Pickling passivation/oxidation of stainless steel tubes and treatment methods

Pickling passivation of stainless steel tubes

The chemical process of removing the surface oxidation of stainless steel tubes is called pickling passivation of stainless steel tubes.

Stainless steel tube surface oxidation

The stainless steel tube will have black and yellow oxide scale during the processing. In order to improve the appearance and corrosion resistance of the stainless steel tube, the processed stainless steel tube must be subjected to pickling passivation treatment. Remove the oxide scale produced after welding and high-temperature processing, make the silver bright and bright, and form a layer of oxide film with chromium as the main substance on the treated surface, no secondary oxidation will occur, and the passivation purpose is achieved. In order to improve the surface anti-corrosion quality of stainless steel pipe products and extend the service life of the equipment.

Stainless steel tube surface oxidation treatment

Stainless steel tube pickling passivation is generally treated with pickling passivation paste and pickling passivation solution. Pickling passivation paste is carried out simultaneously with pickling and passivation, which is completed in one step and changes the traditional pickling and passivation. The process is simple in operation, convenient in construction and low in cost. Suitable for large area painting operations. The pickling passivation solution is suitable for soaking operations on small workpieces.

Stainless steel tube pickling passivation application：

Stainless steel tube pickling passivation is suitable for 200 series, 300 series, 400 series stainless steel tubes, widely used in chemical, pharmaceutical, paper, food, aviation, nuclear industry, construction and other stainless steel pipe equipment, pressure vessels, engineering components surface treatment.