This equipment can produce screw threads on rebars of HRB335,HRB400 and RRB400 with Φ12,14,16,18,20,22,25,28,32,36 and 40 without pretreatments such as upsetting and rib-stripping .The electric devics on the equipment have self-locking ,mutual-locking and over-heat protection functions .Im addition ,a stroke switch,which is adjustable ,is also available ,is also available to facilitate length specification .In operation ,just press the start button and the rest will be completed automatically by the electric devices and the stroke switch.Welcome to contact us.