Long life Tube Butt Welding Machine for Welding Aluminium-Copper Tube DESCRIPTION This machine-series 2 could choose the function of three times discharging. As for welding aluminium-copper tube, this machine possesses the function of preheat and welding anneal and is specially equipped with parallel straight slideway to ensure the parallel pressure of forging power of the welding product so as to achieve smoothness and firmness on the connecting position. Except for the