CO2 welding wire AWS ER70S-6 CO2 Gas-shielded Welding Wire are widely used in the line of shipbuilding, container, automobile.. CO2 Welding Wire:CO2 Gas-shielded Welding Wire are widely used in the line of shipbuilding, container, ... automobile, bridge,etc.Diameter: 0.6mm ,0.8mm,1.0mm,1.2mm,1.6mm ...