P265GH 16MO3 Hot Rolled Electric Resistance Welded Steel Pipe Submerged Arc
Title: · PN-EN 10217-5
Welded steel tubes for pressure purposes – Technical delivery conditions -- Part 5: submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties
Scope of the standard:
The standard specifies the technical delivery conditions for circular submerged arc welded steel tubes with specified elevated temperature properties manufactured of non-alloy and alloy steels. It specifies the requirements for taking samples and the methods of testing.
Welded pipes of the following types:
· SAWH (spiral welding)
· SAWL (longitudinal welding)
The scope of the standard includes :
Circular submerged arc welded steel tubes with specified elevated temperature properties manufactured of non-alloy and alloy steels./ from 406,4 to 2540 mm /
Steel grades: P235GH ,P265GH, 16Mo3
Two testing categories are also distinguished in this case:
· TC1
· TC2
which differ with respect to the test type and, most of all, with the fact that ultrasound testing is introduced in the case of the TC2 group.
Pipe manufacturing stages and delivery conditions:
· Hot rolled or normalized sheets or strips
cold forming, SAW welding and normalization or without further thermal processing
normalized formation , SAW welding without further thermal processing
| Mandatory tests | |
| for the TC1 category | for the TC2 category |
| Ladle analysis | |
| Tensile testing in room temperature | |
| Tensile testing of the weld in room temperature for D>=508 mm | |
| Bend testing of the weld | |
| Hydrostatic tightness testing | |
| Dimension verification | |
| NDT of the weld | NDT of the base material in order to identify delamination |
| NDT of pipe ends in order to identify delamination | |
| NDT of sheet edges and strips in order to identify delamination | |
| Material identification for 16Mo3 | |
| Additional tests | |
| Check analysis | |
| Tensile testing in elevated temperature | |
| Resilience testing of the base material at the temperature of 20° or 0°C | |
| Longitudinal resilience testing for non-alloy steels at the temperature of –10° C | |
| Resilience testing of weld areas at the temperature of 20° or 0°C | |
| Wall thickness measurement at a distance from pipe ends | |
PN-EN 10217-5 Welded steel tubes Pictures
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