how to determine whether the stainless steel manhole material meets the standard

Customers have encountered rust problems when using stainless steel manholes. At this time, the first reaction of customers is to worry about whether there is a problem with the material. Stainless steel such as 304 or 316L should not rust, but some Sometimes they will rust because of the method and conditions used. How to determine whether the stainless steel manhole material meets the standard 1. Use stainless steel potion for testing. 2. Use a spectrometer to analyze chemical components. 3. Salt spray test to simulate the actual use environment. The liquid test is mostly used and convenient, and the cost of the spectrometer is relatively high. If you suspect that there is a problem with the stainless steel manhole material, you can directly use the liquid test. The result will be available in less than a minute. It is economical, convenient, and the key is to make you feel at ease. use.