Pipes and Tubes:- Material Type : Stainless Steel : ASTM A 312, Grade: TP 304, 304L, 304H, 316, 316L 309, 310, 310S, 317, 317L, 321, 347, 904L. Types : Round , Square, Rectangular Size Range : Upto 36" NB (ERW & Seamless) Wall Thickness : Sch. 5S To Sch. XXS Dimensions : ANSI B 36.10, B 36.19, Etc