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  1. mickdale

    weld build up using unassigned to unassigned WPQR

    hello gents i have read through ASME IX and am still at a loss. I have a WPQR GTAW welding an unassigned material to another unassigned material. If i use the same essential and supplemenatry variables to GTAW weld build up one of the unassigned materials used in the WPQR - am i ok to do this...
  2. mickdale

    ASME B31.3 PWHT requirements for P No.5A

    thanks for the help guys
  3. mickdale

    ASME B31.3 PWHT requirements for P No.5A

    ASME B31.3 requirements for heat treatment nominal wall thickness below 13mm. preheat minimum 175 degrees C but PWHT is not required The above requirements are different to those stated in ASME B31.1 which require PWHT 675 - 760 degrees C and ASME VIII which require PWHT 675 degrees C From...

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