... year. 3.Thickness:1.6-5.0mm Inverter DC Arc Welding Machine(ZX7-400) 1.CE,OEM Certificate2.Warranty 1 year ... easy to arc initiation, resistance to interference , good force adjustment3. Stable welding current, low welding spatter4. Good welding result, deep welding pool, ... capability.7. Applicable for various acid and basic welding electrodes 8. Down hand cellulose electrodes available MODELARCZX7- ...