When we bend the skeleton body of the hollow square steel, our factory designs and manufactures the hydraulic pipe bending machine, which can bend different angles and curvatures of different profiles. At present, the domestic metal bending process has been extended from traditional round pipe bending to rectangular and other aluminum door and window profiles, and has been developed to mechanically bent large diameter equipment due to manual bending, and then transitioned to hydraulically driven pipe bending machine equipment, and controlled to the microcomputer. Automatic body bend