The cylinder tube adopts rolling sliding table cylinder. Because the surface layer has residual compressive stress on the surface, it helps to close the micro-cracks on the surface hinder the expansion of erosion. Thereby improving the corrosion resistance of the surface, can delay the occurrence expansion of fatigue cracks, thus improving the fatigue strength of the cylinder tube. By rolling forming the cylinder tube, a cold work hardened layer is formed on the rolling surface, which reduces the elastic plastic deformation of the contact surface of the grinding pair, thereby improving the wear resistance of the inner wall of the cylinder tube avoiding the grinding caused. burn. After rolling, the surface roughness value decreases, which can improve the matching properties. The main feature of seamless steel tubes is that they have no welded seams can withstand greater pressure. The product can be very rough cast cold drawn. The cylinder tube is a product that has appeared in recent years, mainly because the inner hole outer wall have strict tolerances roughness requirements.