... stable welding current, steady and intensive arc, foot pedal controller interface for safe operation, reliable and durable, easy for ... -voltage protection, over-current protection, under-voltage protection;5. DC welder suitable for stainless steel, alloy steel, carbon steel, ... :welding machine/high frequency welder/electric welding machine IGBT DC/AC inverter TIG/MMA (GTAW)Welding Machine(CE approval ...