... maintain. Use general electrode, welding ferrous metal work pieces. Model BX1 630 AC Arc Welding MachineRated input voltage(V)1- ... adjustment, wide range of adjustment;Use general electrode, welding ferrous metal work pieces;Stable arc, little spatter, deep ... penetration, ensure good welding quality;High efficiency, simple structure, easy to operate and maintain. BX1 630 AC Arc Welding Machine