Acceptance of Induction Bending of pipe to ASME B31.1 & 3
Acceptance of Induction Bending of pipe to ASME B31.1 & 3
(OP)
Dear all,
Induction bending of pipe can replace a lot of welded fittings. Under what conditions the induction pending can be accepted to be in compliance to ASME B31.1 and ASME B31.3? (maybe the answer already exists in a code interpretation!)
Regards
Induction bending of pipe can replace a lot of welded fittings. Under what conditions the induction pending can be accepted to be in compliance to ASME B31.1 and ASME B31.3? (maybe the answer already exists in a code interpretation!)
Regards





RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
Induction bends are quite popular for any type of pipelines, ref ASME-B-16.49 for manufacturing details.Induction bends are typically applicable for pipes and related bends(long or short radius elbows).
However induction bends are not a full replacement for forged fittings(various shapes) which are an integral part of Process Piping.
Induction bending is quite tricky.Unless well experienced Mills are involved the product consistency could be disastrous, especially for smaller OD pipes,typically 6" and below.
Hence this issue is a very subjective at the discretion of the designer, which any piping code may not accept outright .
Thanks.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
It's unusual to get multiple bends in a single pipe so unless you have lots of strange angles I can't see where the advantage is.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3
Induction bends are fully used in both B31.1 and B31.3 piping installations and conform to the hot bending criteria stated therein. They are primarily used due to more favorable costs and the availability (poor) of standard wrought ells and "timing as the essence" language in construction contracts. They have been used in projects for which I have been involved for approximately the past 40 years.
RE: Acceptance of Induction Bending of pipe to ASME B31.1 & 3