Steel Grade : 304, 304L, 316, 316L, 304/304L, 316/316L, 317, 310, 321 Finish : Cold Finished, Hot Finished Size Range : O.D 8~170mm, Thickness 0.4~40mm Specification : ASTM A213, A268, A269, A271, A376, A312, A511, DIN17440 Approvals : ISO9002, JIS, TUV, NKK, DNV, LLOYD'S, BV...