Stainless steel water pipes do not rust, but they are not easy to rust compared to iron and copper pipes. It is not a big problem to use a stainless steel water pipe with good material for more than ten years, but it is used well. Stainless steel water pipes are not easy to rust, because the stainless steel pipes are nickel-chromium alloy steel. After the content of nickel-chromium elements reaches a certain condition, a protective film will be formed on the surface of the steel pipes to protect the steel pipes from rusting. However, once the external force or corrosive environment destroys this protective film, the steel pipe is easy to rust. The 6 common rust conditions of stainless steel water pipes and their treatment methods are as follows.
1. Rusted by dissimilar metals
This refers to dissimilar metals such as iron and other metals that are prone to rust. Rust is caused by iron powder and iron cutting. If the situation is not serious, just wipe it with a sponge or cloth with neutral detergent or soapy water, but if the situation is serious and brown rust has been formed, then it is necessary to use commercially available special cleaning agent or 15% diluent of sulfuric acid to clean.
2. Rust caused by harmful components in the attached exhaust
Under the influence of harmful components contained in automobile exhaust, air-conditioning exhaust, or factory exhaust, stainless steel pipes are prone to rust spots. The method of the first case can be used for processing. However, if you are in such an environment, you should do a comprehensive cleaning of the exterior as much as possible 2-3 times a year.
3. Rust caused by adhesion of salt
The 304 stainless steel pipe will also generate red rust in a short period of time when it is hit by the sea wind in the coastal area. Moreover, it rusts faster than other areas, and the treatment method is the same as the first case. In coastal areas, when using stainless steel exterior, it is hoped to use 316 stainless steel pipes with more corrosion resistance as much as possible.
4. Rust caused by adhesion of cleaning liquid
If it cannot be cleaned with a neutral detergent, use a cleaning solution to remove it.
5. Rust caused by fingerprints or hand dirt
If it cannot be cleaned with a neutral detergent, wipe it with a sponge, cloth, etc. moistened with an organic solvent (alcohol, acetone, light benzine, etc.). If this method still cannot be completely removed, use the cleaning liquid for stainless steel to remove it. In short, after various cleaning methods are cleaned, the final cleaning must be done with clean water.
6. Pollution caused by surface protective film
Use a sponge, cloth dampened with water-soluble neutral detergent, or alcohol to wipe. If it is still ineffective, use thinner and light oil to remove it. After cleaning, rinse thoroughly with clean water.