Cold rolling is a processing method in which a metal blank is placed in a cold rolling equipment, and a pressure is applied to the blank through a convex die fixed on a press at room temperature, so that the metal blank undergoes plastic deformation to produce a part.

Positive cold-rolling, reverse cold-rolling and composite cold-rolling are the three most widely used cold-rolling precision tube skills. Their metal movement direction is parallel to the axis of the punch. Therefore, many materials also call these three methods as axial kneading. As mentioned before, axial kneading can produce various solid and hollow parts, such as ball pins, bobbin cases, cartridge cases, and the like. Radial cold rolling has only been developed in the past ten years, and it is mainly used for dials of communication equipment and bicycle keyboards.

The above are several fundamental cold-rolled precision tube deformation methods. Following the development of cold-rolled precision tube skills, sometimes cold volume die forging is also classified as cold kneading.

Cold-rolled precision tubes are widely used in the electromechanical production of cars, tractors, bearings, telecommunications equipment, and exteriors, and are still widely used in light industries such as bicycles and sewing machines, as well as in the national defense industry system. This is because it has significant advantages .