Uses Equipment apply to steel pipe and the flange carbon steel workpiece automatic circumferential welding, ensure the high efficiency, high degree of automation, weld forming uniform appearance, convenient and reliable use, good welding quality. Features The welding gun fixation, the workpiece rotation, 45 degree or level welding of welding position. The 3D of welding torch can be fine-tuned, the manual displacement of flip headstock can be adjusted, adapt to many varieties of welding. Four-claw homemade clamping. Man-machine interface can change the parameters. High degree of automation. The machine has a single gun, single-supply, to improve efficiency, reduce welding deformation. Beautiful welding forming, stable performance, easy operation, high efficiency, the choice of the aircraft can improve not only labor productivity and working environment, but also the stability and reliability of product quality ,it is the ideal equipment for specialized production.