Seamless steel pipes usually need to be painted and beveled before leaving the factory. These processing steps are to enhance the performance of steel pipes and adapt to different engineering needs.

The main purpose of painting is to prevent steel pipes from rusting and corroding during storage and transportation. Painting can form a protective film on the surface of the steel pipe, isolate air and moisture, and extend the service life of the steel pipe. Painting is particularly important for steel pipes that need to be stored for a long time or used in humid environments.

Bevel treatment is to facilitate the welding of steel pipes. Seamless steel pipes usually need to be welded when connected. Bevel can increase the welding area and ensure the firmness and sealing of the weld. Especially in pipeline systems used in high-pressure and high-temperature environments, bevel treatment can significantly improve welding quality and prevent leakage and rupture.

For specific standards of seamless steel pipes, such as ASTM A106, ASME A53 and API 5L, the following treatments are required during processing:

Cutting: Cut into the required length according to customer requirements.
Painting: Apply anti-rust paint to the surface of the steel pipe.
Bevel: Bevel treatment is carried out as required, usually including single V-shaped and double V-shaped bevels.
Straightening: Ensure the straightness of the steel pipe for easy installation and use.
Hydrostatic test: Perform hydrostatic test on the steel pipe to ensure that it can withstand the specified pressure and meet safety standards.
Flaw detection: Use non-destructive testing methods such as ultrasound and X-ray to check the internal defects of the steel pipe to ensure its quality.
Marking: Mark product specifications, standards, manufacturer information, etc. on the surface of the steel pipe for easy traceability and management.
These processing steps ensure the reliability and safety of seamless steel pipes in various applications and meet the strict requirements of steel pipes in different industrial fields.