We have a complete range of specifications for stainless steel seamless pipes. STAINLESS STEEL SEAMLESS PIPES ... Thickness: 1mm~40mm Standard: G/B or ASTM standard Grade for G/B standard: 321,304,304L,316,316L,304H,347H ... ,317L,310S,309S, 904L,31803 and so on. Grade for ASTM standard: A213,A269,A312,A790,A789,A554 and so ... any need, pls feel free to contact me for detailed information and quotation.