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Specification material Carbon Steel ASTM A105, LF2, CL1 / CL2 16MN,20# Stainless Steel ASTM A182, F304 / 304L, F316 / 316L,A182F317/317L,A182F310,F321,F347,316Ti Alloy Steel ASTM A182 A182 F12,F11,F22...