high frequency welding machine 1 Pipe specification:O.D 8~610mm 2 Steel pipe thickness: 4.0~20.0mm 1. CompositionThe whole set of Solid State High Frequency Welder is composed of rectifying cabinet, inverter and output cabinet, connecting optical fiber, closed loop water cooling system, central operator console, mechanical adjustment device, etc; 2. Main design index for solid state high ...