... machine for pipe and tube, IGBT design, used for pipe and tube induction heating, annealing. 160KW Induction heating for pipe and tube 1. ... %Cooling water temperature< 50°CApplicationStandard parts, gear shafts, heat treatment of steel bars main feature 1.light weight, ... welding.3, metal quenching, annealing, quenching, tempering and heat treatment.4, metal forging, hot forming.5, powder metallurgy ...