What is the straightening principle of steel pipes?

The purpose of the straightening process is to eliminate the bending of steel pipes during rolling, transportation, cooling, and heat treatment processes, and also to reduce the ovality of steel pipes.

The straightening effect is mainly achieved by adjusting the middle roller, which generates longitudinal repeated bending of the steel pipe. At the same time, each pair of straightening rollers also applies a certain pressure to the steel pipe, causing repeated elliptical deformation of the cross-section of the steel pipe.

The combination of elliptical deformation and bending deformation promotes the formation of a plastic deformation zone in the direction of the body axis during the deformation process of the steel pipe.

During the straightening process, each cross-section of the steel pipe undergoes continuous and repeated bending along the transverse direction in this plastic zone, while the bending deformation gradually decreases, achieving the effect of straightening the steel pipe.

Changzhou Chengxin Metal Products Co., Ltd. has developed into two major industries: hydraulic cold drawn precision pipes and high-frequency welded pipes.