The Single-prop CO2 Automatic Welding Machine is such a facility that can weld circumferential seams outside the oil cylinder automatically.

　　The machine is equipped with the NBC-500 welding power supply units produced; and adopts cooling water circulators for cooling the welding gun to ensure the gun can work continuously; the Mitsubishi PLC-cored electric control system can control every action of the machine, of which the operating console is installed with a touch screen used to change the control parameters, furthermore, the machine can be operated safety and reliably with a lower fault rate, making it an ideal facility to improve the welding quality and efficiency.