aaItem: ERW, SMLS carbon steel pipes aaMaterial: ASTM A106B, ASTM A 53A ... , ASTM A335-P1/P11, API 5L B, 20 ·Item: ERW, SMLS carbon steel pipes·Material: ASTM A106B, ASTM A 53A ... 20 #.· Length: 6m and 12m , or customized·Outer Diameter: 1/ 2” to 36” , above 14” is our advantage.·Wall Thickness: SCH10 ... to SCH160, STD, XS and XXS, or customized.·Pipe Billets from TPCO ERW carbon steel pipes