Tender For inverter based ac tig welding plant 315 amp. make:- (micro sales,esab,panasonic)specification:-1. input supply 3 phase 415 volt2.insulation class f3.i.g.b.t inverter based technology.4.ocv 70-80vdc5. cooling air type6.electrode use 3.15,4,5mm.7.tig welding torch air cooling