Induction Heater, Solid State Hf Welder, High Frequency Welding Machine manufacturer / supplier in China, offering Solid State High Frequency Low Carbon Steel Tube Welding Machine 250kw, Solid-State High Frequency Welder for ERW Tube Mill with CE Certificate 250kw, High Efficiency Solid-State Hf Welder for ERW Tube Manufacturing 250kw and so on.