Three methods for distinguishing the quality of sanitary manhole materials
Apr 13, 2020| The first is salt spray test, which simulates the actual use environment of sanitary manhole.
The second is chemical composition analysis, that is, the use of equipment such as spectrometers for professional analysis;
The third is the use of stainless steel potion test.In comparison, the third method is more simple, the implementation cost is also the lowest, if we suspect that the stainless steel health grade manhole material has a problem, you can use potions to test, usually within a few seconds to see the results.
We know that the full name of stainless steel is "stainless acid steel", it can withstand steam, water, air and other weak corrosion medium corrosion.Its history can be traced back to the early 20th century, when the British invented stainless steel to improve the wear resistance of rifles in the army during world war I.
In the manhole industry, the main material of stainless steel sanitary manhole is 304 or 306L stainless steel, this material is not supposed to rust, but sometimes due to the use of different conditions, different methods of use, rust may also occur.Of course, the higher the standard of stainless steel rust the less likely.This asks us to learn to distinguish the good and bad of stainless steel material.