BRIDGE SLOTTED SCREENS AND CASINGSstuewa.cands.de/page/uploads/files/downloads/38-45-en.pdf ·...

2015-09-v1-K03-sBF please note: technical data is subject to change, see Chapter 15 for details

stÜWa Konrad stükerjürgen GmbHHemmersweg 80d - 33397 rietberg

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BRIDGE SLOTTED SCREENS AND CASINGSstÜWa bridge slotted screens and casings are at the cutting edge when it comes to stability and material quality. they offer many advantages:

Advantages Series production up to 6 m without circular seam. Longitudinal seam welded inside and outside High mechanical stability due to special arrangement

of the slots Slot widths of 0.5 mm or more feasible

(depending on wall thickness) Large wall thicknesses up to 12 mm feasible High installation reliability and safety Efficient and cost-effective installation Special lengths feasible Large open areas Excellent regeneration capability

BridGe slotted sCreens/CasinGs

Gravel pack screensscreen with rilsan coating

screens and casings with various connections




Basic material

Stainless steel, different qualities depending on ground water properties and temperature.

Steel - mild steel, preferably s235Jr or similar steel with good weldability properties. suitable for drawdown wells. not approved for drinking water.

Steel - galvanized, s235Jr as base material. only suitable to a limited extent for contact with drinking water.

Steel - coated plastic , s235Jr as base material, rilsan-coated, approved for drinking water. meets the KtW recommendation of the German Federal department of Health.

Properties and suitability of stainless steel

M No. 1.4301 (X5CrNi18-10), AISI 304 this type of steel is resistant to water and slightly polluted waste water as well as weak organic and inorganic acids. Generally it is resistant to a pH value up to approx. 4.5 in aggressive substances low in chloride.

M No. 1.4306 (X2CrNi19-11), AISI 304Lsimilar properties as 1.4301 but with lower carbon content, resulting in an increased resistance to intergranular corrosion, which can occur, e.g. during the welding process.

M No. 1.4307 (X2CrNi18-9), AISI 304Lsimilar properties as 1.4306 but with slightly lower ni content.

M No. 1.4541 (X6CrNiTi18-10), AISI 321 stainless steel has excellent resistance properties to a variety of aggressive media. Furthermore, this material is characterised by a good ductility.

M No. 1.4404 (X2CrNiMo17-13-2), AISI 316L Better general resistance compared to 1.4301, 1.4306, 1.4307 and 1.451, particularly in case of increased chloride content. resistance to intergranular corrosion is ensured by limiting the carbon content.

M No. 1.4571 (X6CrNiMoTi17-12-2), AISI 316Ti similar properties as 1.4404 but with guaranteed resistance to intergranular corrosion due to titanium content.

M No. 1.4462 (X2CrNiMoN22-5-3) Duplexthis duplex steel is characterised primarily by its high pitting and stress corrosion resistance in neutral and chlorine-containing media resulting in good resistance to seawater.

M No. 1.4539 (X1CrNiMoCuN 25-20-5) High resistance to phosphorus and sulphuric acid media with simultaneous chloride contamination.

Additional material grades available on request

MATERIALS





Selecting the best connection

the choice of connections largely depends on technical re-quirements such as tensile strength, collapse resistance, and installation guidelines for construction sites.

in addition, the outer diameter of the respective connection should be considered also, which is larger than the pipe diameter.

CONNECTIONS

6 7

1

5

32 4

1 Zsm connection with restraining rod2 round thread connection3 Flange connection4 screwing bar connection5 api thread connection6 restraining bar connection7 Welding bridge connection

Overview of connection types


1|2




Flanges DIN 4922-3

d2d3

S1

Hex nutM16 DIN 934-5

Hex screw M16

Disc 17 DIN 125 - nr St

Sealing gasket

Connections external diameter d3Nominal diameter DN 100 125 150 200 250 300 350 400 500 600 800 1,000

Welding bridge [mm] 125 150 180 231 287 336 370 421 531 631 839 1,044

Screwing bar incl. bolt head, company standard [mm] 140 165 195 246 302 350 383 436 546 646 854 1,059

Restraining bar, company standard [mm] 125 148 164 214 268 — — — — — — —

Round thread [mm] 138 164 190 245 295 345 380 435 550 — — —

ZSM [mm] 140 170 190 251 304 352 401 443 543 643 — —

API thread [mm] 127 154 188 245 298 355 382 432 535 — — —

DIN flange [mm] — — — — — — — — 606 706 920 1,120

Connections inner diameter d2Welding bridge [mm] 108 133 160 215 265 314 345 390 495 595 785 995

Screwing bar, company standard [mm] 108 133 160 215 265 314 345 390 495 595 785 995

Restraining bar joint, company standard [mm] 108 125 150 200 250 — — — — — — —

ISO round thread [mm] 108 133 160 215 265 315 346 390 490 — — —

ZSM [mm] 103 127 150 203 255 300 341 388 485 585 — —

API thread [mm] — — — — — — — — — — — —

DIN flange [mm] — — — — — — — — 495 595 785 995

CONNECTIONS

d2

d3

S1

Welding bridge DIN 4922-1Screwing bar DIN 4922-1

d2

d3

S1

Round thread DIN 4922-2 and ISO/API

S1

d3

d2

Sealing ring

ZSM DIN 4922-4

S1

d3

d2

Shear bar

Sealing ring

S 1d 3

API thread


2|2




TECHNICAL DATA

larger dimensions available on request. table from Butting catalogue issue 222/1999 p. 50

Calculation based on api Bul 5C3 strength value: 275 n/mm2 (4000 psi) comparable with api material H40 Collapse resistance in bar (min.)

Pipe diameters compliant to ISO/APINominal diameter DN 100 150 200 250 300 350 400 500 600 800 1,000

Test mandrel Ø [mm] 101 154 205 256 307 339 386 483 586 786 986

Outer Ø [mm] 114.0 168.3 219.1 273.0 323.9 355.6 406.4/404 508.0/484 610.0 813/804 1,016/964

Wall thickness [mm] 3 3 3 4 4 4 5 6 6 8 8

CasinGs

1|4

Collapse resistance of casings made from steel/stainless steelNominal diameter Wall thickness

[inch] [mm] [mm]2 2.5 3 4 5 6 7 8 9 10 11 12

Collapse resistance

[psi/bar]

3 ½ 88.9560

381,052

721,513

1042,610

1803,612

249— — — — — — —

4 ½ 114.3261

18513

35899

621,615

1112,498

1723,278

226— — — — — —

5 127.0189

13372

25684

471,328

912,109

1452,810

193— — — — — —

5 ½ 139.7141

10278

19485

331,094

751,680

1152,428

167— — — — — —

6 5/8 168.380

6158

11275

19696

481,182

811,669

1152,307

1592,836

1953,365

2323,895

268— —

7 177.868 4.7

134 9

233 16

559 38

1,052 72

1,513 104

2,109 145

2,610 180

— — — —

7 5/8 193.752 3.6

103 7

179 12

431 29

863 59

1,286 88

1,709 117

2,281 157

— — — —

8 5/8 219.136 2.5

72 5

123 8

296 20

584 40

992 68

1,365 94

1,739 119

2,261 156

2,668 184

— —

9 5/8 244.5 — —88

6212

14418

28759

521,094

751,429

981,764

1212,245

154— —

10 ¾ 273.0 — —63 4.4

152 10

299 20

521 36

849 58

1,149 79

1,449 100

1,749 120

— —

11 ¾ 298.4 — —48 3.3

116 8

228 15

397 27

670 46

945 65

1,219 84

1,493 103

— —

12 ¾ 323.9 — —38 2.6

90 6

178 12

309 21

495 34

772 53

1,025 70

1,277 88

1,530 105

1,783 122

13 3/8 339.7 — —32 2.2

78 5

154 10

268 18

428 29

678 46

919 63

1,160 80

1,401 96

1,642 113

16 406.4 — — —45

389

6155

10248

17372

25533

36764

52966

661,167

80

18 3/8 473.1 — — —29

256

398

6156

10234

16335

23462

31618

42826

57

20 508.0 — — —23 1.6

45 3

79 5

126 8

189 13

270 18

372 25

498 34

684 47




Kiesbelag

d

TECHNICAL DATA

Free opening for screens with high performance bridge slotting screen perforations

Up to 35% open areas the bridge slot openings may have a tolerance of +/- 0.2 mm, which means that the values listed above for the open area are approximate values.

approx. 2 mm minimum opening for galvanized and rilsan-coated screens since the bridge openings could otherwise become plugged due to the coating process.

BridGe slotted sCreens

Nominal diameter Outer Ø above gravel sheath dDN [inch] [mm]

100 4 174

125 5 198

150 6 211

200 8 261

250 10 330

300 12 385

350 14 420

400 16 473

500 20 580

600 24 680

800 32 879

Gravel pack screens

Gravel pack screens allow an installation without a gravel base.

the advantages of this screen type are: slim diameter, uniform grain size, high porosity.

2|4

a2

a3a

1

S1

w b

h

t

ka 2

a 1

S1

w b

h

t

Wall thickness s1 Bridge opening h Free opening fi[mm] [mm] [%]

3.0

0.5 8.50

1.0 16.10

1.5 25.40

2.0 32.32

additional wall thicknesses available on requestlengths of up to 6 m are manufactured without circumferential seam.

Pipe diameters compliant to ISO/APINominal diameter DN 100 150 200 250 300 350 400 500 600 800 1,000

Test mandrel Ø [mm] 101 154 205 256 307 339 386 483 586 786 986

Outer Ø [mm] 114.0 168.3 219.1 273.0 323.9 355.6 406.4/404 508.0/484 610.0 813/804 1,016/964

Wall thickness [mm] 3 3 3 4 4 4 5 6 6 8 8

Gravel pack




TECHNICAL DATA

Tool dimension a1

Wall thickness s1

Bridge opening h

Medium slot length a2

Slot width w

Longitudinal division t

Side bridge b

Free opening approx. fi

[mm] [mm] [mm] [mm] [mm] [mm] [mm] [%]

17

3.0

1.0 18.50 5 39 5.5 9.04

1.5 19.25 5 39 5.5 14.11

2.0 20.00 5 42 5.5 18.14

2.5 20.75 5 42 5.5 23.58

3.0 21.50 5 45 5.5 27.33

4.0

1.0 18.50 5 42 5.5 8.39

1.5 19.25 5 42 5.5 13.08

2.0 20.00 5 45 5.5 16.94

2.5 20.75 5 45 5.5 22.03

3.0 21.50 5 48 5.5 25.59

Tool dimension a1

Wall thickness s1

Bridge opening h


Slot width w


Side bridge b


[mm] [mm] [mm] [mm] [mm] [mm] [mm] [%]

20

4.0

1.0 21.50 7 45 7.5 6.58

1.5 22.25 7 48 7.5 9.59

2.0 23.00 7 48 7.5 13.21

2.5 23.75 7 51 7.5 16.05

3.0 24.50 7 51 7.5 19.86

3.5 25.25 7 54 7.5 22.50

4.0 26.00 7 54 7.5 26.56

5.0

1.0 21.50 7 48 7.5 6.17

1.5 22.25 7 51 7.5 9.02

2.0 23.00 7 51 7.5 12.43

2.5 23.75 7 54 7.5 15.17

3.0 24.50 7 54 7.5 18.77

3.5 25.25 7 57 7.5 21.33

4.0 26.00 7 57 7.5 25.18

6.0

1.0 21.50 7 51 7.5 5.81

1.5 22.25 7 54 7.5 8.52

2.0 23.00 7 54 7.5 11.74

2.5 23.75 7 57 7.5 14.38

3.0 24.50 7 57 7.5 17.79

3.5 25.25 7 60 7.5 20.25

4.0 26.00 7 60 7.5 23.90


Free opening for standard bridge slotted screen DIN 4922, Part 1

3|4

the slot width tolerance compliant to din is +/- 0.2 mm, which means the values listed above for the open area are approximate values.

approx. 2 mm minimum opening for galvanized and rilsan-coated screens, since the bridge openings could otherwise plug due to the coating process.




the slot width tolerance compliant to din is +/- 0.2 mm, which means the values listed above for the open area are approximate values.

approx. 2 mm minimum opening for galvanized and rilsan-coated screens, since the bridge openings could otherwise plug due to the coating process.

TECHNICAL DATAFree opening for standard bridge slotted screen DIN 4922, Part 1

Tool dimension a1

Wall thickness s1

Bridge opening h


Slot width w


Side bridge b


[mm] [mm] [mm] [mm] [mm] [mm] [mm] [%]

24

5.0

1.0 25.75 7 60 8 5.72

1.5 26.62 7 60 8 8.89

2.0 27.50 7 63 8 11.64

2.5 28.37 7 66 8 14.32

3.0 29.25 7 66 8 17.72

3.5 30.12 7 69 8 20.38

4.0 31.00 7 69 8 23.96

6.0

1.0 25.75 7 63 8 5.45

1.5 26.62 7 63 8 8.46

2.0 27.50 7 66 8 11.11

2.5 28.37 7 69 8 13.70

3.0 29.25 7 69 8 16.96

3.5 30.12 7 72 8 19.53

4.0 31.00 7 72 8 22.96

8.0

1.0 25.75 7 69 8 4.97

1.5 26.62 7 69 8 7.72

2.0 27.50 7 72 8 10.18

2.5 28.37 7 75 8 12.60

3.0 29.25 7 75 8 15.60

3.5 30.12 7 78 8 18.03

4.0 31.00 7 78 8 21.19

lengths of up to 6 m are made without circumferential seam.


4|4

a2

a3a

1

S1

w b

h

t

k

a 2

a 1

S1

w b

h

t

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