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Welded steel pipes for pressure purposes -- Part 3: Alloy fine grain steel tubes
It specifies the technical delivery conditions for circular welded steel tubes manufactured of weldable alloy fine grain steels. The standard specifies the requirements for taking samples and the testing methods.
Circular welded steel tubes manufactured of alloy fine grain steels / from 10,2 to 2540 mm /
Steel grades: P275, P355, P460
Pipe manufacturing stages and delivery conditions:
· Normalized rolled strip, cold formed, HFW welding and weld or tube normalization
· Hot rolled strip or normalized strip, cold formed, HFW welding and normalization through cold forming, HFW welding and hot reduction and normalization through cold forming, welding and hot reduction in the temperature adequate to obtain the normalized state
· Hot rolled sheets or strips, cold forming, SAW welding and normalization
· Normalized rolled sheets or strip, cold forming, SAW welding, without thermal processing
| Mandatory tests | |
| for the TC1 category | for the TC2 category |
| Ladle analysis | |
| Tensile testing of the base material in room temperature | |
| Tensile testing of the weld in room temperature of SAW pipes for D>=508 mm | |
| Flattening test or ring testing for HFW pipes | |
| Expansion testing or ring expansion testing for HFW pipes | |
| Resilience testing of the base material in low temperature | |
| Weld bending test for SAW pipes | |
| Weld resilience test for SAW pipes | |
| Material resilience test | |
| Tightness testing | |
| Dimension verification | |
| NDT of the weld for SAW pipes | |
| NDT of the weld for HFW pipes | NDT of the weld and of the pipe body in order to identify any longitudinal discontinuity in HFW pipes |
| NDT of the base material in order to identify any delamination in SAW pipes | |
| NDT of pipe ends in order to identify any delamination for SAW pipes | |
| NDT of sheet edges and strips in order to identify any delamination in SAW pipes | |
| Additional tests: | |
| Check analysis | |
| Wall thickness measurement at a distance from pipe ends | |
| Tensile testing in elevated temperature | |
| Tensile testing of the weld in room temperature for HFW pipes | |
| Wall thickness measurement at a distance from pipe ends | |
| Non-destructive testing in order to identify any transverse defects in HFW pipes | |
Welded steel pipes for pressure purposes -- Part 3: Alloy fine grain steel tubes
It specifies the technical delivery conditions for circular welded steel tubes manufactured of weldable alloy fine grain steels. The standard specifies the requirements for taking samples and the testing methods.
Circular welded steel tubes manufactured of alloy fine grain steels / from 10,2 to 2540 mm /
Steel grades: P275, P355, P460
Pipe manufacturing stages and delivery conditions:
· Normalized rolled strip, cold formed, HFW welding and weld or tube normalization
· Hot rolled strip or normalized strip, cold formed, HFW welding and normalization through cold forming,
HFW welding and hot reduction and normalization through cold forming, welding and hot reduction in the temperature adequate to obtain the normalized state
· Hot rolled sheets or strips, cold forming, SAW welding and normalization
· Normalized rolled sheets or strip, cold forming, SAW welding, without thermal processing
| Mandatory tests | |
| for the TC1 category | for the TC2 category |
| Ladle analysis | |
| Tensile testing of the base material in room temperature | |
| Tensile testing of the weld in room temperature of SAW pipes for D>=508 mm | |
| Flattening test or ring testing for HFW pipes | |
| Expansion testing or ring expansion testing for HFW pipes | |
| Resilience testing of the base material in low temperature | |
| Weld bending test for SAW pipes | |
| Weld resilience test for SAW pipes | |
| Material resilience test | |
| Tightness testing | |
| Dimension verification | |
| NDT of the weld for SAW pipes | |
| NDT of the weld for HFW pipes | NDT of the weld and of the pipe body in order to identify any longitudinal discontinuity in HFW pipes |
| NDT of the base material in order to identify any delamination in SAW pipes | |
| NDT of pipe ends in order to identify any delamination for SAW pipes | |
| NDT of sheet edges and strips in order to identify any delamination in SAW pipes | |
| Additional tests: | |
| Check analysis | |
| Wall thickness measurement at a distance from pipe ends | |
| Tensile testing in elevated temperature | |
| Tensile testing of the weld in room temperature for HFW pipes | |
| Wall thickness measurement at a distance from pipe ends | |
| Non-destructive testing in order to identify any transverse defects in HFW pipes | |
Welded steel pipes for pressure purposes -- Part 3: Alloy fine grain steel tubes
It specifies the technical delivery conditions for circular welded steel tubes manufactured of weldable alloy fine grain steels. The standard specifies the requirements for taking samples and the testing methods.
Circular welded steel tubes manufactured of alloy fine grain steels / from 10,2 to 2540 mm /
Steel grades: P275, P355, P460
| Mandatory tests | |
| for the TC1 category | for the TC2 category |
| Ladle analysis | |
| Tensile testing of the base material in room temperature | |
| Tensile testing of the weld in room temperature of SAW pipes for D>=508 mm | |
| Flattening test or ring testing for HFW pipes | |
| Expansion testing or ring expansion testing for HFW pipes | |
| Resilience testing of the base material in low temperature | |
| Weld bending test for SAW pipes | |
| Weld resilience test for SAW pipes | |
| Material resilience test | |
| Tightness testing | |
| Dimension verification | |
| NDT of the weld for SAW pipes | |
| NDT of the weld for HFW pipes | NDT of the weld and of the pipe body in order to identify any longitudinal discontinuity in HFW pipes |
| NDT of the base material in order to identify any delamination in SAW pipes | |
| NDT of pipe ends in order to identify any delamination for SAW pipes | |
| NDT of sheet edges and strips in order to identify any delamination in SAW pipes | |
| Additional tests: | |
| Check analysis | |
| Wall thickness measurement at a distance from pipe ends | |
| Tensile testing in elevated temperature | |
| Tensile testing of the weld in room temperature for HFW pipes | |
| Wall thickness measurement at a distance from pipe ends | |
| Non-destructive testing in order to identify any transverse defects in HFW pipes | |
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