Low-carbon structural steel

　　The welding wire contains enough alloying elements such as silicon, manganese and other elements to jointly deoxidize, with a low carbon content of less than 0.1%. Welding materials: The purity of CO2 gas is 99.5%, the water content is not more than 0.1%, and the carbon content is not more than 0.1%. The copper plating on the surface of the welding wire does not allow rust spots.

　　Welding wire is a wire welding material used as a filler metal or at the same time as a conductive wire. In gas welding and tungsten gas shielded arc welding, the welding wire is used as a filler metal; in submerged arc welding, electroslag welding and other molten electrode gas shielded arc welding, the welding wire is both a filler metal and a conductive electrode. The surface of the welding wire is not coated with anti-oxidation flux.