Precision seamless pipe is a high-precision steel pipe after cold rolling or cold drawing. Due to the advantages of precision seamless steel pipes having no oxide layer on the inner and outer walls, no leakage under high pressure, high precision, high smoothness, no deformation and no cracks in cold bending, flaring, flattening, etc., the specific differences are as follows;
1. The obvious difference between precision seamless pipes and seamless steel pipes is the high dimensional accuracy, which can reach 0.05mm.
2. The inner and outer diameters of precision seamless pipes have high surface finish and can be used directly by users without processing; ordinary seamless steel pipes need to be turned and polished
3. The outer diameter is small.
4. High precision and can be produced in small batches.
5. Cold drawn products have high precision and good surface quality.
6. The cross-sectional area of the steel pipe is relatively complex.
7. The steel pipe has excellent performance and the metal is dense.
8. Different calibers
The outer diameter of ordinary seamless steel pipes is greater than 38mm and can reach 1020mm.
Finish-rolled seamless steel pipes can be produced in smaller diameters, generally 6-200mm.
9. Different production execution standards
The implementation standards for ordinary seamless steel pipes include GB8163 fluid pipe, GB8162 structural pipe, GB3087, GB5310 high-pressure pipe, etc.
