We all know that SCM415 HOLLOW IRON INDUSTRIAL STEEL PIPES is a good anti-corrosion material, but why does the pipe used in our lives still rust? In fact, the main reason is that the dust of other metals is damp, the surface adheres to the organic juice, the surface has acid and alkali substances, and the air is polluted.
1. The dust of other metals is damp
The surface of SCM415 HOLLOW IRON INDUSTRIAL STEEL PIPES has deposits of dust or heterogeneous metal particles containing other metal elements. In humid air, the condensed water between the deposits and the stainless steel connects the two into a micro-battery. Electrochemical reaction, the protective film is damaged, called electrochemical corrosion.
2. Organic juices adhere to the surface
The surface of SCM415 HOLLOW IRON INDUSTRIAL STEEL PIPES adheres to organic juices, such as vegetables, noodle soup, phlegm, etc. In the presence of water and oxygen, it forms organic acids, and organic acids will corrode the metal surface for a long time.
3. There are acid-base substances on the surface
The surface adhesion of SCM415 HOLLOW IRON INDUSTRIAL STEEL PIPES contains acid, alkali and salt substances, such as the splash of alkali water and lime water in the decoration wall, which causes local corrosion.
4. Air is polluted
In the polluted air, such as the atmosphere containing a large amount of sulfide, carbon oxide and nitrogen oxide, when encountering condensed water, it will form sulfuric acid, nitric acid and acetic acid liquid points, causing chemical corrosion.