... , and pool uniform, minimum spatter, even small current welding, is not so easy in arc welding and bonding undesirable phenomenon.Grid voltage compensation ... less than 100 W, as compared with conventional welding machine, to save electricity by 50%. Welding low carbon steel, high-strength steel and ... ×450650×320×670650×320×670650×320×670650×320×670 IGBT Inverter DC arc welding machine(ZX7 series)