... A, B, C, ASTM A 333, Gr 1 to 6 Alloy Steel: ASTM A 335, GR P1, P2, ... P5, P9, P11, P22, P91 Types : RoundSize : Seamless: 1/4” Upto 28" NBWelded: 1 ... our success. Our Carbon steel, Stainless Steel, Alloy Steel Pipe and pipe fittings, flanges are mainly ... Pipe, fittings, flangesMaterial: Carbon steel, stainless steel, Alloy steel. Standard: ANSI ASTM DIN JIS GBSize: Up ...