... ". 3) Pressure: SCH5S-160. 4) ISO certificated. Features:Product Stainless Steel Pipes,Duplex Steel PipesSize Seamless Pipes 1/2"-20" Welded Pipes 1 ... A511,A269,A312,A213.Material Stainless SteelGrade ANSI TP304,304L,310/S,316,316L,316/316L DUAL GRADE,317L,321,321H,347 ... ,310S,904L.etc.Surface Annealed,Cold Pilgered,Pickled,Mirror Polished grade 320,600 etc.Packing plastic bag wrapped Outside,then in ...