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
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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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
BridGe slotted sCreens/CasinGs
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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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
BridGe slotted sCreens/CasinGs
1|2
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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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
BridGe slotted sCreens/CasinGs
2|2
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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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
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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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
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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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
Medium slot length a2
Slot width w
Longitudinal division t
Side bridge b
Free opening approx. fi
[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
BridGe slotted sCreens
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.
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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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
Medium slot length a2
Slot width w
Longitudinal division t
Side bridge b
Free opening approx. fi
[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.
BridGe slotted sCreens
4|4
a2
a3a
1
S1
w b
h
t
k
a 2
a 1
S1
w b
h
t
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