Stainless steel flange and carbon steel flange material how to identify

Stainless steel flange and carbon steel flange material how to identify? How to distinguish the roughly material of two kinds of flanges is relatively simple. The following DHDZ flange manufacturer takes you to simply understand the simple way to distinguish the material of two kinds of products.
1. The first thing to have finished flange, flange surface without galvanized, general product brush anti-corrosion paint, gas or oil to wipe clean surface, and then use a small amount of water droplets to the flange top, if carbon steel flanges is generally a few hours or even not to exceed a hours will have obvious tan rust (remember not to drip off water exposure, Or not necessarily can see), if it is stainless steel flange, generally will only leave a watermark, there will be no rust.
2. Naked eye, stainless steel flange and carbon steel flange color is actually more obvious. The surface of stainless steel flange is smooth and the surface of carbon steel flange is generally a little rough. It will be more obvious if two flanges of different materials are compared.
The above two methods can only roughly distinguish stainless steel flanges or carbon steel flanges. This can not confirm what the specific material is, to more accurately determine the material of stainless steel and carbon steel flange then you can refer to the two methods:
3. stainless steel liquid test, generally only applicable to stainless steel flange, according to the change of the color and color effect of the time to confirm it is a kind of material.

4. There is also a method often used by flange manufacturers, that is direct reading scanner. It can accurately detect what the flange is made of, but its price is relatively expensive, which is a major defect of this method.