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  1. alomejorfofi

    Problems welding thin wallthickness pipe

    I am waitting for the quotation from suppliers, so when i recieve it i will see if there are fittings with this schedule in stock and their prices. Then, the proposal manager will question me about my technical evalutaion, and then...........i say that in large diameters like 18", 16", 14", 12"...
  2. alomejorfofi

    Problems welding thin wallthickness pipe

    thanks guys! greetings
  3. alomejorfofi

    Problems welding thin wallthickness pipe

    Hi, I am selecting the specification of a pipe system for cooling a nuclear experiment. The material you selected by the characteristics of Fluids is stainless steel A312 Gr 316L TP for various diameters. Several colleagues with experience on the site, have warned me that buttwelding pipe with...
  4. alomejorfofi

    PostWeld Heat Treatment (PWHT) dissimilar materials

    I do not know, but I guess not a good engineering practice to weld P91 to A106, and less in services with moderately high temperatures, but if it is absolutely necessary I think the best are transition pieces welded, even P11 after P22. Will have to see what the best option considering the...
  5. alomejorfofi

    PostWeld Heat Treatment (PWHT) dissimilar materials

    so, carbon steel can not be welded to alloy steeel P No. 15E
  6. alomejorfofi

    PostWeld Heat Treatment (PWHT) dissimilar materials

    ok, This code says several things about the temperatures required. so, if i have understood well, it's no possible to weld carbon steel and P91 grade alloy because PWHT "shall be that specified for the material requiring the higher PWHT temperature", so, how is the better way in the practice to...
  7. alomejorfofi

    PostWeld Heat Treatment (PWHT) dissimilar materials

    Hello, i'm an engineer working on the piping department of on a power generation EPC contractor company. i'm doing a study on postweld heat treatments (PWHT) possibilities between alloy steel (A335-P91, P22 and P11)and carbon (A106) or stainless steel. I have not yet found practical...

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