... machine tig welding machine 1.CE,CCC,ISO9001 approved 2.AC-DC dual-use 3.High quality 4.Reasonable price ModelWSE-250WSE ... blow(S0~20~5 Duty Cycle(%)6060 Decay time(S)2-102-10 After flow(S) Efficiency(8585 Duty Cycle(%)6060 ... as carbon steel, stainless steel, alloy,steel, copper, titanium, etc.2.Remote foot pedal controller, adjustable current3.With complete accessories4. Perfect ...