... such as gas, oxygen, acetylene, coking coal, electric furnace, high frequency tube etc.),the thermal efficiency 0f 95%, low consumption 7 ... , no pollution,light weight and small volume ModelWH-VI-80Worker power Three phrase 380V/50HzWorking voltage range (AC)342V~430VMax ... quenching, work piece forging, blankTemperature protection 50 degrees High Frequency drill bit and splined shaft quenching 80KW