Cold drawing process: the road to high-precision production of seamless steel tubes

Cold drawing process is a common method for producing seamless steel tubes, and the steel tubes produced through this process have extremely high dimensional accuracy and excellent surface quality. The cold drawing process includes multiple steps such as annealing, acid washing, and oil coating, ensuring the performance and appearance quality of the steel tube.

Detailed explanation of cold drawing process:

Annealing: In order to eliminate the internal stress of steel tubes and improve their plasticity and toughness, annealing treatment is required before cold drawing.

Acid washing: The acid washing step is used to remove the oxide scale and impurities on the surface of the steel tube, preparing for the subsequent oil coating step.

Oil coating: Oil coating can protect the surface of steel tubes and prevent rusting during storage and transportation.

Dimensional accuracy and surface quality:

Steel tubes produced through cold drawing technology have very high dimensional accuracy and significantly improved surface quality. This makes cold drawn seamless steel tubes perform well in many applications.