Cold drawn seamless steel tube is characterized by no oxide layer on the inner and outer walls, no leakage under high pressure, high precision, high finish, no deformation in cold bending, no crack in flaring and flattening, and rust proof treatment on the surface. The cold drawn seamless steel tube is mainly used for mechanical structure, hydraulic equipment and pneumatic or hydraulic components of automobiles and motorcycles.

The industrial control of cold drawn seamless steel tube production includes die design, annealing, acid pickling, lubrication and other conditions control. Meanwhile, the work of capillary quality inspection and repair should be done well.

Cold drawn seamless steel tube is easy to have some defects in the process of production and treatment, which will directly lead to the requirements of cold drawn seamless steel tube in terms of performance, and even produce certain dangers in the use process, such as: crack, internal fold, external fold, rolling, delamination, scarring, drawing concave, convex, etc. Therefore, in the production process of cold drawn seamless steel tube, we must try to avoid these defects.