Finished ensure seamless steel pipe with a smaller curvature mainly by straightening machine to complete. In order to eliminate the seamless steel pipe bending, seamless steel tubes have to go through all the cold straightening.

Seamless steel pipe bending rolling mill is due to improper adjustment, residual stress remaining as a result of rolling along the tube length of the cooling section and unequal causes. Therefore, it is impossible to obtain a very straight pipe directly from the mill, only straight pipes by cold bending of the school to meet the prescribed technical conditions.

The basic principle is to make the seamless steel pipe straightening elastic-plastic bending, bending by a large degree of curvature becomes small, and therefore in the steel straightening machine must be subjected to repeated bending. The degree repeated bending steel mainly determined by adjusting the straightening machine.

Factors affecting the quality of a lot of alignment, such as the curvature of the original pipe, pipe sizes and materials straightening machine type, adjust parameters.