20KVA high frequency HF induction welder portable, MOSFET design, used for induction welder machine portable, forging. HF induction welder1.Technical parameters:Rated Power ... ~0.3MPaCurrent input45A < 50°CEfficiency90% Duty cycle100% ApplicationQuenching, annealing, conditioning saw blades, drill, turning welding standard parts of axial etc fastener ...