a. Powder coating, which is a new type of coating that does not contain solvents and is formed by melting powder into a film. Epoxy powder coating is commonly used in anti-corrosion projects. Compared with traditional solvent-based anti-corrosion coatings, it has the advantages of no solvent pollution, easy coating, rapid curing, and excellent performance. It has been widely used in the chemical industry and petroleum pipeline anti-corrosion abroad since the 1960s. In the 1990s, with the chemical industry, With the development of the petrochemical industry, the anti-corrosion requirements for pipes, especially buried pipes, got higher and higher, and epoxy powder coatings attracted attention.

b. Zinc-rich paint. It is a paint containing a large amount of magnesium powder. Its zinc powder content is between 85-95%. The coating film is only 100 microns thick. It has low cost and excellent performance.

c. Fluorine-containing coatings, such as the GSC-CS system in the United States, are a new type of fluoro resin coating that has a service life three times longer than that of general coatings. It is resistant to various chemical media and has an operating temperature of 260°C. It can be used as containers, tanks, mixing equipment, and auxiliaries. Equipment surface coating.

d. Flake coating, composed of glass phosphorus flakes and corrosion-resistant thermosetting resin, has excellent anti-corrosion properties and anti-penetration properties. For example, glass flake polyester and vinyl coatings are used in flue gas desulfurization devices abroad with good results, and can also be used as sealing materials for equipment joints. The Japanese patent introduces an epoxy resin coating containing flake stainless steel powder, which is coated on the metal surface. The durability of the coating is up to three years, which is better than other coatings.

e. Conductive coating. Some equipment must be anti-corrosive and anti-static, such as gasoline tanks. Research on conductive coatings abroad is very active. Many companies in Japan and the United States produce such coatings. The main direction of research on conductive coatings is to develop new conductive fillers with high conductivity and low cost to reduce costs.

Anti-corrosion coatings for anti-corrosion steel pipes are widely used. To improve their service life and application scope, foreign coating research and application mainly focus on two aspects: materials and construction methods. According to statistics, 75% of coating corrosion damage is caused by improper handling of the substrate. Therefore, research and development of new materials and strengthening construction quality management are equally important. According to a Japanese survey, among the existing coatings, epoxy polyurethane coatings, zinc-rich coatings, coal tar enamels, etc., as long as the base layer treatment is qualified and the construction is organized strictly according to the requirements, the use effect is still very ideal.