... device 3.Quick heating 4.100% duty cycle design HF induction welderCompany Brief Introdution:ZhengZhou GuoYun Electronics Thchnology Co., ... It reduce labor intensity Technical parameters Working Power (V/Hz)single-phase 220V/50HzCurrent35AOperating voltage220VInput power16KWOscillation frequency20-35KHZEfficiency90%Duty ... ,geological drill bit welding4,Grinding tools, hole saw HF induction welder