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304 Stainless Steel Tube Identification Method
Jan 14, 2019

1. There are stainless steel tube identification liquids on the market. It is known by measuring the content of nickel in stainless steel tubes.

2. Magnetically distinguish 304 stainless steel tube. Generally, the larger magnetic tube is the 2 series stainless steel tube. The non-magnetic or weak magnetic is the 3 series stainless steel tube (but neither method can clearly determine whether it is 304 stainless steel).

3. The method of measuring the hardness is used to determine the steel, and the 3 series are austenitic stainless steel tubes. The hardness is also different from that of martensitic stainless steel and duplex stainless steel.

4. The color and smoothness of the steel surface distinguish the true and false of the steel.

5. The price is particularly low, and there is a high probability that it is false.

6. Spectral analysis or chemical analysis to distinguish between true and false.

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