Seamless steel pipes require various anti-corrosion treatments depending on their use and environmental conditions. These treatments extend the service life of the pipes, reduce maintenance costs, and improve safety. Below are the common anti-corrosion methods used for seamless steel pipes.
External Anti-Corrosion Coating
Description: Coats the outer surface of the pipe with an anti-corrosion material to prevent direct contact with the external environment.
Materials Used: Asphalt coal paint, epoxy coal paint, acrylic paint, 3PE external anti-corrosion.
Advantages: Simple to operate, low cost, does not require special equipment.
Limitations: Less effective in harsh environments such as marine settings.
Internal Anti-Corrosion Coating
Description: Coats the inner wall of the pipe with anti-corrosion material to protect against internal corrosion.
Materials Used: Epoxy coating, epoxy glass cloth, polyurethane.
Advantages: Prevents oxidative corrosion inside the pipe and protects against corrosive liquid chemical media like acids and alkalis.
Galvanized Anti-Corrosion
Description: Applies a layer of zinc on the surface of the pipe using a hot-dip galvanizing process.
Advantages: Good corrosion resistance, long service life, improves mechanical properties and operating temperature range of the pipes.
Spray Anti-Corrosion
Description: Uses spray equipment to evenly apply anti-corrosion coating on the pipe surface, forming a uniform and dense protective layer.
Materials Used: Acrylate, alkyd resin, chlorinated rubber.
Advantages: Easy to construct, good anti-corrosion effect, long service life.
Electrodialysis
Description: Coats the pipe wall with a conductive layer and applies voltage to cause metal ions to migrate and form a protective film through electrochemical reactions.
Advantages: Provides passive protection, prevents corrosion, and enhances the mechanical properties of the metal.
Cathodic Protection
Description: Applies electric current to the pipe surface, turning the pipe wall into a cathode to prevent corrosion.
Types:
Physical Protection: Direct application of protective current.
Electrochemical Protection: Divided into current method and potential method.
Advantages: Reliable, economical, environmentally friendly, simple operation, and low cost.
These methods are selected based on the specific requirements and environmental conditions of the seamless steel pipes, ensuring optimal performance and longevity.
United Steel Industry As the most important steel pipe manufacturer and exporter in China, in the past 20 years, we have completed more than 100 projects, with partners in more than 100 countries, and established relationships with oil and gas and EPC companies in many countries business relationship.
For more information about the product price, catalog and rolling mill inspection certificate,
please consult:Email:Sales@usisteels.com
