68 9.5 Varier

1.6 0’4 6.4 Varies

0.8 0.8 ?6-4 8

O-8 0.4 4-8 \‘arics

0.4 0.4 3.2 16

*The sum of the diameters of all discontinuities in any ( 152’4 mm ) not to exceed (6’4 mm).

tMaximum size discontinuity for ( 6.4 mm ) wall and lighter shall be ( 2’4 mm ).

fTwo discontinuitiu ( 0.8 mm ) or smaller, may be as close as one diameter apart provided they arc separated from any other discontinmty by at least ( 12.7 mm ).

51

__ _,._ .._. _^I___, _ ___.__ _“_____ ._--.._ . ..--.--- -.-.--------~ --- .._ .l_l_

Is : 1978 - 1982

TABLE 8 ELONGATED SLAGINCLUSION-TYPE DISCO.VTINUITIBS+

( Clouzes 12.11, 12.12 andFig. 7 )

MAXIMUM DIMENSIONS MINIMUH SEPARATION MAXtNUM Nuvsrn IN ANY mm mm (152.4mm)

1.6 x 12.7 152’4 1 1.6 x 6.4 76.2 2

1.6 x 3.2 50’8 3

“Maximum accumulated lcr h of discontinuities in any ( 152’4 mm ) shall not exceed ( 12’7 tirn ).

12.14 Equipment for Ultrasonic and Electromagnetic Inspection - Any equipment utilizing the ultrasonic or electromagnetic principles and capable of continuous and uninterrupted inspection of the weld seam shall be used. The equipment shall be checked with an applicable reference standard as described in 12.15 at least once every working turn to demonstrate its effectiveness and the inspection procedures. The equipment shall be adjusted to produce well defined indications when the reference standard used bv the manufacturer is scanned by the inspection unit in a manner simulating the inspection of the product, and shall be capable of inspecting l-6 mm on either side of the weld line for the entire wall thickness.

12.15 Reference Standards for Ultrasonic and Electromagnetic Inspection - Reference standards shall have the same specified diameter and thickness as t$e product ibeing inspected and may be of any convenient length as determined by the manufacturer. Reference standards shall contain machined notties, one on the inside surface and one on the outside surface, or a drilled hdle as shown in Fig. 8, at the option of the manufacturer. The notches shall be parallel to the weld seam, and shall be separated by a distance sufficient to produce two separate and distinguishable signals. The 1.6 mm or 3.2 mm hole shall be drilled through the wall and perpendicular to the surface of the reference standard as shown in Fig. 8.

Nore - The reference standards defined above are convenient standards for calibra- tion of bon-destructive testing equipment. The dimensions of these standards should not be constyled as the minimum size imperfection detactable by such equipment.

12.16. Acceptance Limits for Ultrasonic and Electromagnetic Inspection - TBble 2 gives, the height OF acceptance limit signals in percent of the height of signals p?oduced by reference standards. An imperfection that produces a signal greater than the acceptance limit signal given in Table 9 shall

% tdter ‘t copddered a defect unless it can be demonstrated by the manufae- it’ the imperfection does not exceed the provision of 8.4 and 8.5.

Alternatively, indicated imperfections in subyerged-arc and gas metal-arc welded pipe may be reinspected by radiological methods in accordance with 12.2 to 12.1X In addition, for gas metal-arc welded pipe, dontinnous

ls:l!m-1982

B(BUTTRESS) NOTCH

V 10 NOTCH

AREA OF EACH SIDE 3.87mm2 max. P(PARALLEL SIDED) NOTCH

__I Y_. .

5*/,1+15*/. WITH min. OF 0.3 k.OSmm

OEPTH

10%1 t 1: WITH mir 0.3 ?r.o5n

I. OF nm

LENGTH FOR EDDY CURRENT-38mm max. TOTAL LENGTH FOR DIVERTED FLUX ANIJ ULTRASONIC - 5Omm “I”. OF FULL DEPTH

N 5 AND N 10 NOTCH

FIG. 8 REFERENCE STANDARDS

53

IS : ‘1978 - 1982

flaw signals greater than 25 mm in length regardless of height, but, greater than the background signal (noise), shall be re-inspected by radiological methods in accordance with 12.2 to 12.13 or by other techniques as agreed upon between the purchaser and the manufacturer.

TYPE WELD

(1)

TABLE 9 ACCEPTANCE LIMITS

( Clause 12.6 )

TYPE NOTCH SIZE HOLB mm

(2) (3)

ACCEPTANCB Lrxm SIONAL, PERCENT

(4)

Submerged-arc ] and

metal-gas arc _I-

Electric-resistance, ) Electric-flash and ) Electric-induction J

N5 All other

NlO, VlO B.P.

;:;

32

I 00 334

100 80

12.17 Weld 2epair - Defects in the weld, found by ultrasonic or electromagnetic methods of inspection, may be repaired by welding in accordance with 8.7 to 8.9 and the repaired area shall be re-examined non-destructively by either the ultrasonic or electromagnetic inspection method, at the option of the manufacturer, except that for gas metal-arc welded pipe, the re- examination shall be done by ultrasonic methods.

Ii.18 Reinspection of Pipe Ends - For cold expanded welded pipe n,on- destructively inspected prior to cold expansion, the weld at each end of each length shall be non-destructively reinspected subsequent to cold expansion for a distance of at least 150 mm by any of the methods specified in 12.1 or by the magnetic particle method in accordance with 12.19, 12.20 and 12.21.

12.19 Magnetic Particle Inspection (for Repair Welds and Pipe Ends Only) Equipment - The equipment used for magnetic particle inspection of pipe ends shall produce a magnetic field, transverse to the weld, and of sufficient intensity to indicate weld area defects in the external surface of the pipe of the following characters, open welds, partial or incomplete welds, intermittent welds, cracks, seams and slivers.

12.20 Reference Standard - If requested by the purchaser, arrangements shall be made by the manufacturer to perform a demonstration for the purchaser or his representative during production of his order. Such demonstration shall be on the basis of pipe in process or sample lengths of similar pipe retained by the manufacturer for that purpose and which exhibit natural or artificially produced defects of the oharacter started .in 12.19.

54

IS : 1978 - 1982

lP21 Acceptance Limits - The manufacturer shall mark each magnetic particle indication and subsequently explore each indication with respect to depth of the imperfection. Imperfections which require grinding or chipping to determine their depth shall be completely removed by grinding, or by cutting ofI’, or may be repaired by welding in accordance with 8.7 to 8.9 and re-examined non-destructively.

13. MARKING

13.1 The pipes shall be marked with the following particulars either by paint stencilling or die-stamping or any other method as agreed to between the purchaser and the manufacturer:

a) Manufacturer’s name or trade-mark;

b) Nominal size;

c) Weight in kilogram per met+;

d) Grade;

e) Process of manufacture: The symbol ‘S’ may be used for s;amles,G pipes, ‘l? for welded pipe except but-welded and ‘F’ for but- welded pipes;

f) Type of steel: The following symbols shall be used: Electric-furnace steel . . . . . . . . . E

Rephosphorized steel ( class II ) . . . . . . . R

Nom -No type marking is required for open-heart or basic-oxygen steel.

g) The total length of the pipe in the bundle in metres and centimetres shall be ma ked on a metal tag attached to the bundle for sizes 48.3 mm out snf de diameter and smaller. For sizes larger than 48.3 mm outside diameter, the length in metres and centimetres shall be paint stencilled on the outside surface at least 60 mm from the end or, it so agreed between the purchaser and the manufacturer at a suitable place on the inside surface;

h) For sizes 60.3 mm outside diameter and more, when specified hydrostatic test pressure is higher tw the tabulated pressure (see Tables 1 and 2 ), the test pressure in MPa preceded by the word TESTED, shall be’ paint stencilled ; and

j) Fee;;eeatment ( where applicable ), the following symbols may

1) Normalized or normalized and tempered . ..HN 2) Sub-critical stress relieved . . . HS 3) Sub-critical age hardened . ..HA

55

_.

X4:1978-1982

13.1.1 Each pipe may also be marked with the IS1 Certification Mark. NOTE - The use of the IS1 Certification Mark is governed by the previsions of the

Indian Standards Institution ( Certification Marks ) Act +d the Rules and Regulations made thereunder. The IS1 Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the rcquiremmts of that standard under a well-defined system of inspection, testing and quality control which is devised and supervised by IS1 and operated by the producer. IS1 marked products are also continuously checked by IS1 for conformity to that standard as a further safeguard. Details of conditions under which a licencc for the use of the IS1 Certification Mark may be granted to manufacturers or processors, may be obtained from the Indian Standards Institution.

13.1.2 Pipes shall be marked by the manufacturer as specified below unless otherwise agreed to between the manufacturer and the purchaser:

4

‘b)

For sizes larger than 48.3 mm outside diameter, the required marking shall be paint stencilled on the outside surface of each pipe, or if so agreed between the purchaser and the manufacturer at a suitable place on the inside surface. Additional paint markings as desired by the manufacturer or as requested by the purchaser are not prohibited; and

For sizes 48.3 mm outside diameter and less, the required marking shall be die stamped, on a metal tag fixed to the bundle, or may be printed on the straps or banding clips used to tie the bundle.

13.2 Die Stamped Markings - For sizes 48.3 mm outside diameter and less the following information in a sequence shall be die stamped on the tag, strap or clip used to tie the bundle.

4 b) cl 4 e) f 1 id

Manufacturer’s name and trade-mark,

*ISi monogram;

The nominal size of pipe,

Grade ( see 5 ),

Process of manufacture [ see 13.1 (e) 1,

Type of steel [ see 13.1 (f ) 1, and

Length shall be marked as specified in 13.1 (g), . .

NOTE 1 - The manufacturer may die stamp on the pipe or plate for the rizc 6@3 mm outside diameter or more.

NOTE 2 - Hot die stamping is permissible in every case. Unless otherwise agreed when placing the order, cold die stamping is prohibited for grades YSt 210 and YSt 240 or plate not subsequently heat treated and all the pipes having thickness of 4 mm and less. Cold die stamping shall be done with rounded or blunt dies. the die stamping shall be at least 25 mm from the weld.

For welded pipe,

13.3 Paint-Stencilled Markings - For sizes 60.3 mm outside diameter and more, paint-stencilled markings shall be placed on the outside surface on.

*Where the manufacturer is licensed to use the IS1 Certification Mark.

56 1

IS : 1978-1982

each length of pipe, starting approximately 300 mm from the end in the sequence shown below.

If so agreed when the order is placed, all or part of the_ markings may be placed on the inside surface in a sequence convement to the manufacturer. The markings shall be separated by a dash or shall be adequately spaced.

13.3.1 Marking Seqoence - The sequence of paint-stencilled markings shall be as follows:

a) Manufacturer’s name or trade-mark, b) *IS1 monogram, c) Outside diameter (OH) of the pipe, d) Weight in kilogram per metre, e) Grade ( see 5 ),

f) 8) h) j) k)

Process of manufacture [ see 13.1 (e) 1, Type of steel [ See 13.1 (f) 1, Heat treatment, Hydrostatic test pressure, and Length shall be marked as specified in 13.1 (g).

14. INSPECTION

14.1 Inspection Notice - Where the inspector representing the purchaser desires to inspect the pipe or witness the tests, reasonable notice shall be given of the time at which the run is to be made.

14.2 Plant Access - The inspector representing the purchaser shall have free entry at all times, while work on the order of the purchaser is being performed, to all parts of the manufacturer’s works which will concern the manufacture of the pipe ordered. The manufacturer shall afford the inspector without charge, all reasonable facilities to satisfy him that the pipe is being manufactured in accordance with this specification. All inspections should be made at the place of manufacture prior to despatch from works unless otherwise specified on the purchase order and shall be so conducted as not to interfere unnecessariiy with the operation of the works.

14.3 Rejection - Material which shows injurious defects on mill inspection or subsequent to acceptance at the manufacturer’s works, or which proves defective when properly applied in service, may be rejected and the manufacturer so notified. If tests that require the destruction of material are made other than at the place of manufacturer, the purchaser shall pay

*Where the manufacturer is licensed to use the ISI Certification Mark.

57

Is : 1978 - I9t32

for that material which meets the specification but shall not pay for any material which fails to meet the specification.

14.4 Complhtce - The manufacturer is responsible for complying with all of the provisions of this specification. The purchaser may make any investigation necessary to satisfy himself of compliance by the manufacturer and may reject any material that does not comply with this specification.

APPENDIX A

( Clauses 0.2 and 2.4 )

GUIDELINES FOR ORDERING

A-I. Some guidelines helpful in ordering line-pipes are given below: a) Specification - IS : 1978; b) Grade - YSt 170, YSt 210, YS’r 240; C) Process of Manufacture - Seamless, ERW, butt welded, subm‘erg-

ed arc welded, double seam welded; d) Nominal size; e) Wall thickness or weight per metre;

f) Length- Single or double random or specified length; g) Ends - Bevelled, plain, threaded; h) Hydraulic Test Pressure - Standard or alternate; and j) Non-destructive Test - Optional for seamless pipe.

APPENDIX B

( Chuses’ 2.4, 8.6, 8.8 and 8.9 )

REPAIR-WELDING PROCEDURE AND WELDER PERFORMANCE TESTS

B-l. GENERAL

B-I.1 All manual and semi-automatic submerged arc and gas-shielded arc repair welds and manual and semi-automatic metallic arc repair welds using coated electrodes shall be made according to a tested procedure and by a repair welder tested in a flat position as specified in B-2 2nd B-3.

When the base nictal temperature of the material to be repair welded is below lO”C, submerged arc, gas shielded arc or manual metallic arc methods with low hydrogen electrodes shall be used.

58

IS : 1978 - 1982

The manufacturer shall maintain a record of the procedure and performance test results.

B-2. REPAIR-WELDING PROCEDURE TESTS

B-2.1 Repair-welding procedure tests shall be carried out on two specimens of every grade and on material which is on the high side of the chemistry specification and which is at least as thick as the pipe on which welds are to be made. These tests shall be carried out at a temperature at or below, the lowest temperature at which repair welds are made.

B-2.2 Transverse Tensile Test - The transverse tensile test specimen shown in Fig. 9A shall be approximately 38 mm wide and shall have the transverse metallic arc butt weld prependicular to the longitudinal axis at the centre of the test specimen. The weld reinforcement shall be removed from both faces.

The ultimate tensile strength shall be at least equal to the minimum specified for the grade.

B-2.3 Longitudinal Tensile Elongation - The longitudinal tensile elongation test specimen shall conform to Fig. 9B. The weld shall be made in a groove as shown. The elongation after complete rupture of the test specimen in tension shall be at least equal to the minimum elongation specified for the grade.

B-2.4 Transverse Guided Bend Test - The transverse guided bend test shall conform to Fig. 9C. The weld shall be made in a groove as shown. The specimen shall be placed on the die with the weld at mid-span, and shall be bent approximately 180” in a jig substantially in accordance with Fig. 4 with the exposed surface of the weld in tension.

The bend test shall be acceptable if : no crack or’ other defect exceeding 3.10 mm in any direction develops in the weld metal or between the weld and the pipe metal after bending. Cracks which originate along the edges of the specimen during testing and which are less than 6.30 mm, measured in any direction, shall not be considered or, the specimen cracks or fractures during bending and the exposed surface shows complete penetration and fusion throughout the entire thickness of the weld specimen, no more than six gas-pockets for an area of 645 mm* with the larget dimension not exceeding l-6 mm and no slag inclusion greater than @8 mm in depth or 3-l mm in width and separated by at least 12.7 mm of sound metal. ( If necessary, the specimen shall be broken apart to permit examination of the fracture).

B-3. NICK-BREAK TEST

B-3.1 The specimen shall conform to Fig. 10. The weld shall be ma& in a groove as shown. The specimen shall be hacksaw-notched from both

59

IT SPECIMEN EDGES MAY BE OXVGEN CUT AN0 MAV ALSO Be MACHINED

/WELD

WALL

I f

THICKNESS( I)

9A Tensile Test Specimen (Tr8nrvcrra)

THESE EDGES WV BE EDGES WALL BE MACHI~EG

OXVGEN CUT AN0 UAV ALSO BE MACHINED 57.0

75.0

WELD REINFORCEMENT SHALL BE REMOVE0

9B Tensile-Elongation Test Specimen

k.PECIMEN EDGE5 MAV BE UXVGENCUT AN,, MAY ALSO BE MACHINED

671.6 7

-

SEE CL AUSE B-2.1

WELD REINFORCEMENT SHALL BE REMOVED

9C Guided-Bend lest Specimen

All dimensions in millimetrcr.

FIG. 9 REPAIR WELDING BECIYENS

60

i

IS : 1978 - 1982

edges to the centre of the weld and shall be broken by pulling or hammer blows at the centre or one end. The test shall be accepted if the exposed surface shows not more than:

a) one gas pocket for nominal wall thickness of 6.3 mm and less,

b) two gas pockets for nominal wall thickness of 12.70 mm or less but greater than 6.3 mm, and

c) three gas pockets for nominal wall thickness greater than 1270 mm.

B-4. REPAIR-WELDER PERFORMANCE TESTS

B-4.1 Repair-welders performance t&s arerequired ‘on two specimens from each test of every grade, except that a welder qualified on one grade is also qualified for any lower grade. If either of the two specimens fail to conform to the requirements specified, four re-tests shall be required, if made immediately or two re-tests shall be required if the welder takes further instructions in the practice before making a re-test.‘ All re-tests shall conform to the requirements specified. Further performance tests are required at a minimum of l-year intervals; and also if the repair welder is not engaged in the tested repair welding procedure for a period of three months or more, or if there is some specific reason to question his ability. Both of the following tests sball be made:

a) Transverse guided bend test-as specified in B-2.4,

b) Nick-break test - as specified in B-3.

APPENDIX C

( Clause 10.1 )

SPECIFICATION OF WELDED JOINTERS

C-l METHOD

C-l.1 Welding of any type generally recognized as sound practice shall be permitted except when a particular method is specified by the purchaser.

C-2. WORKMANSHIP

C-2.1 The ends of the pipe to be welded together shall be prepared in accordance with the requirements of the process used. The completed jointers shall be straight within limits recognized by this speciEcation.

61

IS : 1978 - 1982

C-2.1.1 Ail jointers shall be marked so as to identify the respective welders. Each weld shall have a substantially uniform cross-section around the entire circumference of the pipe. At no point shall its crowned surface be below the outside surface of the parent metal nor shall it rise above the later by more than 1.6 mm.

C-3. HYDROSTATIC TESTS

C-3.1 Hydrostatic tests shall be made in accordance with the provisions of 11.5 except that hammer blows shall be struck near the jointer weld instead of near ends of jointers. These hammer blows shall be struck on seamless as well as on welded pipes. Minor sweats or leaks which develop in welds during the hydrostatic test may be repaired by welding after complete removal of the defective weld area by chipping. Such jointers shall again be subjected to hydrostatic tests.

C-4. TENSILE TEST

C-4.1 Longitudinal tensile tests of jointer welds shall be made with the procedure similar to that specified earlier except that, whenever possible, the test specimen shall be a full cross-section sample with the weld at the centre. Otherwise, a strip specimen of the required size shall be taken at right angles to the weld between jointers with the finished weld at the centre at the specimen. Test specimens from welded pipe shall not be taken nearer than 90” to the longitudinal weld. The number of such tensile tests shall be one for each lot of 50 jointers or less, but not less than one for each welder. All tensile test specimens shall be tested with the pipe and weld at room temperature. Each weld shall develop the full minimum tensile strength specified for the pipe.

C-5. BEND TEST

C-5.1 Two guided bend tests one face and one root, shall be made on specimens cut from the jointers weld of one length of the pipe from each lot of 50 jointers or less of each size. Specimens shall be prepared in accordance with Fig. 11 and shall be bent approximately 180” in a jig substantially in accordance with Fig. 4. The bend test shall be acceptable if no cracks or other defects exceeding 3.18 mm in any direction develop in the weld metal or between the weld and the pipe metal after bending. Cracks which originate along the edges of the specimen during testing and that are less than 6.30 mm, measured in any direction shall not be considered. Test specimens shall not include manual metal arc repair welds.

C-6. RE-TESTS

Cd.1 If any test specimen fails to conform to the requirements specified, i the manufacturer may elect to make the specified tests on two additional

62

Is :1978-1982

jointers from the same lot by the same welder. Re-tests are required Only for the test with which the specimen did not comply originally. If_IfapY specimen on re-test fails to conform to the specified requirements, all JOIn- ters welded by the particular welder, in the lot under test. shall be rejected.

/--SAW CUT

All dimensions in millimetru.

FIG. 10 NICK BREAK ‘MT SPECIMEN

THESE EDGES MAY BE OXYGEN CUT ALSO BE MACHlNED

r WELDED PIPE JOINT

150 ------I

WELD REINFORCEMENT 5HALL BE REMOVED FLUSH WITH THE SURFACE OF THE SPECIMEN

FIG. 11 GUIJXD BEND SPECJMBN

63

Is:1978-l982

APPENDIX D

( Clause 11.1 )

ELONGATION TABLE, METRIC

Area A

mm’

(1) (2) (3) (4) (5) (6)

484 and greater

477 471 464 458 452

25.25 and greater

24.89.25;22 24-56-2487 24.23-24-54 23.90-242 1 23-55-23.88

18.95 and 12.62 and greater greater

38.5 36.0

l&67-18*92 12-45-12’60 38-O 36’0 l&44-1&64 12-29-12.42 38.0 36.0 l&16-18*42 12’12-12.27 38’0 36.0 17.93-18.14 1 l*96-12s09 38-O 35.5 17.65-1791 11*79-11.94 38.0 35.5

445 23.22-23.52 17.42-17.63 11.61-11.76 37.5 35.5 290 439 22.86-2P19 17*14-17.40 11.43.11.58 37.5 35.5 29.0 432 22.53-22.83 16.92-17.12 11.28-l 1.40 37.5 35.5 29.0 426 22.20-22.50 16.64-16.89 ll*lO-11.25 37.5 35-o 29.0 419 21.87-22.17 16-41-16°61 10-95-l I.07 37.0 35.0 28.5

413 21.51-21’84 16.13-16.38 10’77-10.92 37.0 35’0 28.5 406 21*18-21.49 15*90-16’10 10’59-10.74 37.0 35.0 28.5 400 20#83-21.16 15.62-15.88 10*41-IO.57 37.0 35’0 28.5 393 20.50-20-80 15-39-15.60 10*26-IO.39 36.5 34.5 387 2@17-20:47

285 15.1 l-15-37 10*08-10.24 36.5 34.5 28.5

381 1984-20.14 14*88-15.09 9.93-10.06 36.5 345 28.0 374 194%19.81 lC60-14.86 9.75. 9.91 36.5 34.5 28.0 368 19’15-19.46 l&3&1&58 g-58- 9.73 36.0 34’0 28.0 361 [email protected] 14*10-1435 9.40- 9.55 36.0 34.0 28-o 355 18.47-18.77 13.87-14.07 9*25- 937 36-o 3*0 28-o

348 18*14-18.4s 13.59-13.84 9*07- 9.22 36’0 34.0 27.5 342 17*81-l&11 13-36-13.56 a-92- 9.04 35.5 33.5 27.5 335 17-45-17.78 13*08-13.34 a-74- 8.89 35.5 33-5 27.5 329 17.12-17.42 12.85-13.06 &56- 8.71 35.5 33.5 27.5 322 16.76-17.09 12’57-12’83 8*38- 8.53 35.5 33.5 27.0

316 16.43-l 6’74 12.34-12.55 a-23- 8.36 35-o 33.0 27.0 310 16*10-16.41 12.06-12.32 8.05- 8.20 35.0 33.0 27.0 303 15.77-16.08 1 l-84-12*04 7*90- 8.03 35.0 33.0 27.0 ! 297 15.42-l 5.75 11*56-11.81 7.72- 7.87 34.5 33.0 27-O 290 15.09-15.39 11’33-11.53 7*54- 7.70 34.5 32.5 26.5 1

TENCULB Tsn SPSCIMEN ELONOATION IN 50*80mm ~-----._L-.--_~

Specified Wall Thickness MXNIMW, PERCENT

#------*--__-~ - -A-----_ Specified Tensile Strength, Mpa

19.05 mm Specimen

25.4 mm Specimen

3&l mm _-_--.A_-,---., Specimen Grade Grade Grade .

YSt 170 YSt 210 Yst 240

64

(7)

29-5

29.5 29.5 29.5 290 29-o

( Continued ) !

IS .: 1978 - 1982

ELONGATION TABLE, METRIC - Contd

Area A

mm’

TENSILE TEST SPECIMEN ELONOATION IN 50.80 mm r-------_*_____ MINIYIJM, PERCENT

Specified Wall Thickness ~___~_~~~ _-_---- A--P--- Specified Tensile Strength, Mpa ’ 19.05 mm

Specimen

(1) 284 277 271

2265:

252 245 239 232 226

219 213 206 200 194

187 181 174 168 161

155 148 142 135 129

123 116 110 103 97

:9

:: 65

z: 45

;2”

26 19 13

(2) 14.73-l 5.06 14’40-1471 14.07-14.38 13.74-1405 13.39-13.72

13.06-1636 12-70-13-03 12.37-12.67 12.04.12.34

6 and less

11~71-12~01

11.35-I 1.68

048 and less

11.02-l 1.33 10.67-11’00 10.34-I 0.64 lO*Ol-10-31

9*68- 9.98 9*32- 9.65 &99- 9.30 8.64. 8.97 8*31- 8.61

7*98- .&28 7.65- 7.95 ?29- 7.62 6*96- 7.26 6*60- 6.93

6*27- 6.58 5*94- 6’25 5*61- 5.92 5*26- 5.59 &93- 5.23

&57- 4.90 4.24- 4.55 3.91- 4.22 3*58- 3.89 3.23- 3.56

Z-90- 3.20 2’54- 2’87 2’21- 2.51 l-88- 2.18 l-55- 1.85

1*19- 1.52 O-86- I.17 @51- 0.84

25.4 mm Specimen

38.1 mm ’ Specimen ‘Grade

YSt 170

(5) 34-s 34-5 340 34’0 34.0

33-5 33.5 33.0 33.0 33.0

32’5 32’5 32-5 32’0 32’0

31.5 31.5 31.0 31.0 30.5

30.5 30.0 30.0 29.5 29.5

29-o 29.0 28.5 28-O 275

27.5 27-O 26.5 26.0 25.5

25’0 24.5 24.0 23-O 22.5

21.5 20.0 18-5

Grade YSt 210

(6) 325 32.5 32.0 32’0 32.0

31.5 31.5 31.5 31.0 31.0

31.0 3Q.5 30.5 30.5 30.0

30.0 29.5 29.5 290 29.0 . 29-o 28.5 28.5 28.0 27.5

27.5 27.0 27.0 26.5 26.0

26.0 25.5 25.0 24.5 24.0

23.5 23.0 22.5 22-o 21.0

20.0 19.0 17-5 15’0

Grade YSt 240

(7) 26.5 26-5 26.5 26.0 26-O

26.0 26.0 25.5 25.5 25.5

25.0 25.0 25.0 25.0 24-5

24-5 24.5 240 24.0 23.5

23.5 23.5 23.0

EC .

22.5 220 22.0 21.5 21.5

21.0 21.0 20.5 20-o 19.5

19.5 19.0 18.5 18.0 17.0

16.5 15.5 14.5 12.5

(3) I l-05.1 1.30 [email protected] 10*54-10.80 10.31.10.52 10.03-10.29

9*80-10.01 9*52- 9.78 9*30- 9.50 g-02- 9.27 8*79- 8.99

8.51. 8.76 8*28- 8’48 8.OO- 8.26 7*77- 7.98 7*49- I.75

7*26- 7.47 6.98- 7.24 6.76. 6-96 6.48- 6.73 6*25- 6.45

5.97- 6.22 5.74- 5.94 5*46- 5.72 ?23- 5.44 4*95- 5.21

4,72- 4.93 4.44- 4-70 4,22- 4.42 3.94. 4.19 3.71- 3.91

3.43- 3.68 3*20- 3.40 2*92- 3.18 2*69- 2.90 2.41. 2.67

Z-18- 2.39 1*90- 2.16 1*68- 1.88 l-40- 1.65 1*17- 1.37

O-89- 1.14 0.66- 0.86

0’36 and less 0*38- 0.64

(4) 737-7.52 7.21-7.34 7-04-7-19 6*88-7.01 6-71-6’86

6.53.6.68 6.30-6’50 6.20-6.32 6.02-6 I 7 5.87-5.99

5-69-5.84 5.51-5.66 5’33-5’49 5.18-5.31 5.00.5.16

4.85-4.98 467-483 450.465 4-32-4-47 417-4.29

3.99-k 14 3’84-3.96 3’66-3.81 3.48-3.63 3-30-3.45

3.15-328 2;97-3.12 2.82-2.95 2.64-Z-79 246-2.62

2’31-2.44 2-13-2.29 l-96-2.1 1 yy-y$ . *_.

;-“;;-yg

1*12:1:24 0~94-1~09 0*79-0.91

O-61-0.76 0.43-0.58 0.25-0.41 @23 and less 16-O

65

IS : 1978 - 1983

APPENDIX E ( Clause 11.4.1 )

GUIDED-BEND TEST JIG DIMENSIONS

OIJTBIDB DIAMETER WALL THICINESS, t DIMENIIIONS, A mm mm r------__- -----7


(31 (4) (1) (2)

300 4.37 4-78 5.56 6.35 7-14 7.92 8-38 8.74 952

11-13 12.70 14-27 15.88 17-48 19’05 20.62 22.22

350

400

4-78 5.16 6.35 7.14 7.92 8-74 9.52

11.13

:::;s 15.88 17.48 19’05 20’62 22.22 23-83

4-78 5.16 5.56 6-35 7.14 7.92

25.4 35.6 30.5 35.6 35.6 40.6 4R.3 55.9 55.9 55.9 66’0 78.7 940

III.8 132-l 157.5 188.0 223.5 266.7

30-5 30.5 40.6 48.3 4&3 55.9 66.0 78.7 k

40.6 55-9 55.9 66.0 78.7 78.7 78.7

Ill.8 132*1 157-5 188.0 223.5 266.7 320-O 383*.5

35-6

z-i 55-9 66-O 78.7 78.7 94.0

94-o 152.1 Ill-8 157-5 132.1 188-O 157.5 223.5 157.5 223.5 18&O 266-7 223.5 320-O 266.7 383-5

30.5 35’6

30.5 35.6 z-i? 40.6 48.3 39” . 55.9

66-O

66

GUIDED-BEND TEST JIG DIMENSIONS - Conrd

OUTSIDE DIAYHTBR WALL THICKNESI, t mm mm

(1)

400

(2)

a.74 9.52

11.13 12.70 1427 15.88 1748 19.05 20.62 22.22 23.83 25.40 26.97 28.58

450 478 5.56 635 7.14 7.92 874 9-52

11.13 12.70 14.27 15.88 I 748 14.05 20.62 22.22 23.83 25.40 26.97 28.58 30.15 31.75

500 5.56 6.35 7.14 7.92 a.74 952

Ii.13 12.77 14.27

IS : 1978 - 1981

DIMENSIONS, A c- ---*--~~

Grade Grade YSt 170 Yst 210

(3) (4)

55.9 66.0 66.0 78’7 78.7 94.0 940

111.8 :::z 111.8 157.9 131.1 188.0

157.5 188.0 22%

E8 266.7 320.0 266 7 383.5 266.7 459.7 320.0 551.2

25.4 35.6

35.6 40.6 :g g.i 66.0 55.9

66-O 55.9 78.7 78.7 78.7 16.: 94.0 132’1

::::: 157.5 188.0 157.5 18&O 157.5 2235 188.0 266.7 223.5 320.0

223.5 266.7 ~%i . 266.7 459.7 320.0 459.7 383.5 551.2

30.5 4&6 z.3” 40.6 55.9 4a.3 55.9 559

;: .

66.0 78.7 1%: 94.0 132.1

( Conrinurd)

67

IS : 1978 - 1982

GUIDED-BEND TEST JIG DIMENSIONS - Canrd

OUTBIDE DIAMETER WALL THICKNESS, t mm mm c

(1) (2)

500 15’88 17.48 1905 20.62 22.22 23.83 25’40 26.97 2858 30-18 31.75

xs:::

550 f-3;

.

7.92 8.74 9-52

Il.13

:2:‘: 1588 17-48 1%05

600

%I.62

%2ei: 25-40 25-97 28.58 30.15 31.75 32-32

xg; . 38.10

6-35 7.14 7-92 8-74 9-52

11~13 12.70

DIMBWXIONII, 4 ---L -----

Grade Grade YSt 170 Y.st 210

(3) (4)

111.8 157.5 132-l 157.5 132-l 188-O 157.5 223.5 1880 223-5 188.0 266.7

E 320-O 320.0

266.7 383.5 226-7 320.0 E: 320-O 551.2 383-5 5511

30-5 40.6 35.6 40.6 E-9” 489 66-O 55-9 66-O 5!P9 78’7 66.0 94.0 78-7 111.8

1E 132-l 132-l

132.1 157.5 132-l 188.0 1575 188-O 157-5 223.5 188.0 188.0 f% 223.5 320-O 266.7 320.0 266-7 383-5 320.0 459.7 320.0 459.7 320-o 551.2 383.5 551.2 383.5 564.2

35-6 48-3 z.3” 55-9 55-9

55.9 68.0 55.9 78-7 E . 111.8 940

68

tS : 1978 - 1982

GUIDED-BEND TEST JIG DIMENSWNS - Conrd

Or_mw~~ DIAMETER WALL THICKNESS, I DIUSIIOWS, A mm mm #---P-P,

Grade Grade Yst 170 YSt 210

a1 (2) @I (41

600 1427 15.88 17.48 19.05 20.62 22.22 23.83

s::;; 28.58 30.18 31.75 33.32 3492 36.53 38.10 39.67

650

94-O iii.8 111.8 132’1 157.5

111.8 132.1 15P5 18&O 188.0

15P5 22.P5 18&O 223.5 188.0 266.7

2235 223.5 “3;::

Et:: 383.5 383.5 520.0 -4597 320.0 459.7 383.5 383.5 % .

383.5 5642

6.35 356 7.14 40.6 7.92 48.3 a.74 55.9 9.52 55.9

11’13 6&O 12.70 78.7 1427

15.88

94.0,

17.48 ::Z;f 1905 1321 20.62 132.1

ZE 157.5 188.0 25.40 188*0

48.3 57.9 55.9

EZ

E8 111.8 132’1 157.5 157.5 18&O 223.5 22S.5 266.7

6.35 7.14 7.92 9.52

11.13

:z 15.88 17.48 19.05 20.62

483 48.3 40’6 55.9

z: E 66.0 94.0 78.7 94.0 94.0 111.8 94.0 132.1

111.8 157.5 132.1 1575 132.1 18&O

69

IS:1978-1982

GUIDED-BEND TEST JIG DIMENSIONS - Cmtd

OUTIIDE DIAMTJSR WALL THICXZV~,- t DIMEIWONS, A mm mm -- --- ,

Grade YSt 170

Gmdt Yst 210

(1) (2)

700 22.22 1575 186.0 23.83 157.5 223-5 25.40 188-O 266.7

750 635 7.14 792 9-52

11’13 12’70 14-27 15-88 17.48 1905 20-62 22.22 23+3 2!b40

800

850

e35 7.14 7-92 9-52

11.13

:z 15-48 1744 19-05 @-l-62 22.22 23.83 25.40 26-98 28.10 29.29 30.54

615 7’14 7.92 9.5i

11.13 12.70 14-27 15.88

(3) (4)

35.6 40’6

z:i:

KG 94:o 94’0

111-8 132-l 135.1 157-5 157.5 188-O

48-s 55’9 55-9 66.0 78.7 94-o

111.8 132.1 157.5 157.5 188.0 1wo 223.5 223.5

35’6 40.6 48’3 55.9 66.0 78.7 94’0 94.0

Ill-8 132.1 132-l 157.5 157.5 188.0 188-O 223.5 223.5 223.5

132-l 157.5 188-O 188-o 223.5 223.5 266.7 266.7 320-O 320.0

35.6 48.3 40.6 55.9 48.3 55.9 55.9 66’0 66.0 m-7 78.7 94-o 54.0 111-8 94-o 132.1

70

( Continued )

IS : 1978 - 198t

GUIDED-BEND TEST JIG DIMENSIONS - Contd

OUTSIDE DIAMZTER WALL THICKNESS, I DZYLNSIONI, A

(1)

850

900

950

mm

(3) (41

17.48 19.05 20.62 22.22 23.83

%:“9i 28-10 29.29 30.54

111.8 132’1 132-l 157.5 157.5 188.0 188-O 188.0 223.5 223.5

6.35 7.14 7.92 9.52

11.13

:z 15’88 17-48 19-05

E22 23-83 25.40 26.98 28-10 29-29 SO.54

35.6 40.6 48.3 55.9 66-O 78.7

E 111.8 111.8 132.1 157.5 157.5 157.5 188-O 188.0 223.5 223.5

7.92 48-3 a-74 48.3 9-52 55.9

10.31 55.9 11.13 66-O t 1.91 66-O 12.70 78-7 14.27 78-7 15-88 94-o 17.48 111.8 19-05 111.8 20.62 132.1 22.22 132.1 23.83 157-l 25.40 157.1 26-98 188-O

~-----zc_ , Grade Grade

YSt 170 YSt 210

132’1 157.5 188.0 188-o

22% 266.7 266.7 266.7 3200

48-s 55.9 55.9 66.0 78.7 94-o

111.8 132-l 132.1 167.5 157’5 188.0

Ki 223.5 266.7 266.7 320-O

55-9 66-O 66-O 78-7 78.7 94-o 94.0

111.8 132.1 132’1 157.5 157.5 188-O 188-O

z5 -*. 2 <r’ ( Continued )

IS : 1978 - 1982

GUIDED-BEND TEST JIG DIMENSIONS - Cunfd

OUTSIDE Dxarrrmsa WALL THICKNEW, t DZMISNSZONS, A mm mm r__----A_-_-__~

Grade Grade YS1 170 YSt 210

(1) 12) (3) (4)

950

1000

1050

1100

28.10 188.0 266.7 2929 2285 226.7 30.54 223.5 320’0

7.92 8.74 9.52

10.31 11.13 11.91 12.70 14.27 15.88 17.48 19’05 20.62 22.22

EZ 26.98 28.10 29.29 30.54

48.3 48.3 55.9 55.9

z: 78.7 78.7 94.0

111.8 111.8 132.1 132.1 157.5 157.5 188.0 188’0 223.5 223.5

55.9 66.0 66’0 78.7 78.7 94.0 94.0

111.8 132’1 132.1 157.5 157.5 188.0 188.0 223.5 223.5 266.7 266.7 266.7

8.74 9.52

10.31 Il.13 11’91 12.70 14.27 15.88.

.I 7.48 19.05 20.62 22.22 23.83 25.40 26.98 28.10 29.29 30.54

E 55.9 66.0 66.0 78.7 78.7 94.0

111.8 111.8 132.1 132.1 157.5 157 5 18&O 188.0 188.0 223.5

66.0 660 78.7 78.7 94.0 94’0

111’8 132’1 132.1 157.5 157.5 188.0 188*0 223.5 223.5 266.7 266.7 266.7

8.74 48.3 66.0 9.52 55.9 6&O

10.31 55.9 78.7

72

IS : 1978 - 1982

GUIDE&BEND TEST JIG DIMENSIONS - Cored

1 150 8-74 952

lo-31

xi

z 15.88 17-48 1905

ES 23.83 25.40 26-98 28.10 29.29 30-54

1200 8-74 9-52

10.31 11-13 11-91 12.70 14.27 15.88 17-48 19.05 20-62

OUTSIDB DIAMETJSR W&L THICKNIQIS, t mm mm

(1) (2)

1 100 11.13 1191 12.70 1427 15.88 17.48 19.05 20.62 22.22 23.83 25.40 26.98 28.10 29.29 30-54

DINBNUONI, A r-r-- ~--_---_-


(3) (4)

660 78.7 66-O 94.0 78-7 94.0 78-7 111.8 94-o 132’1

Ill-8 132-l 111.8 157.5 132-l 1575 132-l 188.0 157.5 1880 1575 223.5 188.0 223.5

:ii:: f X’: 223.5 266:7

g; .

66.0 66.0 78-7 78-7 94-o

111.8 111.8 132’1 132’1 157.5 157.5

66-O 66.0 78.7 78.7 94.0 94-o

111.8 111.8 132’1 157.5 157-5 188.0 188.0 223.5

267.7 267.7

66-O 66.0 78-7 78.7 94-o 94.0

111.8 Ill.8 132-l 157.5 157.5

( Continued )

.

-. --....

IS z 1978 - 1982


OUTSKDE DIAMETER WALL THIUXEIS, t DIMENSIONS, A mm mm r----- -- ----------~


(1)

1 200

1 300

14QO

1500

(2)

22.22 132.1 188.0 23.83 157.5’ 188.0 25.40 157’5 123.5 26.98 157.5 223.5 28.10 188.0 223-5 29.29 188.0 266-7 30.54 223-5 2S6.7

9-52 IO.31 1 l-13 11.91

E 15m 17.48 19.05

z; 23-83 25.40 26-98 28.10 29-29 30-54

55.9 55.9 66-O 66.0 78.7 78.7 940

111.8 111.8 132-l 132.1 157.5 157-5 157.5 188-O 188’0 223.5

66.0 78.7 78.7 94-o 94-o

ill.8 111.8 132-l 157.5 157.5 188.0 188-O 188.0 223.5 223.5 266.7 266-7

9.52 10.31 Il.13 1 l-91 12.70 14-27 15.88 17.48 19.05 20.62 22.22 23.83 25.40 26.98 28-10 29.29 30.54

9.52 10.31

74

(3) (4)

55-9 55.9 66’0 66-O

78.7 78-7 94.0

111.8 111-a 132.1 132.1 157.5 157-5 157’5 188.0 188-O 188-O

55.9 55.9

66.0 78.7 78.7 94-o

E 111-8 132-l 157-5 157.5 188.0 188-O 188.0 223.5 223.5 266.7 266.7

66.0 78.7

( Continwd )

IS : 1978 - 1982


OUTSIDE DIAMETER WALL -THICKNESS, t DtMeNStONS, A mm mm

(1)

1 500

(2)

11.13

11.91

12.70

14.27

15.88

17.48

19-05

20.62

22-22

23.83

25.40

26.98

2810

29.29

30.54

1600 9.52 55.9 66-O

lo-31 55.9 78.7

II*13 66.0 7a-7

11.91 66.0 7&7

12’70 78.7 94.0

14-27 7a-7 111.8

was 94.0 111.8

17.48 94.0 132-l

19.05 iii-8 132.1

20.62 132-l 157.5

22.22 132-l 157.5

23.63 132-l 188.0

25-40 157.5 ia*0

26-98 157.5 223’5

28-10 188-O 223.5

29.29 la8-0 223.5 ’

3o-54 188’0 266-7

r-_-____h____--_--~


66.0 78.7

66.0 78.7

78.7 94.0

787 111.8

94.0 Ill.8

94-o 132.1

ill.8 132’1

132-l 157.5

132-l 157.5

132.1 188,O

157.5 188-O

157.5 223.5

188.0 223.5

la&o 266.7

ia*0 266.7

75

IS : 1978 - 1982

APPENDIX F

( CZause 12.1.1 )

~~~~DESTRUCTIVE INSPECTION OF SEAMLESS LINE PIPE

F-l; SUPPLEMENTARY NON-DESTRUCTIVE INSPECTION

F.l.l Seamless pipe shall be inspected full length for longitudinal imperfections by either magnetic particle inspection or by ultrasonic or electromagnetic methods. The location of the equipment in the mill shall be at the discretion of the manufacturer, however, the non-destructive inspection shall take place after all heat-treating and expansion operations, if performed, but may take place before cropping, bevelling and end sizing.

F-2. MAGNETIC PARTICLE INSPECTION

F-2.1 When magnetic a particle inspection is employed to inspect for longitudinal imperfections, the entire outside surface shall be inspected. The depth of all imperfections revealed by magnetic particle inspection shall be determined. Imperfections revealed by magnetic particle inspection and determined to be greater in depth than 125 percent of the specified wall thickness shall be classified as defects and given one of the dispositions specified in 8.6.

F;3. ULTRASONIC OR ELECTROMAGNETIC INSPECTION

F-3.1 Equipment - Any equipment utilising the ultrasonic or electromagnetic principles and capable of continuous and uninterrupted inspection of the entire outer surface of the pipe or tube may be used. The equipment shall be of sufficient sensitivity to indicate defects and shall be checked as prescribed in F-3.2.

F-3.2 Reference Standards - A reference standard having the same nominal diameter and thickness as the product being inspected shall be used to demonstrate the effectiveness of the inspection equipment and procedures at least once every working turn. The reference standard may be of any convenient length as determined by the manufacturer. It shall be scanned by the inspection unit in a manner simulating the inspection of the product. For ultrasonic inspection, the reference standard shall contain a machined notch as specified in Fig. 12. For electromagnetic inspection, the reference standard shall contain either a machined notch as specified in Fig. 12 or a 3.2 mm drilled hole. The notch shall be in the outer surface of the reference standard and parallel to the longitudinal axis of the pipe or, at the option of the manufacturer, may be oriented at such an angle as to optimize the

76

I6 : 1978 - 1982

detection of anticipated imperfections. The 3.2 mm hole shall be drilled 1: radially through the wall of the reference standard. The inspection equipment shall he adjusted to produce a wall-defined indication when the reference standard is scanned by the inspection unit.

Depth of notch, h shall be 12.5 percent bf the nominal wall thickness of the pipe being inspected, but not less than 0.30 mm.

For ultrasonic and eddy current the length of notch at full depth, L, shall be at least twice the width of the scanning head.

For diverted flux the length of notch shall be as required by the equipment design to provide a reproducible signal when the reference standard is passed through the equipment at the inspection line speed for the pipe being inspected. Three PC&es through the equipment shall be required to insure reproducibility.

+I+ E$J-

NOTCH 3.2mm NOM

T ORILLEO HOLE

FIG. 12 REFERENCE STANDARD

F-3.3 Acceptance Limits - Any imperfection that produces a singal greater than the singal received from the reference standard shall be considered a defect unless it can be demonstrated by the manufacturer that the imperfection does not exceed the provision of 8.6. Pipe containing defects shall be given one of the dispositions specified in 8.6.

NOTE 1 - The reference standards defined above are convenient standards for cali- bration of non-destructive testing equipment. The dimensions of these standards should not be construed as the minimum size imperfection detectable by such equipment.

NOTE 2 -Reference standards other than the specific notch described above may be used by agreement between the purchaser and the manufacturer.

F-4. MARKING

F-4.1 Pipe non-destructively inspected in accordance with this requirement shall be suitably marked.

77

IS : 1978 - 1982

( Continued from pogd 2 )

Members R@rwnting

SARI D. Durra Indian Tube Co Ltd, Jamshedpur SHRI R. K. GIJPTA ( Altemute)

SHRI v. JlrUANATNAN Hindustan Petroleum Corporation Ltd, Visakhapatnam

SHRI ASHOK TANDON ( Ahnatc) SHHI 0. P. KAXKAR The In&an Seamless Metals Tubes Ltd, Bombay

SHRI N. CHANDRA ( Ahnate ) DR A. R. KES~AR Zenith Steel Pipes and industries Ltd, Khopoli

SHRI P. D. MAHAJAN Oil India Ltd, Calcutta SHRI L.C. BARUA ( Altematu)

SHRI E. SWBA RAO Indian Oil Corporation Ltd, Bombay SHRI B. K. SRIVASTAVA (Al&mute)

REPRESENTATIVE Steel Authority of India Ltd (Rourkela Steel Plant), Rourkela

SWRI H. J. THAKER Gujarat Steel Tubes Ltd, Ahmadabad

.

; ’ -: .,. I’

,

BUREAU OF INDIAN STANDARDS

Headquarters: Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 Telephones: 323 0131,323 3375,‘323 9402 Fax : 91 11 3234062,91 11 3239399.91 11 3239382

Telegrams : Manaksanstha (Common to all Offices)

Central Laboratory: Telephone

Plot No. 20/9, Site IV, Sahibabad Industrial Area, Sahibabad 201010 0-77 09 32

Regional Offices:

Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg, NEW DELHI 110002 323 76 17

*Eastern : l/14 CIT SchemeVII M, V.I.P. Road, Maniktola, CALCUTTA 700054 337 86 62

Northern : SC0 335336, Sector 34-A, CHANDIGARH 160022 60 38 43

Southern : C.I.T. Campus, IV Cross Road, CHENNAI 600113 235 23 15

TWestern : Manakalaya, E9, Behind Marol Telephone Exchange, Andheri (East), 832 92 95 MUMBAI 400093

Branch Offices:

‘Pushpak’, Nurmohamed Shaikh Marg, Khanpur, AHMEDABAD 380001 550 13 48

* Peenya Industrial Area, 1st Stage, Bangalore-Tumkur Road, 839 49 55 BANGALORE 560058

Gangotri Complex, 5th Floor, Bhadbhada Road, T.T. Nagar, BHOPAL 462003 55 40 21

Plot No. 62-63, Unit VI, Ganga Nagar, BHUBANESHWAR 751001 40 36 27

Kalaikathir Buildings, 670 Avinashi Road, COIMBATORE 641037 21 01 41

Plot No. 43, Sector 16 A. Mathura Road, FARIDABAD 121001 8-28 88 01

Savitri Complex, 116 G.T. Road, GHAZIABAD 201001 8-71 19 96

53/5 Ward No:29, R.G. Barua Road, 5th By-lane, GUWAHATI 791003 541137

5-8-56C, L.N. Gupta Marg, Nampally Station Road, HYDERABAD 500001 20 10 83

E-52, Chitaranjan Marg, C-Scheme, JAIPUR 302001 37 29 25

1171418 B, Sarvodaya Nagar, KANPUR 208005 21 68 76

Seth Bhawan, 2nd Floor, Behind Leela Cinema, Naval Kishore Road, LUCKNOW 226001

23.89 23

NIT Building, Second Floor, Gokulpat Market, NAGPUR 440010 52 51 71

Patliputra Industrial Estate, PATNA 800013 26 23 05

Institution of Engineers (India) Building 1332 Shivaji Nagar, PUNE 411005 32 36 35

T.C. No. 14/1421, University P.O. Palayam, THIRUVANANTHAPURAM 695034 621 17

*Sales Office is at 5 Chowringhee Approach, PO. Princep Street, 27 10 85 CALCUTTA 700072

TSales Office is at Novelty Chambers, Grant Road, MUMBAI 400007

*Sales Offlce is at ‘F’ Block, Unity Building, Narashimaraja Square, BANGALORE 560002

309 65 28

222 39 71

Printed at Simco Printing Press. Delhi

AMENDMRNT NO. i hO%%tiBER 1987 TO

IS t I!)78 - l982 SPECIFICATION FOR LINE PIPE

( Second Ret&ion)

&( Page 6, claus 6.1 ) - Substitute the following for the cxlsting :

‘%J Ladk Adysh - The ladle adysis of the steel fir different grades shall conforta to the following:

Grade Ladle And*, Pmmt r------ ------------7

Carbon Manganese Phosphorus IUIU

%?----

Su&hz F---A_

Max Min Max

YSt 170 class I 021 0.30 060 0 06 - 0645

YSt 170 class II 0*21 030 660 0% 0645 Cl.080

YSt 210 022 - 090 0.05 - 0.04

YSt 240 0.27 - 1.15 0.05 - 064

NOTE - Clau( II ) steel is rc-phoaphorized and ir beneficial for threadnut operations.

6.1.1 The lade analysis of steel shall be carried out either by the method specifiedln IS : 228 ‘Methods for chemical analysis of steels and its relevant partror any other established instrumental/chemical method. In case of dispuk the procedure gi\ en in IS : 228 and its relevant parts shall be refree method. However, where the method is not given in IS : 2’28 andits relevant parts, the referee method shall be agreed to between the plrchascr and the manufacturer.”

( Page 6 claw 63.1~) - Substitute ‘ 64.2 ‘for ‘ 6.1.1 ‘.

(SMDC22’

RbCd *-8hnco Printing Proor, Delhi, India

AMENDMENT

-A

NO. 2 MARCH 2003To

IS 1978:1982 SPECIFICATION FOR LINE PIPES

( Second Reviswn )

( Page 14, Table 2, for Nominal Size 250 mm and Wall thickness 6.4 mm )— Substitute ‘42.09’ for ‘52.09’ in cohmn 4.

( MTD 19)Reprography [Jnit, [31S, New Delhi, India

. .,

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