aaItem: ERW, SMLS carbon steel pipes aaMaterial: ASTM A106B, ASTM A 53A /B, ASTM A333-1. ... , ASTM A335-P1/P11, API 5L B, 20 ·Item: ERW, SMLS carbon steel pipes·Material: ASTM A106B, ASTM A 53A /B, ASTM A333-1 ... , STD, XS and XXS, or customized.·Pipe Billets from TPCO ERW carbon steel pipes