... year. 3.Thickness:1.6-5.0mm Inverter DC Arc Welding Machine(ZX7-400) 1.CE,OEM Certificate2.Warranty 1 year. 3.Thickness ... . easy to arc initiation, resistance to interference , good force adjustment3. Stable welding current, low welding spatter4. Good welding result, deep welding pool, high ... case0.93Cooling methodAir coldOverall dimension560*330*530Weight34kg Inverter DC Arc Welding Machine(ZX7-400)