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“Step Out From the Old to the New”

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“The Right to Information, The Right to Live”

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“Knowledge is such a treasure which cannot be stolen”

“Invent a New India Using Knowledge”

है”ह”ह

IS 2762 (2009): Wire Rope Slings and Sling Legs [MED 10:Wire Ropes and Wire Products]

July 2009

IS 2762 : 2009

CfT<:R m ft-c;R:r ~ ~~ - ~

( Ci'!-NI ~erur )

Indian Standard

WIRE ROPE SLINGS AND SLING LEGS ­SPECIFICATION

( Second Revision)

ICS 53.020.30; 77.140 .65

© BIS 2009

BUREAU OF INDIAN STANDARDSMANAK BHA VAN. 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

Price Group 7

Wire Ropes and Wire Products Sectional Committee, MED 10

FOREWORD

This Indian Standard (Second Revision) was adopted by the Bureau oflndian Standards, after the draft finalizedby the Wire Ropes and Wire Products Sectional Committee had been approved by the Mechanical EngineeringDivision Council.

This standard was first published in 1964 and revised in 1982. The experience gained in the implementation ofthe first revision and the prevailing practices in the industry necessitated the present revision.

Safe working load at different methods of loading is given in Annex A. Guidelines for use of slings is given inAnnex B. Discard criteria is given in Annex C.

The composition of Committee responsible for the formulation of this standard is given in Annex D.

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 : 1960'Rules for rounding off numerical values (revised)'. The number of significant places retained in the rounded offvalue should be the same as that of the specified value in this standard.

IS 2762 : 2009

Indian Standard

WIRE ROPESLINGS AND SLINGLEGS ­SPECIFICATION

( Second Revision )

1 SCOPE 3 GENERAL REQUIREMENTS

2 REFERENCES

NOT!,! - The guidelines for use of slings and the discardcriteria for slings have been included in Annex B and AnnexC respectively.

The following standards contain provisions, whichthrough reference in this text, constitute provisionsof this standard. At the time of publication, theeditions indicated were valid . All standards aresubject to revision, and parties to agreements basedon this standard are encouraged to investigate thepossibility of applying the most recent editions ofthe standards indicated below:

This standard specifies dimensions, construction, methodof loading, testing, marking and certification of one-,two-, three and four-leg slings of wire rope of nominaldiameters from 6 mm to 60 mm of the following typeswith hand or mechanically spliced eye termination:

a) Single part sling,

b) Double part endless sling, and

c) Double part grommet sling.

3.1 Type of Rope

The type of rope to be used shall be a six stranded fibreor steel core or eight stranded steel core, ordinary lay,rope grade 1770 as specified in IS 2266. Use of higherrope grade is permitted but the safe working load shallbe calculated on the basis of rope grade of 1770 only.

NOTE - The safe working load of the sling used in specialapplication. however can be calculated on the basis of actualrope grade and construction with the agreement betweenthe manufacturer and the user.

NOTE - Use of other types of ferrule is permitted asagreed to between the purchaser and the manufacturer.

3.2 Formation of Eyes

Eyes of sling legs shall be formed by using handsplicing or mechanical splicing using ferrulesconforming to IS 10942. Such eyes shall be soft eyesor reinforced with thimbles as per the requirement.

3.2.1 Soft Eyes

The length of the soft eye shall be minimum twelvetimes the rope diameter unless otherwise specified.The width of the eye shall be approximately half ofits length. In order to protect the bearing surface ofthe soft eye, a stirrup may be fitted. The bearing pointover which the soft eye used shall be more than twicethe rope diameter for single part sling and four timesthe rope diameter in case of endless type sling.

3.2.2 Eyes Reinforced with Thimble

These thimbles shall be of galvanized ordinary,reeving or solid type appropriate for the size of ropeused, conforming to IS 2315.

3.2.3 Hooks

Eye hooks shall be of mild steel conforming to IS 2758or of high tensile steel conforming to IS 2759.

3.2.3.1 The safe working load of the hook shall not beless than that of the leg to which it is attached .

3.3 Master Links (Rings)

Steel rings shall conform to IS 2760.

TItle

Carbon steel billets, blooms, slabsand bars for forgings (fifth revision)Steel wire ropes for generalengineering purposesSpecification (fourth revision)Specification for thimbles for wireropes (first revision)Mild steel point hooks for use withwire rope thimblesHigher tensile steel point hooks foruse with wire rope thimblesSpecification for steel chain slings(first revision)Methods for splicing of wire ropes:Hand splicing of wire ropesWin: rope sling legs with ferrule­secured eye terminalsFenules - Specification (firstrevision)Quality management system ­Requirements

2758: 1969

IS No.

1875 : 1992

2266 : 2002

2315 : 1978

2759: 1969

2760: 1980

5245(part I) : 1969(Part 2) : 1971

10942: 2000ISIISO 900 I :

2000

IS 2762 : 2009

3.3.1 Mild Steel Rings

Mild steel rings shall be made from steel of Class. l A,Designation 2OC8 of IS 1875. The rings ~ay be elt~er

weld less or welded. When welded, the mild steel nngshall be made by one of the following methods:

a) Electrical resistance butt

weldingb) Rash-butt welding Suitable for

c) Atomic hydrogen welding sizes above

d) Inert-gas shielded-arc 50mmwelding diameter

e) Submerged arc welding

f) Covered electrode welding

The rings shall be smoothly finished all round, and ifthey are welded, care shall be taken to avoid porosityand to ensure penetration and fusion throughout. Wheninspection by radiography is required by the purchaser,this shall be specified at the time of enquiry and order.The mild steel rings shall be normalized by heatinguniformly in a furnace until the whole of the metal hasattained a temperature between 880°C and 910°C. Therings shall then be withdrawn from the furnace andallowed to cool in still air. In all other respects , themild steel rings shall comply with the requirementsspecified in IS 2760 .

3.3.2 High Tensile Steel Rings

High tensile steel rings shall comply with IS 2760. Thedimensions of master links (rings) can be calculatedusing formulae as given in Annex A.

3.3.3 The main and intermediate rings shall withstandthe respective rated safe working load for the sling legs.

4 SINGLE PART SLING

A sling that has been made with only one part of ropeis called a single part sling.

4.1 Minimum Length

To provide adequate flexibility and to allow splicing,the effective length of a single part sling shall not beless than 70 times the rope diameter. The actual lengthof a sling shall not differ from the nominal length bymore than two rope diameters or I percent of thenominal length whichever is greater, The measurementshall be taken without applying any load.

4.1.1 Length ofMatched Sets

The difference in length of matched sets of mechanicallyspliced slings shall not exceed the rope diameter or 0.5percent of the nominal length, whichever is greater. Thedifference in length of matched sets of hand splicedslings shall not exceed twice the rope diameter or Ipercent of the nominal length whichever is greater.

2

4.2 Fabrication

4.2.1 Hand Splicing

Hand splicing shall be done as per IS 5245 (Part I). Eachhand splice shall have at least five tucks - three tuckswith full strand of the rope and two tucks with the strandafter removing half the number of wires from the innerlayer. The tucks shall be over and under against the layof the rope. The splice shall be tightly drawn and madeneatly. The approximate length of five tuck spliceexclusive of the thimble is 20 times the diameter of therope. The portion of the hand splicing which containsthe wire ends shall be served neatly and effectively withspun yarn or seizing wire or strand to extend protectionto injury during usc. Alternatively, when required by thepurchaser, the full length of the splice may be served.

4.2.2 Mechanical Splicing

The splicing may also be done by mechanical meansor swaging as required by the purchaser. Mechanicalsplicing shall be done as per IS 5245 (Part 2).

, 4.3 Safe Working Load

The safe working load (SWL) of a single part sling forstraight pull can be calculated as follows:

F xKSWL= ° I

9.80665 x Zp

where

Fo = minimum breaking force of the rope,

K, = splicing efficiency factor (0 .8 for handsplicing and 0.9 for mechanicalsplicing),

9.806 65 = constant for converting force unit (kN)to mass unit (tonne), and

zp = (5) Coefficient of utilization.

5 DOUBLE PART ENDLESS SLING

A sling that is made endless by splicing the ends andsubsequently folded to form double part sling .

5.1 Minimum Length

To prov ide adequate flexibility and to allow splicing,the effecti ve length of a double part endless sling shallbe not less than 70 times the diameter of the rope usingord inary thimble and 80 time s the diameter of the ropeusing reeving thimble. The length of an endless slingshall be taken to behalf the circumference of the circleformed on the centre line. The actual length of a slingshall not differ from the nominal length by more thantwo rope diameters or I percent of the nominal length ,

. whichever is greater. The measurement shall be takenwithout appl ying any load .

5.1.1 Length of Matched Sets

The difference in length of matched sets ofmechani cally spliced slings shall not exceed the ropediameter or 0 .5 percent of the nominal length .whichever is greater. The difference in length ofmatched sets of hand spliced slings shall not exceedtwice the rope diameter or I percent of the nominallength, whichever is greater.

5.2 Fabrication

5.2.1 Hand Splicing

5.2.1.1 The initial length of the straight rope shall beplaced overlapping two ends. The ends shall then bespliced at each side with a five tuck splice. making thecomplete splice ten tucks altogether. Hand splicing ateach side shall have five tucks - three tucks with fullstrand of the rope and two tucks with the strand afterremoving half the number of wires from the inner layer.

.The tucks shall be over and under against the lay ofthe rope. The splice shall be tightly drawn and madeneatly. The approximate length of a ten tuck splice is40 times the diameter of the rope .

5.2.1.2 At those portions of the hand spliced endlessrope which will seat in the thimble grooves, the singlepart of the rope shall be served with spun yarn to suitthe grooves in the oversize thimble and to provide afoundation for the throat seizing. The length of eachserving shall be such that in addition to the portion incontact with the thimble groove. it underlies andprojects three rope diameters beyond the throat seizing.

5.2.1.3 Those portions of the splice which contain thewire ends shall be neatly and effectively served withspun yarn or seizing wire/strand to extend protectionto injury during use. Alternatively. when required bythe purchaser the full length of the taper splicing zonemay be served.

5.2.1.4 The hand spliced endless rope shall have itstwo parts brought into parallel contact with the twoserved portions forming the bight at each end. Athimble shall be throat size close up to its point intoeach bight of the rope by means of a suitable annealedquality galvanized wire/strand. The overall length ofeach throat seizing shall not be less than six times thediameter of rope .

5.2.1.5 The seizing shall be tightly drawn and neatlymade, free from projections liable to cause injuryduring use. When the sling leg exceeds 100 times thediameter of the rope. a central seizing equal to threetimes the diameter of rope shall be provided. In caseof longer sl ing leg intermediate seizing of abovelength shall be provided at intervals not greater than72 times the rope diameter.

3

IS 2762 : 2009

NOTE - Unless specified otherwise. one end of the tenluck served spliced poinl shall remain adjacent but clear ofthe thimble . in the finished sling leg.

5.2.2 Mechanically Spliced

The splicing may also be done by mechanical meansor swaging as required by the purchaser.

5.3 Safe Working Load

The safe working load (SWL) of a double part endlesssling for straight pull can be calculated as follows:

2xF;, ««,SWL = ---''-----'­

9.80665 x z,

Fo = minimum breaking force of the rope,

K, = splicing efficiency factor (0.8 for handsplicing and 0 .9 for mechanicalsplicing).

9.806 65 = constant for converting force unit (kN)into mass unit (tonne) used in liftingapplication. and

zp = (5) Co-efficient of utilization.

6 DOUBLE PART GROMMET SLING

6.1 Wire Rope Grommet

Wire rope grommet is an endless wire rope made fromone continuous length of strand formed to make a bodycomposed of six strands around a strand core. Thestrand ends are tucked into the body forming the corewith the tuck position diametrically opposite to the corebutt position.

6.2 Minimum Length

To provide adequate flexibility the effective length ofa double part grommet sling shall not be less than 40times the diameter of the rope when using ordinarythimbles and not less than 50 times the diameter of therope when using reeving thimbles. The tolerance inlength of the grommet shall be ± 0.5 percent of thenominal circumferential length or ± 0.5 x d whicheveris greater (d = diameter of the single part of thegrommet). The measurement shall be taken withoutapplying any load .

6.3 Fabrication

6.3.1 Fabrication shall be done as per IS 5245 (Part I) .

6.3.2 The strand used to produce a wire rope grommetshall be one of those required to form a six strandedrope of a construction as described in IS 2266 in righthand ordinary lay. fibre main core with wires of tensiledesignation of 1770. During production of grommet atemporary rigid circular core shall be used over which

IS 2762 : 2009

the strand shall be laid side by side using a methodwhich ensures that the strand tensions are equalizedand the finished product is free from visible waviness.The grommet lay factor shall not be more than 8 timesthe nominal diameter of the rope. The crossing of thetucks shall be placed adjacent to, but clear of, onethimble and under the throat seizing in the finishedsling leg. Those portions of the grommet which wiIIseat in the thimble grooves, the single part of the ropeshall be served with spun yarn to suit the grooves inthe oversize thimbles and to provide foundation to thethroat seizing. The length of each serving shall be suchthat, in addition to the portion in contact with thethimble groove it underlines and projects three ropediameters beyond the throat seizing.

6.3.3 The finished grommet shall have its two partsbrought into parallel contact with the two servedportions forming the bight at each end. A thimble shallbe throat seized close up to its point into each bight ofthe rope by means of annealed quality galvanized wire/strand. The overall length of each throat seizing shallnot be less than six times the diameter of the rope. Theseizing shall be tightly drawn and neatly made freefrom projections liable to cause injury during use.When the sling leg exceeds 100 times the diameter ofthe rope a central seizing equal to three times thediameter of the rope shall be provided. In case of longersling legs, intermediate seizing of above length shallbe provided at intervals not greater than 72 times thediameter of the rope.

6.4 Safe Working Load

The safe working load (SWL) of a double part grommetsling for straight pull can be calculated as follows:

SWL= 2xFo xK.9.806 65x;

F0 = minimum breaking force of the unit ropewith fibre main core and wire tensileDesignation of 1770 whose strand isutilized in making the grommet,

K, = (0.80) Splicing efficiency factor,

9.806 65 = constant for converting force unit (kN)into mass unit (tonne) used in liftingapplication, and

Zp = (5) Coefficient of utilization.

7 SLINGASSEMBLIFS

7.1 The assembled slings shall be one of the formsshown in the Fig. 1 to 10.

7.2 ComponentsAttadunent

The components for all slings shall be spliced or

4

seized (as may be appropriate) directly to the slingleg, with the exception of four-leg slings, which shallcomprise two-leg assemblies complete withintermediate rings and a main ring. The welding andheat treatment of the rings shall be completed beforethe wire rope legs are attached.

7.3 Effective Length

The effective length of all slings and sling legs shallbe the length between the bearing points of theirterminal components like thimble, ring or hook unlessotherwise specified. The measurement shall be takenwithout applying any load. For multi-leg slings theactual individual leg lengths shall not differ from thenominal length of the sling by more than two ropediameters or I percent of the nominal length whicheveris greater. The difference in length between theindividual legs of any multi-leg sling shall notexceed 1.5 times the rope diameter or 0.5 percent ofthe nominal length whichever is greater.

8 TESTING

Before assembly all rings and hooks shall be tested toa proof load which is equivalent to twice the safeworking load. A sample of rope shall be testedaccording to IS 2266. After fabrication of sling, eachsling leg shall be tested to a proof force which isequivalent to twice its safe working load.

8..1 Extent of Manufacturing Proof Force Testing

The manufacturing tests shall depend on whether themanufacturer has an applicable quality managementsystem or not. The system shall comply with aninternationally acceptable standard like IS/ISO 9001and be certified by internationally accredited third partycertification body. If such system is in place andoperating, the test described in 7 shall be designatedas type test and shall be carried out by the slingmanufacturer as per their quality plan and shall bepresented to the customer or his representative forverification whenever required. Every non-standard orone-off sling assembly shall be tested in accordancewith 7.

9 METHOD OF LOADING

9.1 The safe working load for slings as given in 4.3, 5.3and 6.4 is for one sling under straight pull. Slingshowever can be utilized using different methods ofloading as described in Annex A. The safe workingload under each method of loading can be worked outusing the appropriate factor given in Annex A. Thesafe working load and the proof load for the masterring may also be calculated under different conditionsas given in 9.2 and 9.3.

9.2 After final heat treatment of the master ring andintermediate ring the slings with accessories shall betested as an assembly. Multi-leg wire rope slings shall,however, be tested in sections as given in Table I.

9.3 Proof Load

Proof load for the rope, master ring, intermediate ringand the complete assembly shall be equal to doubletheir respective safe working load for the angle ofapplication, as given in 9.2.

IS 2762 : 2009

10MARKING

10.1All slings shall be marked legibly on,

a) a durable metal label or a sleeve firmlyattached to the sling;

b) body of the ferrule (without causing anydamage); and

c) master link (ring).

with at least following information:

EFFECTIVELENGTH

1A 1B 1C

1A Single Part Sling1B Double Part Endless Sling1C Double Part Grommet Sling

FIG. lONE-LEG WIRE ROPE SUNGS WITHORDINARYTHIMBLES ATBOllI ENDS (HAND SPLICED)

5

'"

EFFECTIVELENGTH

EFFECTIVELENGTH

EFFECTIVELENGTH

til

~

~

2A 28 3A 38 3C 3D

2A Single Part Sling

28 Double Part Endless Sling3A Ordinary Thimble at One End

Reeving Thimble at Other End3B Reeving Thimbles at Both Ends

3C Ring at One End

Ordinary Thimble at Other End

3D Ring at One End, Hook at Other End

FIG. 2 ONE-LEG WIRE ROPE SLING WITH ORDINARY THIMBLES

AT BOTH ENDS (MECHANICALLY SPLICED)FIG. 3 ONE-LEG WIRE ROPE SLINGS

(HAND SPLICED)

EFFECTIVELENGTH

40

EFFECTIVELENGTH

4C48

EFFECTIVELENGTH

4A

....,

FIG. 4 ONE-LEG WIRE ROPE SLING

(MECHANICALLY SPLICED)

4A Ordinary Thimble at One EndReeving Thimble at Other End

48 Reeving Thimbles at Both Ends

4C Ring at One End, Ordinary Thimbleat Other End

40 Ring at One End, Hook at Other End

FIG. 5 Two-LEG WIRE ROPE SLINGS WITHMAIN RING AT ONE END,

HOOKS ATOrurn ENDS (HAND SPLICED)

r;;~~

§

EF"F'ECTIVELENGTH

~

fiJ

~

fCG~

00

FIG. 6 Two-LEO WIRE RoPE SUNG WITHMAIN RING

ATONE END. HOOKSAT0nmRENDs(MSCHANlCAU.Y SPUCED)

FIG. 7 THREE-LEG WIRE ROPE SLING WITH MAIN RING

ATONE END , HOOKS ATOTHER ENDS

(HAND SPLICED)

EFFECTIVELENGTH

\0

reG~

FlO. 8 THREE-LEG WIRE ROPE SLING WITH MAIN

RING ATONE END, HOOKS ATOrnER ENDS

(MECHANICALLY SPLICED)

FIG . 9 FOUR-LEG WIRE ROPE SLING WITH MAIN AND INTERMEDIATE

RINGS ATONE END, HOOKS ATOTHER ENDS

(HAND SPLICED)

rii~~

~

IS 1:162: 2009

FIG . 10FOUR-LEG WIRE ROPE SLING WITHMAIN AND INTERMEDIATE RINGS AT ONE END, HOOKS

AT OTHER ENDS (MECHANICAU.Y SPLICED)

i) unique reference number identifying thesling with its test certificate,

ii) the safe working load of the sling for singleleg sling or the safe working load(s) related tothe leg angle(s) in case of multi-leg sling, and

iii) month and year of manufacture.

10.2 DIS Certification Marking

Each sling may also bemarked with the Standard Mark.

10.2.1 The use of the Standard Mark is governed bythe provisions of the Bureau of Indian Standards Act,1986 and the Rules and Regulations made thereunder.The details of conditions under which a license forthe use of Standard Mark may be granted to the

10

manufacturers or producers may be obtained from theBureau of Indian Standards

11 CERTIFICATE OF TEST AND EXAMINATION

Every sling or batch of sling s shall be provided with atest certificate issued by a competent person givingthe following information:

a) Name of the manufacturer/ supplier,

b) Full description of the sling,

c) Safe working load,

d) Tested to proof load ,

e) Date of test, and

f) Specification No.

Table 1 Safe Working Load(Clause 9.2)

IS 2762 : 2009

SI No. Number Angle of Safe Working Load Remarksof Legs Usage

.A

DegreeRope Master Ring Intermediate Ring Complete Assemb ly

(I) (2) (3) (4) (5) (6) (7) (8)

! i) I 0 W 1.0 W - 1.0 W -! 0 W 2.0W - 2.0W,

90 W 1.4 W - 1.4 WJ i I .~ 2! ! 120 W 1.0 W - I.OW CriticalJ 2A W 2WcosA 2 W cos A :-

-i0 W 3.0 W 1.0 W 3.0W90 W 2.1 W 1.0 W 2.1 W

!iii) 3 120 W 1.5 W 1.0 W I.5W Critical i

2A W 3WcosA 1.0 W 3WcosA I0 W 4W 1.0 W 4W

iv) 490 W 2.8W 1.0 W 2.8W120 W 2.0W 1.0 W 2.0W Critical2A W .4 W cos A 1.0 W 4 Weos A

NOTES

1 A - Angle be tween any leg and the vertical line through the support point .

2 W - Sa fe wo rking load .

ANNEXA(Foreword, and Clauses 3.3.2 and9.1)

SAFE WORKING LOAD AT DIFFERENT METHODS OF LOADING

Nominal Single Part Double Part Endless and Two-Leg Three-Leg Four-LegRope (Single Leg) Grommet

DiameterStraight Choke Straight Choke Straight 0° <o s 90° < a :5 0° < a :5 90° < o s

Pull Hitch Pull Hitch Pull 90° 120° 90° 120°

(I No.) (2 No.)

mm t t t t t t t t t t t t t

Factor 1.00 0.80 2.00 1.60 2 x 2 lAO 1.12 1.00 0.80 2. 10 1.50 2.80 2.00

Coefficient of utilization: 5

Angle subtended by the slings at the point of lifting: a

Load (mass) for lifting: t (tonne)

II

IS 2762 : 2009

ANNEX B(Foreword, and Clause I)

GUIDELINES FOR USE OF SLINGS

a) Assess load to he lifted and its position ofcentre of gravity .

b) Ensure that a proper sling is chosen for liftingthe load.

c) Select the appropriate method of slinging.

d) The effective diameter of double pan shouldnot be less than twice the diameter of rope.

e) While fitting eye termination particularlywith thimble reinforcement to the liftinghook. ensure that it is seated properly withoutovercrowding.

f) Slings shall not be used for bending orstrapping unless they are so designed forlifting purposes.

g) Avoid use of lang' s lay rope for making sling.

h) Do not use hand spliced sling if it is likely torotate during lifting the load.

j) Lift the load slowly avoiding jerk, shock. etc .

k) Capacity of master link (ring) shall be at leastequal to the capacity of the full sling. Forintermediate link (ring) it shall be at least 1.4times that of one sling leg.

m) For two or more leg slings. maximumpermissible angle to the vertical for any slingleg shall not be more than 60°.

n) Do not use sling beyond its permissibleservice temperature as given below:

Type of Wire Service BearingSplicing Rope Tempera- Capacity

With ture Percent°C

Mechanica- Fibrelly spliced core --{i0 to +100 100with Alumi-

Steelnium-ferrule core

Fibre --(i() to + I00 100core

Hand--{i0 to +250 100

spliced Steel +250 to +400 75core

ANNEX C(Foreword, and Clause 1)

D~ARDCRnE~FORSL~GS

C·I Presence of broken wires, excessive wear.mechanical and other damages due to heal, chemicalreaction etc. are the main criteria for discarding a slingduring use. Appearance of any of the following kindsof damage shall be a reason to withdraw a sling fromthe service:

a) Broken strand.

b) Slackening under no load.

c) Crushing under no load.

d) Visible wire breakage at any point on a sling

12

for a length of:

3 x d» four numbers

6 x d » six numbers

30 x d » sixteen numbers

where d is diameter of rope.

e) Crushing at the load bearing point of the eyealong with four broken wires.

f) Kink formation.

g) Sign of corrosion.

h) Damage or undue wear at the eye termination.

IS 2762 : 2009

ANNEX D(Foreword)

COMMIITEE COMPOSITION

Wire Ropes and Wire Products Sectional Committee. MED 10

Organization

Directorate General of Mines Safety. Dhanbad

Amar Promoters Pvr Ltd. Solan

Bharat Coking Coal Ltd. Dhanbad

Bharat Wire Ropes Ltd. Mumbai

Central Institute of Mining and Fuel Research. Dhanbad

Directorate of Quality Assurance. New Delhi

Directorate General Factory Advice Service & Lab Institute.Mumbai

Directorate General of Aeronautical Quality Assurance.New Delhi

Directorate General of Civil Aviation. New Delhi

Directorate General of Suppliles & Disposals (QualityAssurance Wing). New Delhi

Eastern Coalfields Ltd. Kolkata

Ministry of Shipping, New Delhi

National Test House. Kolkata

Oil and Natural Gas Commission. Dehra Dun

Orient Win: Ropes, Indore

Paradip Port Trust, Paradip

South Eastern Coalfields Ltd, Bilaspur

Tata Steel Ltd. Dhanbad

The Shipping Corporation of India Ltd. Mumbai

The Singareni Collieries Co Ltd, Andhra Pradesh

Usha Breeo Ltd. Dist Ghaziabad (UP)

Usha Manin Industris Ltd. Ranchi

Vidarbha Hardware Industries. Akola

BIS Directorate General

Representative!s)

SHat T. S. MUKHEIUEE (Clulm..lI)DEI'lJrY DIREnoll (Mr£H). HQ IAlumau)

SHat VIRENDER AGAIlWAtSHIll JATlNDfJl AGAIlWAt (AltrrlllJtr)

SHRI RAMJI SAHAY

SHRI D. M. SHAHSHill ASHWINI LOKHANOC (AltrrlllJlr)

SHill AWADHESH MAHTOSHill S. K. RITOUA (Altrrnau)

COL P. K. SRIVASTAVACOL V. V. KADAM (Alumau)

SHRI G. M. E. K. RAJSHRI S. N. BORKEIt (Alur"at~)

SHill S. B. PRASADSHat SANJAY CHAWlA (Allrrnalr)

SURI R. C. GUPTASHRI M. M. KAUSHAt (Altana/~)

SHRI R. K. AGARWALSHat AIOOLESH KUMAR (Alt~rnau)

SHRI CHATTElUEESHRI KAPIL K. RAI (Altunat~)

SHill A. R. RAOSHill D. J. BASU (Alt~rnau)

SHRI S. P. RoySHRI R. N. RAM (Alternate)

SHill R. K. GARGSHill P. K. Sooo (Alt~l7JQu)

SHRI SAMF.FJl GoLWELKARSHill SIlISHlR AKARTF. (Alt~matt)

SUR' B. B. PAHIGRAHISHIU MOHAN PATEL KHErRA (Alt~mau)

SMaI S. K. MISURASHat G. RANASWAMI (Alt~l7JQte)

SHIU 50uMENDlI K. MAlHISHIU A. K. SIL (Alurnat~)

SHRI G. S. BHALLACAPT R. MODI (Alt~rnau)

Sill IVN PRAsADA RAOSilt P. V. RiIOHAVA RAJU (Alt~mat~)

SMaI RAJl!SH PRASADSHill MANOJ PANWAII (Alt~rnat~)

SHIU SUIlIlATA DunASHIll S. B. N. SHARMA (Alurna,,)

SHIU OM PRAKASH DALMIASHRI SANJAY O. DAuelA (Alt~mau)

SHill C. K. VEllA. Scientist 'F & Head (MED)[Representing Director General (Ex-officio]

M~mbuMcrrtarySHIU D. K. DAS

Scientist 'E' (MED), BIS

13

Bureau oflndian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certification of goodsand attending to connected matters in the country.

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BIS has the copyright of all its publications. No part of these publications may be reproduced in any formwithout the prior permission in writing of BIS. This does not preclude the free use, in the course ofimplementing the standard, of necessary details, such as symbols and sizes, type or grade designations.Enquiries relating to copyright be addressed to the Director (Publications), BIS.

Reviewoflndian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewedperiodically; a standard along with amendments is reaffirmed when such review indicates that no changes areneeded; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standardsshould ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of'BIS Catalogue' and 'Standards: Monthly Additions'.

This Indian Standard has been developed from Doc No.: MED 10(0857).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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