WSE series welding machine Model No:WSE200,WSE250,WSE315 Voltage:single ... Output AC frequency:70Hz square AC balance: 50%-90% EN Duty cycle:60% Pilot arc model:high frequency Max.welding ... arc,easy to fill the wire 2, small size,light weight,easy to move 3, easily switch operation modes:MMA/TIG,AC ... /DC 4, AC TIG welding for aluminum,magnesium and their alloys. 5 ...