... carbon steel,500MPa high strength steels,welding in cars,building,bridges copper coated co2 welding ... applications: Widely used as welding carbon steel wires in shipbuilding,Bridge building, machinery manufacturing and general welding ... D300mm K300mm 1kg,5kg,15kg,18kg,20kg chemical composition of welding wire(%)CMnSiPSCrNiCu0.06~0.151.40~ ... 5(%)AKV impact(J)≥420≥500≥22≥27(-29) Wire Size(mm)φ0.8φ1.0 ...