... steel, stainless steel, aluminum, brass, copper, iron and cast iron LW426 Laser Welding machineSpecifications:TIG Welder - ... Uses a special Tungsten tip, Argon gas, and electricity to weld metal.ARC/MMA Welder - Use ... steel, stainless steel, aluminum, brass, copper, iron and cast iron. Clean, accurate cuts.Air Regulator/Air Filter ... -frequency Contact High-frequency laser welding machine for metal sheet