|
| PRODUCTION |
| Heavy-weight steel pipes
made to DIN 2441-78 |
DIN 2441 - 78
Steel grade: St 33.2
Pipes are suitable for work with nominal pressure 25 for liquids and nominal pressure 10 for air and safety gas.
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Assortment of cold-worked pipes
|
External diameter |
Wall thickness |
Nominal weight,
plain end pipes |
| mm |
inch (nom.) |
mm |
inch |
kg/m |
|
21,3
|
1/2 |
3,25
|
0,127 |
1,45 |
|
26,9
|
3/4 |
3,25
|
0,127 |
1,90 |
|
33,7
|
1 |
4,05
|
0,159 |
2,97 |
|
42,4
|
1 1/4 |
4,05
|
0,159 |
3,84 |
|
48,3
|
1 1/2 |
4,05
|
0,159 |
4,43 |
|
60,3
|
2 |
4.50
|
0,177 |
6,17 |
|
76,1
|
2 1/2 |
4,50
|
0,177 |
7,90 |
Assortment of hot-worked pipes
|
External diameter |
Wall thickness |
Nominal weight,
plain end pipes |
| mm |
inch (nom.) |
mm |
inch |
kg/m |
| 88,9 |
3 |
4,85 |
0,190 |
10,10 |
| 114,3 |
4 |
5,40 |
0,212 |
14,40 |
| 139,7 |
5 |
5,40 |
0,212 |
17,80 |
Length of cold-worked pipes:
-random from 1,5 m up to 7 m;
-specified length is subject to agreement.
Length of hot-worked pipes:
-technological length is 6 mą1m;
-the length 4-5 m or 7-8 m is allowed; such pipes are bundled separately (under 10% of supplied quantity).
Note:
-Pipes are manufactured with plain ends without thread (only seamless).
-Pipes are supplied with "black" surface.
-Eddy-current test is used to check tightness of the pipes.
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