three phase AC/DC arc welding machine 1. Use moving coil type structure, the main ... of voltages, not only may use 2-8mm acidic welding rod, low-carton steel, low-alloy steel and so ... on material, but also may use the alkalinity welding rod to weld carton steel, alloy steel, as well ... as cast iron welding and so on metal, moreover the welding electric arc is stable. ITEMZXE1-250ZXE1- ...