pipe welding machine 1,Low energy consumption 2,Easy operation 3,Light weight 4.High efficiency high frequency pipe welding machine 30KWProduct performance characteristics and application field:1. the unique welding circulation system, ensure machine 24 hours of continuous work2. 2 variety complete, with high frequency uhf series, power (KW) has 16 36 50 60 80 120 series etc3. small volume light ...