... welding machine/ cast iron welding device / mold welding device/steel cold welding device Main parameters: 1.Model:SZ-082. ... material, aluminum alloy, copper material, copper alloy, low carbon steel, medium carbon medium, die steel, stainless steel, casting steel, cast iron, cast aluminum, tungsten carbide alloy, ... examples: cast iron welding device / mold welding device / steel cold welding device