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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 |
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| Dimension
and data
Casings in all dimensions
according to DIN 2458 available
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|
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. |
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