... . Welding stainless steel, high alloy steel, copper, silver, molybdenum ZX7-160S, ZX7-200S, ZX7-250S, ZX7-315S, ZX7 ... alloy steel, copper, silver, molybdenum, titanium and other metals. Characteristics:Ideal static external characteristics and good dynamic property.Ensure high ... stability of welding current under electric fluctuation and adjustment of arc length. Self-control ability of ...