WSE series welding machine Model No:WSE200,WSE250, ... (DC TIG) 30-200A(AC TIG)30-160A(stick), 10-250A(DC TIG) 30-250A(AC TIG)30-200A(stick), 10-315A(DC TIG) 30-315A(AC TIG) ... ~2sec Post-flow time:0~10sec Output AC frequency:70Hz square AC balance: 50%-90% EN Duty cycle: ... switch operation modes:MMA/TIG,AC/DC 4, AC TIG welding for aluminum,magnesium and their alloys. 5, DC TIG welding for stainless steel ...