Cold rolled stainless steel tube with the main production process of cold drawing, supplemented by 50% to 80% of the stainless steel finished products need to cold. Therefore, the cold working process equipment has been greatly developed. There are basically three kinds of cold working process, that is drawing process, cold process, cold - cold drawing combined process. Most foreign countries use stainless steel pipe cold rolled - Cold-drawn combination process, and cold-based, supplemented by drawing process. Modern cold rolling mill can be greatly reduced to achieve the wall stainless steel pipe diameter capacity and greatly reduced the amount of deformation of 80% can be completed in the cold rolling mill.

Determined using cold wall, supplemented by drawing specifications and control changes in pipe diameter, different sizes and varieties to meet production requirements. Cold - cold drawing process has the advantage of joint production: good quality steel pipe, cold rolled steel pipe wall thickness accuracy and surface quality high, high precision cold drawn steel pipe diameter; cold period is short, reducing the fat middle, heat treatment, necking, straightening processes and metal consumption and save energy; shortage of large size can be used to produce small size steel pipe material, simplified types of raw material specifications. Currently, the world's cold-rolled and cold-drawn process technology and equipment level has been greatly developed.

Cold rolling mill forward speed, long travel, ring pass, high-precision direction. The rolling machine of the features are as follows.The vertical inertia force and inertia torque balance of body, rolling machine and from the increased frequency. By loop hole, rolling the length of the block captain than the rolling short stroke 70% rolling improve the uniformity, increased feeding. Using a long tube, pipe shortage of raw materials can increase the length of 12 ~ 15m, improve the utilization of rolling machine, rolling over the efficient utilization coefficient of 0.80. Using curved mandrel and the best parabolic groove, metal deformation and reasonable to raise the tool and die life.

These characteristics, so that the production capacity of cold rolling mill products and the dimensional accuracy greatly improved. Production of stainless steel tube drawing tube machine structural drawing of the machine is still the main chain, there are a few hydraulic drawing tube machine. Multi-line, high-speed, automatic is a drawing of the machine development. There are also warm rolling technology, it is the former cold-rolled stainless steel tubing through a heating device to heat induction to 150 ~ 400 and then the rolling. Warm rolling technology has the rolling force is small, the advantages of a large deformation of 0Cr18Ni9Ti stainless steel tubes 2 to 3 times warm rolling, without the need for intermediate annealing, the total deformation of up to 98%.