ZX7-400amp heavy duty welding machine 1,low price, energy saving. 2,mosfet design ... 3,Welding thickness:2.0-12.0 ZX7-400amp heavy duty welding machine A.Feature and Application 1.Advanced Inverter technology ... Output Voltage36VDuty Cycle60%Rank of InsulationFRank of ProtectionIp21No-load Loss80wEfficiency85%Net Weight(kgs)25Net Diemension(mm)545×310×440Welded Materialstainless steel ...