Standard: Api, astm, gb, api 5l, ansi b36.10m-2004, asme b36.10m-2004, gb/t 8162-1999 Grade: A53-a369, q195-q345, st35-st52, a106(b, c), a333 gr6, a53(a, b), q235, q345, st37, st52 Thickness: 1.5 - 45 mm Section shape: Round Outer diameter: 21.3 - 1220 mm Place of origin: Tianjin, china (mainland) Secondary or not: Non-secondary Application: Structure pipe Technique: Erw Certification: Ce Surface treatment: Black painted, with oil or as required Special pipe: Erw steel pipe Alloy or not: Non-alloy Commodity: Erw steel pipe Length: 5.8m, 11.8m, 4-12m or as required Steel grade: 1020 1045 a106b st37 st52 Price terms: Fob, crf, cif, exw Shape: Round section