WeldEngr2016
Mechanical
Hi Experts, Please advise if Pre-heat is must for a wall thickness of 37mm and plate grade is A387 gr22. What technique of pre-heat can be applied by a pipe mill. The final pipe is A691 cl-22.
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Hi Experts, Please advise if Pre-he
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racookpe1978
Nuclear
If that pipe mill is actually "welding" pipe after it is rolled and axially welded and treated, and not just forming its pipe. The initial fabrication and metallurgy of the pipe itself is not addressed by the PWHT requirements of weld fabrication after it becomes "pipe" and is shipped.
The post-fabrication metallurgy and crytal structure of "pipe" and its welds and its fittings are all intended to protect and preserve that initial metallurgy established by the mill before shipping.
The post-fabrication metallurgy and crytal structure of "pipe" and its welds and its fittings are all intended to protect and preserve that initial metallurgy established by the mill before shipping.
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