May I ask everyone about the specific functions of the rust-inhibiting primer, intermediate coat, and topcoat for pipes?

This post was last edited by Keep running on 2017-3-14 at 14:27. Primer is mainly applied directly to steel surfaces that have been shot blasted or treated in other ways; its functions include sealing, improving adhesion, filling gaps, and providing corrosion protection. The intermediate coat primarily serves to increase the overall thickness of the coating, improve its resistance to penetration, and enhance the anti-corrosion properties of the entire coating. The corrosion resistance of a coating sometimes depends on the total film thickness of the entire coating system. Some functional primers should not be too thick, while topcoats are relatively expensive; therefore, using intermediate coats appropriately allows for maintaining an appropriate total film thickness while reducing the amount of topcoat needed and thus lowering the overall cost. Currently, intermediate coats are generally made as high-solid-content thick-film coatings. The main functions of the topcoat are decoration and protection, offering resistance to atmospheric corrosion, acid mist, and ultraviolet rays.

The primer is used to enhance adhesion to the metal; the intermediate coat adds thickness (an uneven or too thin thickness is ineffective); the topcoat serves a protective purpose (mainly providing wear resistance)

Primer is mainly applied directly to the surface of steel that has been shot blasted or treated in some other way; its functions include sealing, improving adhesion, and providing corrosion protection. The intermediate coat primarily serves to increase the overall thickness of the coating, improve its resistance to penetration, and enhance the anti-corrosion properties of the entire coating. The corrosion resistance of a coating sometimes depends on the total film thickness of the entire coating system. Some functional primers should not be too thick, while topcoats are relatively expensive; therefore, using intermediate coats appropriately allows for maintaining an appropriate total film thickness while reducing the amount of topcoat needed and thus lowering the overall cost. Currently, intermediate coats are generally made as high-solid-content thick-film coatings. The main functions of the topcoat are decoration and protection, offering resistance to atmospheric corrosion, acid mist, and ultraviolet rays.

Primer is mainly applied directly to the surface of steel that has been shot blasted or treated in some other way; its functions include sealing, improving adhesion, and providing corrosion protection.

Applying the primer increases the adhesion to the metal; the intermediate coat adds thickness (an uneven or too thin thickness is ineffective); the topcoat serves a protective purpose (mainly providing wear resistance). I think the answers from above are all very good, and I’ve learned quite a bit from them