Automatic steel door frame production line utilizes cold bending to achieve one-step shaping of various types of steel and stainless-steel door frames. Through hydraulic punching and shearing, it automates the process of hole formation and section cutting. This metal door production line adopts a post-punching technique, which avoids situations where certain holes cannot be punched or deformation occurs during the shaping process. By performing the shaping process before punching the holes, it minimizes changes to the roll forming machine, making it easier for customization of individual machines in the production line. Additionally, we offer two options for material storage: storage devices and pits, depending on your specific requirements.