... 430 welded tube Out diameter:6mm-750mm Wall thickness:0.3-75mm Finish: Polished,Black,Aciding Length: Random or Fixed 430 welded ... .specificationThickness:0.5mm-140mmProduction technologyHot rolledCold rolledsortingPressure vessel plate, high strength low alloy, structural steel for bridge, structuralsteel for ... ,317L,309,309S,310,310S,430,409specificationRoundSquarerectangle 430 welded tube