304L stainless steel pipe We can offer many steel pipes with different steel grades after negotiating with customers. 304LStainless steel pipeGrade: Steel standard: ASTM, JIS, DIN, GB, EN, BS.The main Materials: 304, 304L, 316, 316L, 321, 321H, 310S, 347HStandards: GB/T14975-2002, GB/T14976-2002, GB/T13296-91, GB9948-88, ASTM A312, ASTM A213, ASTM A269, ASTM A511, DIN17458, EN10216.Outer Diameter ...