Tube Car Acier Round Tube Galvanise TIANJIN BAOLF STEEL CO., LIMITED Base Info Usage:Pipeline Transport, Oil,Gas Drilling, Machinery Industry, Construction & DecorationMaterial:Carbon SteelSurface Treatment:GalvanizedTechnique:ERWType:WeldedSection Shape:RoundOrigin:China Description Pre:G320MPa Dx51d Pre-Coated Metal for Home Appliance Next:Building Construction Deformed Steel Bar Hot Rolled Steel Rebar