... , 400G, 600G, mirror, Satin polish Material:AISI 201, 304 NameStainless Steel pipeStandardASTM A554, A249, A269 and A270, A312Material Grade201 ( Ni 0 ... test, heat treatment, NDTChemical Composition of Material MaterialComposition201202304316430C≤0.15≤0.15≤0.08≤0.08≤0.12Si≤1.00≤1.00 ... after orderValidityValid time is 5days for price usually. 304 stainless steel welded pipe