... -250S, ZX7-315S, ZX7-400S, ZX7-500S, ZX7-630SIGBT inverter manual arc welding machineCharacteristics and application:Application: 1. Welding carbon steel ... .95Weight5kg6kg21kg 22kg27kg37kg45kg Overall dimension380*185*290mm570*320*460mm600*360*490mm670*400*610mmWelding electrode diameter1.6-3.2mm2.0-4.0mm2.0 ... (L/min)25L/min ZX7-400S, ZX7-500S IGBT inverter manual arc welding machine