JBG-40B Rebar rib-peeling and thread rolling machine can complete the rib peeling and thread rolling process in one time. The machine's rolling head adopts screw pitch angle mechanism, which is easy to process thread. It has advantages of simple and reliable operation, compact structure, and has fewer spare parts. It also has a unique automatic opening and closing mechanism for the cutting blade. The positioning disc can be used to adjust the dimension freely within the diameter range of φ16-φ32mm. The thread is full, taper degree is extremely small, and the dimensional accuracy is high. It can process right-handed and left-handed thread at the same model.