Precision bright tube is a high-precision steel pipe material that has been processed through precision drawing or cold rolling. Due to the lack of oxide layer on the inner and outer walls, high pressure resistance without leakage, high precision, high smoothness, no deformation during cold bending, expansion, flattening without cracks, etc., precision bright tubes are mainly used to produce products for pneumatic or hydraulic components, such as cylinders or oil cylinders, which can be seamless tubes or welded tubes.