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How to identify whether the 304 stainless steel pipe you bought is 304?

Author: Heng Hexin    Date: February 25, 2021    Source:    Focus on:

    Stainless steel pipe has begun to enter the daily life of the public, more and more municipal engineering, schools, hotels, hospitals and home decoration have begun to use stainless steel pipe. Stainless steel is recognized as a healthy material and can be implanted into the human body. All civil products are made of stainless steel, such as tableware, tea set, etc. commonly three hundred and four Stainless steel is used in high hygiene requirements. Stainless steel material is safe, non-toxic, no odor, no harmful substances, will not cause secondary pollution to the water quality, keep the water pure and sanitary.

   we need to use it a lot three hundred and four Most of the time we buy stainless steel pipes directly from the market. However, most of the sales in the market are three hundred and four Stainless steel pipes, they don't make them three hundred and four Stainless steel pipes, but wholesale sales, they can't guarantee three hundred and four The quality of stainless steel pipe, what he can do is to represent a good quality three hundred and four Stainless steel water pipe brand. Do we know how to identify the quality of stainless steel pipe ? To purchase high quality three hundred and four Stainless steel pipe.

   how to identify three hundred and four Material of stainless steel water pipe ? You can use the following methods:

   one Nitric acid point test: it is the most intuitive test method to test the corrosion resistance of base materials by nitric acid point test. Generally speaking, the good stainless steel pipe will only have slight corrosion during the test, while the stainless steel pipe with the lowest corrosion resistance will have obvious corrosion signs.

   two Stainless steel measuring liquid: also known as stainless steel tube detection liquid medicine. Ensure no stain on the surface of stainless steel pipe. After grinding off the surface coating, remove the coating with a drop of measuring solution. Observe the color change of stainless steel in the test area and compare the color or reddening time.

   three Through spark observation: the quality of stainless steel pipe can also be distinguished by spark and hardness during cutting or welding.

(2) three hundred and four Production process of stainless steel water pipe

   one Polishing brightness: the smoother the moon surface, the smaller the oxidation area and the higher the corrosion resistance.

   two Weld nitrogen protection: most of them start from the weld, so nitrogen protection of weld can effectively improve the corrosion resistance of stainless steel pipe

   three Precision: Although the accuracy has nothing to do with the corrosion resistance of stainless steel pipe, the higher the accuracy of stainless steel pipe, the better the process and the higher the quality.


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