... 50-120Khz 2. MOSFET Technology 3. Induction Heating Machine 4. Copper Pipe Brazing 5. High Reliability 1. metal tube welding: such ... as copper tube, steel tube, and aluminum tube’s butt welding, plug ... as alloy turning, milling cutter, planer, saw blades, reamer, boring knife.3. carbide saw blade welding: diamond saw blade welding, marble ...