... (1/2"-64") 4)MOQ: 1pcs(Carbon/Stainless Steel) 5)FOB:1-89$/pc Socket Welding Flange PNDINPN ... ASME B16.5/B16.47, MSS SP-44ISOJISMaterial(Carbon Steel):ASTM A105,20#,Q235,16Mn, ASTM A350 LF1, ... F48, F50, F52, F56, F60, F65, F70(Stainess Steel): ASTM A182 F304,304L, F316,316L,1Cr18Ni9Ti,0Cr18Ni9Ti,321,18 ... -8(Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22 ...