... gas shielded welding wire ER70s-6 welding carbon steel,500MPa high strength steels,welding in cars,building,bridges copper coated co2 gas shielded welding wire AWS ER70s-61) welding ... in shipbuilding,Bridge building, machinery manufacturing and general welding purposes3) sizes: 0.8mm,0.9mm,1.0mm ... .Before welding please clean out the oil,rust,water etc from the work parts co2 gas shielded welding wire ...