Commodity: ERW HFI , EFW, LSAW, DSAW Specification: Executive Standard: ASTM A53, API 5L , EN10217, DIN 2440, DIN 2441, DIN 1626, EN10240, DIN 2458 Material: ASTM A53, SS400, Q195-235, Q345(A, B, C), 16Mn, J55, K55, N80, L80, C90, C95, P110, Q125 ERW:Outer Diameter: 6mm-610mm...