The Spectacle Blind Flange is not perfect and does not rust, but its anti-oxidation ability is stronger than ordinary steel, so it is called stainless steel. The Spectacle Blind Flange not only has the ability to resist atmospheric oxidation, but also has the ability to corrode in the medium containing acid, alkali and salt. However, the size of its anti-corrosion ability varies with the chemical composition of the steel itself, the interaction state, the operating conditions and the type of environmental media.

　　316 Spectacles Blind Flanges perform well. Therefore, it is not any kind of stainless steel, which is resistant to corrosion and rust in any environment. Stainless steel is based on an extremely thin, solid, dense and stable chromium-rich oxide film formed on its surface, which prevents the penetration and oxidation of oxygen atoms and continues to obtain rust resistance. Once there is such a reason, the membrane will be destroyed from time to time.

　　The Spectacle Blind Flange factory found that the oxygen atoms in the air or liquid will penetrate from time to time, and the iron atoms in the metal will be separated from time to time to form scattered iron oxides, and the metal surface will rust from time to time.

　　The Spectacle Blind Flange factory believes that the organic juice adheres to the stainless steel surface. In the presence of water and oxygen, it constitutes an organic acid that suspends prolonged corrosion of metal surfaces. The surface of stainless steel contains acids, alkalis, salts and other substances, which constitute local corrosion.