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  1. LTG BS

    B31.1 A691 NBEP Allowed?

    Hello I have an application where I would like to use 2.25CR-1Mo A691 for use in a NBEP location that has been designed with B31.1. In Table A-2 Note 1 it states that "THIS MATERIAL IS NOT ACCEPTABLE FOR USE ON BOILER EXTERNAL PIPING". It does not say anything about NBEP so I am free to use...
  2. LTG BS

    Weld Joint Efficiency Factor

    Hello I have a question regarding Weld Joint Efficiency Factors (E). I am working in B31.1 and am looking to spec out a new 28"x.75" Thk. SA387 GR22 rolled, full penetration welded, x-ray, PWHT to be installed in an existing system. I am getting some plate rolled and welded to use. I am...

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