Cool type drawing steel tube

The utility model relates to a cool type drawing steel tube, comprising a duct front support, a duct and a duck back support for making a wire pass through and communicated with each other in turn and a guide nozzle for toggling the front part of the wire, a water cooling envelop nested with outside of the duct, wherein two heads of the envelop are respectively provided with a water-in joint of the cool water and a water-out joint. The cool type drawing steel tube uses a cycle cooling device to cool the drawing steel tube, therefore the performance of the drawing steel tube for resisting series deformation is reinforced, the hit rate of the work position switch of the drawing steel tube is increased, the failure rate of the high-speed wire mill is reduced, the service life of the drawing steel tube is prolonged to facilitate promotion and implementation.