1. The main feature of general ordinary seamless steel tubes is that they have no welding seams and can withstand greater pressure. The product can be very rough cast or cold drawn.

2. The dimensions of the inner hole and outer wall of the cold drawn precision steel pipe have strict tolerances and roughness.

Features of cold drawn (rolled) precision steel tubes:

1. The outer diameter is smaller;

2. High precision can be used for small batch production;

3. Cold-drawn (rolled) finished products have high precision and good surface quality;

4. The cross-sectional area of the steel pipe is more complicated;

5. The performance of the steel pipe is more superior, and the metal is more dense.