Cold-rolled, cold-drawn or cold-rolled and cold drawn combination of cold working process for the production of pipe package of equipment combinations. It is the hot-rolled welded pipe or tube depth processing units.

Based on the processing properties of the metal, pipe size, quality requirements as well as investment and benefits to choose different processing methods and corresponding auxiliary processes.

The basic step of cold-drawn tube are:

(1) the fuel supply pipe, the pipe materials used for hot-rolled finished tube or semi-tube, squeeze tubes and welded pipe

(2) pipe material preparation, including checking, bundling, acid washing, cleaning, washing, and drying, coating lubricants

(3) cold (cold-rolled or cold-drawn)

(4) finished finished finishing including heat treatment, straightening, sampling, cut head and tail, checking ( inspection and testing of various artificial), hydrostatic testing, oiling, packaging, warehousing and so on. Different product finishing content vary.

Features cold pipe mill production is expected from the tube into processed into finished products usually after several cold deformation and produces work hardening, thus the entire production process preparation step by a plurality of deformation processes and composition, and has the characteristics of cyclical and therefore more step , long production cycle, large metal consumption, production efficiency is low, generally are not large-scale production.

Configured in chiller cold drawn and cold-rolling mill is conducive to play their respective advantages, especially for the production of stainless steel, high alloy steel tubes and non-ferrous metal pipe hard deformed more reasonable and necessary. Drawing machine has a single and a plurality of straight pulling machines and reel extubation (see reel extubation). When a single cold drawn pipe length of 50m, a few hundred meters up reel extubation. Drawing machine tonnage minimum 30kN, up to 7000kN. There are two conventional cold rolling mill roll cold rolling mill and cold rolling mill two types of multi-roll.