The reasons why stainless steel fittings are not easy to rust are as follows:
1. Because steel is not corroded by oxygen and water after processing, it is not easy to rust.
2. Metal chromium is added to carbon steel, and the content is not low, around 12%. After it comes into contact with air, chromium reacts with oxygen to form a dense passivation film on the surface of carbon steel, which can continuously protect stainless steel fittings.
3. The surface of stainless steel fittings has a passivation film, which is very thin, but it can see the natural luster of the steel surface and has very special surface characteristics, so it will not rust.
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