The key factors in the selection of cold drawn tubes

- Aug 25, 2020-

The cold-drawn cylinder is made of hot-rolled tube. The selection of the material, specifications and quality of the hot-rolled tube directly affects the drawing process and the quality of the finished product. When selecting materials, generally choose materials with low hardness and good plasticity when the strength is guaranteed; the specifications of the steel pipe should be selected according to the specifications of the finished product to ensure that the elongation is between 20% and 40%; Small, the strength of the surface of the finished product can not be guaranteed; it is best to select the steel pipe placed 0.5~2a after hot rolling, the time is too short, the surface of the steel pipe is corroded and the time is too long.