UN3 series of copper and aluminum tube butt welding machine is plug-in for resistance welding equipment, it can be used instead of special high pressure flash butt welding machine. System USES a programmable logic controller (PLC) as the logic control unit, dedicated microcomputer welding controller for welding process control unit, using high quality aluminum alloy cylinder and precision oil bearings and precision machine tools with high precision polished rod to ensure the accuracy of mechanical action. Has reliable welding quality, control and adjustment convenient intuitive, high production efficiency, basic no leakage welding leakage phenomenon, production yield higher advantages, at the same time overcome the original welding technology to welded pipe secondary processing and high working voltage accident-prone.

Equipped with constant pressure and secondary constant current control system, ensure the mass production, the welding quality and welding effect.