What are the main anticorrosion processes of steel pipe

Anticorrosion of steel pipe refers to the corrosion caused by chemical or electrochemical reaction caused by the shadow of the pipeline utilization and transport medium in the pipeline utilization and transportation. To usefully prevent or control pipe rot, scientists are seeking a new, higher, more useful principle.
New pipeline anticorrosion skills are emerging, which can be divided into the following examples:
1, grease coating - for corrosion resistance requirements are not high in the atmosphere.
Oil coating therefore dry oil is an important film forming material of a class of coatings. It is characterized by easy production, good brushing, good wettability on the surface, cheap, flexible paint film; But the paint film drying slow, soft film, poor machine performance, acid and alkaline resistance, water resistance and resistance to organic solvents. Dry oil and rust - proof pigment together to form rust - proof paint, for corrosion resistance requirements are not high in the atmosphere.
2. National lacquer
Raw lacquer, also called raw lacquer, lacquer, is one of our specialty. Raw lacquer is a milky, viscous liquid that comes from the bark of a growing sumac tree, and is filtered through mussels to remove impurities. It is painted on the appearance of the object, the color quickly from white to red, from red to purple, a long time can lead to solid bright dark paint film.
Urushiol is an important component of raw lacquer, with its content reaching 30% ~ 70%. In general, the higher the content of urushiol, the better the quality of raw paint.
National paint has strong adhesion, solid film, good light, it is resistant to soil corruption, water resistance, oil resistance. The disadvantage is toxic, easy to make people allergic skin. Other it is not resistant to strong oxidants, alkaline resistance is poor. Now there are a lot of modified raw lacquer coatings, the difference level to overcome the above shortcomings.
3. Phenolic resin coating
Important alcohol soluble phenolic resin, modified phenolic resin, pure phenolic resin and so on. The alcohol-soluble phenolic resin coating has good anticorrosion performance, but the construction is not easy, the flexibility and adhesion are not good, and the application is definitely limited. Therefore, modification of phenolic resin is often necessary. Such as rosin modified phenolic resin and tung oil refining, participate in a variety of pigments, grinding can be made of various enamel, its film is strong, low cost, widely used in furniture, doors and Windows painting. Pure phenolic resin coating has strong adhesion, moisture and heat resistance, corrosion resistance and good weather resistance.