Used for transporting black metals such as long slabs and bars. Rotation is achieved in two forms, one is the hanging beam rotation, which is a double-layer structure. The upper hanging beam is wrapped with a pulley group and a steel wire rope, and the lower hanging beam is equipped with multiple electromagnetic suction cups or clamps, which can rotate at a certain angle with the driving mechanism. Another form is car rotation, which means the car is a double-layer structure, with a lifting mechanism arranged on the upper car and a running car on the lower car. A circular track is laid on top, and the upper car can rotate along the circular track.