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  1. Irpin

    B31.3 Chapter IX, Allow. Stress

    Thanks Metengr, I will look at BPV Code and try and develop a trend curve as you suggested. Can you explain why Table K-1 does noy simply cover the same materials as Table A-1 ?
  2. Irpin

    B31.3 Chapter IX, Allow. Stress

    Hi XL83NL, Thanks, having read K302.3.2, the equation(31) I believe would establish the allowable stress for my material, but I am having trouble defining Ry, I just don't understand the wording of the definition "Ry is the ratio of the average temperature dependant trend curve value of yield...
  3. Irpin

    B31.3 Chapter IX, Allow. Stress

    I am currently working on a wellhead system, to API 6A and B31.3 Chapter IX High Pressure Piping, my question is to calculate the thickness of an inline 2’’ NB Blind, I was using Para K304.5.3 Blanks(B31.3), which stipulates Allowable Stress from Table K-1. However the Material is Alloy 625 UNS...

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