Thanks a lot
I am still confuse about code for construction, I want to use ASME VIII, but Code Construction is B 31.8..So, I use B31.8 for design calculation..But list of material Stress spec between B31.8 and ASME VIII is different..ASME VIII use ASME II PART D for Max allowable stress (S) for calculation, and Pig launcher use SMYS at B31.8 for calculation. for example..."Launcher use material API 5L-X52 ; if I use ASME VIII, I can't make calculation with that because API 5L is not in ASME PART II D. And to determine the reducer section(conical ), I use ASME VIII for conical head..but I got trouble again to find value of Max Allowable Stress (S)"
thanks before.