Dimensions
Bridge slotted screens and casings for water wells
similar to DIN 4922, produced from longitudinal welded (ERW) base pipe,
without circumferential welding seam of the base pipe


Base pipe:             Technical Standard           German Standard DIN 1626/2 
                               Dimension / Tolerances     German Standard DIN 2458 

Material:              ST 37-2                            German Standard DIN 17100 
                              Tensile strength                  340 - 470 N/mm2 
                                        Yield point                                    min. 235 N/mm2 

Connection:          On-welded pin and box thread joint
                              Round thread with 2 pitch per inch

Surface:                Hot dip galvanized acc. to ISO 9227 or black steel 

Bridge slots:         Height 1-3 mm 

Pipe length:          5,80 m overall, other length on request

 
Dimension and data 
Casings in all dimensions according to DIN 2458 available
DIN
inch
DIN
mm
Wall
mm
ID
mm
Joint
OD
mm
pin           box
Joint
length
mm
Collapse1
resistance
bar
Slots
base length
base width
mm
Bridge slots
numbers per pipe
Open area
up to
%
Weight2
kg/pipe
6 5/8" 168,3 4,0 160,3 178 185 100 55 35 x 10 1.170 11,5 100
8 5/8" 219,1

219,1

219,1

4,0

5,0

6,0

211,1

209,1

207,1

230

230

230

240

240

240

100

100

100

24

51

94

35 x 10

35 x 10

35 x 10

1.560

1.560

1.560

11,5

11,0

10,5

135

168

210

10 3/4" 273,0

273.0

5,0

6,0

263,0

261,0

282

282

294

294

100

100

26

47

35 x 10

35 x 10

1.950

1.950

11,0

10,5

208

260

12 3/4" 323,9

323,9

5,0

6,0

313,9

311,9

340

340

350

350

120

120

15

27

35 x 10

35 x 10

2.340

2.340

11,0

10,5

271

316

1 Collapse resistance for casing theoretically according to collapse calculation with highest minus tolerance.
2 With pin and box thread joint.