... , Korea, Vietnam, India , Pakistan, Iran, and so on. Steel pipematerialGB10#,20#,45#,20G.16Mn,27SiMn,15CrMoG,12Cr1MoU,20CrMo,35CrMo, 42CrMo, 12Cr1MoVG ... -75mmProduction technologyHot rolledCold rolledSurface treatmentCopper coatedGalvanizedothersortingStructural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on. Steel sheetmaterialDC01 ...