Why do aluminum tubes have such excellent characteristics? The reason lies in the layer of aluminum oxide film on the pipe wall. There is a process called surface treatment in the production process of aluminum pipes. The purpose of the treatment is to solve the problems of corrosion resistance, decoration and functionality of the profiles.

Aluminum alloy compressed air pipeline has excellent corrosion resistance, acid and alkali resistance, which can provide clean compressed air and maintain the normal operation of the equipment.

This method has low technology, low processing cost and good processing performance, and is widely used in the military electronic industry.

There are various oxidation methods. Before surface treatment of aluminum pipes, different oxidation treatment processes shall be selected according to their own requirements:

1. Coating organic protective layer (coating and other organic coatings) - used for external protection and decoration of equipment, which is usually operated on the basis of oxidation.

2. Coloring after anodizing - various colors are formed on the oxide film to meet certain use requirements, such as black for optical instrument parts and gold for commemorative badges.

3. Conductive oxidation - maintain the conductivity of the aluminum tube while enhancing the protection ability.

4. Anodizing - a layer of dense aluminum oxide film is produced on the surface of the aluminum tube, which reacts with the air again to improve the protection performance of the aluminum tube. At the same time, the oxide film isolates the internal free ions, making it unable to conduct electricity.

5. Chemical oxidation - used for general protection, with ordinary processing technology difficulty and low production cost.

There is a special method for surface treatment called aluminum conversion film process, which is called "chromate conversion film for aluminum and all aluminum aluminum tubes". The aluminum profile produced by this method can not only achieve the conductive effect, but also enhance the protective ability of aluminum. It is a technology specially researched for enhancing the conductive effect and protective ability of aluminum.