Three Phase Gas Welding Machine 1.no noise 2.three phase optional 3.1 year ... Features:1.IGBT inverter technology,energy saving,power frequency,no noise2.Clear digital meter value showing,PWM pulse width ... %Efficiency85%Insulation gradeBOuter covering protection rankIP21Power factor0.93Weight35kgOutlook dimension760x313x500mm No-load loss40wwelding wire scope0.8-1.6mmStandard accessores:24KD 500A ...