This series of high frequency induction heating equipment consists of self-excited electronic tube oscillators and has already been universally applied during the process of thermal treatment, specifically in the field of thermal treatment of metal component surface like quenching, annealing, tempering, drill bit welding, saw blade welding, motor rotor welding, tungsten rod annealing as well as single crystal drawing, characterized by a short period of equipment heating, a high production efficiency with superior quality, and easily controllable techniques for the convenience of flow process and manufacturing automation. Main model, technical parameters and range of application : ModelOscillation power (KW)Output power (KW)Oscillation frequency (KHz)Power capacity (KVA)Processing diameter (mm)Quenching depth (mm)Cooling hydraulic pressure (Mpa)Overall size (mm)Typical applicationGP15-C31510300-4503-phase 380V 25 KVA301-1.50.21000×800×1800Quenching, annealing, tempering, diathermy, metal smelting, welding of drill bits, saw blades, steel tubes and motor rotors, as well as tungsten rod annealing