Cold-drawn tube unit (cold-rolled and wire-drawn tube) cold-rolled, cold-drawn or cold-rolled and cold-drawn combination of cold processing technology, used for the production of pipe packaging combination. It is a hot-rolled welded pipe or pipe deep processing unit.


Different processing methods and corresponding auxiliary processes are selected according to metal processing performance, pipe size, quality requirements, investment and benefits. The basic steps of cold-drawn pipes are: (1) fuel supply pipes for hot-rolled finished pipes or semi-pipes, extruded pipes and welded pipes; (2) pipe preparation, including inspection, binding, pickling, cleaning, washing, drying, coating lubricants; (3) cold-rolled or cold-drawn; (4) finishing of finished products including heat treatment, straightening, sampling, cutting head and tail, inspection (various manual inspections). And inspection), hydraulic test, oiling, packaging, storage and so on. Different products have different contents.


The characteristic is that the production of cold tube mill is expected to produce work hardening after several times of cold deformation after the tube is processed into the finished product, so the preparation steps of the whole production process are composed of multiple deformation processes and components, and have periodic characteristics. Therefore, more steps, long production cycle, high metal consumption, low production efficiency, generally do not produce on a large scale.