... ARC MMA Welding equipment competitive price, guaranteed welding quality, enery saving, durable and portable. DC Inverter ARC MMA Welding equipmentModel No: ... be applicable to welding carbon steel, stainless steel, alloy steel and cast iron, etc.2)The inverted frequency reaches 100kHz, ... features of highly abrupt reduction of constant current, high steady-state output current, strong ability to resist ...