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  1. jhonniewalk

    EN 10253-4 Type A vs Type B and Seamless vs Welded

    Hi all Piping designers, I'm starting a projet where the client piping class uses fittings according EN 10253-4. The piping class is divided in Seamless/Welded. Form DN15 to DN125 are Seamless fittings and form DN150 to DN600 are Welded. After reading the Standard EN 10253-4 and some research...
  2. jhonniewalk

    Does ASME B16.11 exits with BSPT or BSPP Threads?

    Hi all Piping Gurus, I have used ASME B16.11 NPT threaded fittings many times on several projects. Now I'm getting a request to use ASME B16.11 but BSP threaded instead of NPT. To me this is new (I guess there is a first time for everything) and I'm wondering if it's a mistake or it's really...
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