... technologyHot rolledCold rolledSurface treatmentCopper coatedGalvanizedothersortingStructural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, ... on.specificationThickness:0.5mm-140mmProduction technologyHot rolledCold rolledsortingPressure vessel plate, high strength low alloy, structural steel ... :51 - 100 People Structural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, ...