... %Cooling water temperature< 50°CApplicationStandard parts, gear shafts, heat treatment of steel bars Main feature 1.light weight, ... can be changed easily to heat different parts.6.multi-display functions, with displays of over current, over voltage, water failure, phase ... welding.3, metal quenching, annealing, quenching, tempering and heat treatment.4, metal forging, hot forming.5, powder metallurgy ...