Carbon Steel : ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 51 GR. B, API 51 X 42, X 46, X 52, X 60,X 65 & X 70. ASTM / ASME A 691 GRA, B & C LTCS: ASTM A 333 G 66/Gr. 1 with IBR Alloy Steel : ASTM A335 GR. Pl/ P5/ P9/ PII/ P22/P91 etc. Types: Round , Square, Rectangular. Size: Upto 24″ NB. (Seamless)