The characteristic metal of stainless steel braided sleeve reacts with oxygen in the atmosphere to form an oxide film, and the iron oxide formed on ordinary carbon steel continues to oxidize, so that the rust continues to expand, and finally a hole is formed. In order to protect the surface of carbon steel, paint or oxidation-resistant metal can be used for electroplating, but this is only a protective film. If the protective layer is damaged, the underlying steel will begin to corrode. In order to prevent further oxidation, the stainless steel has a unique appearance, and the natural luster of the stainless steel surface can be seen through this extremely thin oxide layer. If the surface is damaged, the steel surface will repair itself again with the atmosphere, thus forming a "passivation film" and continuing to maintain its effect.
