A. TECHINICAL PARAMETER 1. Range of application φ12--φ40 2. Oil pump output 5L/min 3. Rating Power less then 60Mpa 4. Total power of electric (al) motor 4KW 5. Piston motion distance 100mm 6. Out dimension 1225*570*1100mmB. Processing step: 1: The ends of the bars to be joined are cut square and enlarged by cold forging to increase their core diameter and so ensure that the joint is stronger than the bar. The couplers are usually supplied attached to the reinforcing bar. 1. First use the upsetting machine to thicken the end of the rebar end, 2. Then use the steel bar threading (cut) machine to make thread on the end of rebars. 3. Connect the two rebar end with the upsetting rebar couplers.