Roll thread not cut thread, so could protect the highest tensile strength of parent metal. It meets requirements in JGJ107, ACI318, BS8110, DIN1045 and UBC1997 etc. Easy to operate. Automatic opening-closing mechanism for rib peeling device, need only 30 seconds to finish a threaded end. Peel ribs and roll threads by the same machine, so could save labor and improve productivity. Widely used. Be able to process rebar diameter 16-40mm. Environment-friendly, safe, no environment and weather restrictions. Economic, low investment for the equipment