How to identify genuine and fake 304 stainless steel pipes?

Usually, if the products we buy are made of 304 stainless steel, they will usually have steel stamps such as 304 or SUS 304. If there is no mark, it will basically not be authentic, and some marked products may not be completely genuine 304 products. Especially some direct contact products can cause very serious harm to our bodies if used for a long time. 304 stainless steel pipes are used more and more widely in daily production and life. In order to ensure the rights and interests of our consumers, we can make simple identification by ourselves.
If you have any questions about the stainless steel grade marked on the product, we can also purchase a special 304 stainless steel testing solution for inspection. Drop the solution onto the surface of the 304 stainless steel pipe we want to test. After a few minutes, observe the color change on the surface and compare the color change with the color of the test paper. Generally, there will be a color test paper comparison on the packaging of the potion. We can roughly identify the steel grade used through the color change. Usually products made of 304 material that do not change color are not made of 304 material if they change color, and the darker the color, the worse the material.