three phase AC/DC arc welding machine 1. Use moving coil type structure, the main ... output has AC and DC two kinds of voltages, not only may use 2-8mm acidic welding rod, low-carton ... 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. ITEMZXE1-250ZXE1-315ZXE1- ...