Mill hydro test pressure per ASTM A530 for A106 pipes ...
metengr, The mill test is at a stress of 60% of SMYS. This is nearly the allowable stress of 2/3 Sy. The pipe will only see a test pressure of 1 x design. My question is why is that a leak test of times is required for post fabrication leak test per ASME B The ASTM mill test is to test through wall leaks of a seamless pipe.