If the cold treatment method selected for seamless steel pipe is not correct, its performance will be affected to a certain extent. Therefore, preventive measures must be taken during the cold treatment process, but most people do not know how to do it well. In fact, the main content of cold treatment lies in the following points.

Seamless steel pipes are divided into three categories according to their mechanical properties:

(1) soft state
The mechanical properties of seamless steel pipes after solution treatment meet the requirements of product standards. The seamless steel pipes have good corrosion resistance and are easy to cold work.

(2) Chilled state
After a certain degree of cold deformation, the mechanical properties of seamless steel pipes are improved.

(3) Semi-cold state
The degree of deformation is less than that of the cs seamless pipe processed in the cold and hard state, and the mechanical properties are between the soft state and the cold hard state, which is suitable for light processing and forming.
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