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The large arm hydraulic steel tube must be phosphating

We make the large arm hydraulic steel pipe for the acid washing phosphating process, what is the acid washing phosphating?
Simply said: pickling phosphating is the process of metal surface treatment.
Acid washing refers to the use of acid solution (such as hydrochloric acid, sulfuric acid, etc.) to clean the metal to remove the surface rust and dust, etc.;
Phosphating is a treatment method;
Phosphating fluid: zinc phosphating fluid, manganese phosphating liquid, etc., have many kinds of functions, and different functions;
Phosphating is to use phosphating liquid to soak the acid washed the metal, to form a layer of oxide film on the surface, one is to be able to prevent rust, the second is to improve the adhesion of the paint, three is to have the corrosion resistance.

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