There are many difficult problems in drill pipe construction, and rust is a very common one. Rust on the drill pipe will greatly shorten its life. Therefore, during operation, it is important not only to pay attention to the correct use method but also to the maintenance after construction and the anti-rust measures of the drill pipe.

　　1. The builder can choose a suitable rust remover according to the type of geological drill pipe, the surface condition, and the dimensional accuracy and surface quality of the parts. Or use chemicals to use chemical reactions to dissolve the rust products on the metal surface. The principle is that the acid dissolves the metal, and the hydrogen generated in the chemical reaction causes the rust layer to fall off mechanically. Commonly used acids include hydrochloric acid, sulfuric acid, phosphoric acid, etc.;

　　2. Coating anti-corrosion is carried out in professional factories, and the construction quality is guaranteed;

　　3. Phenolic resin modified epoxy resin coating and epoxy polyurethane coating are very effective for anti-corrosion of drill pipe.