Chemical composition analysis: Determine the content of key alloying elements such as chromium and nickel in 304 stainless steel through spectral analysis or chemical analysis to ensure that it meets the standard requirements.
Stainless steel detection liquid: Stainless steel detection liquid available on the market can identify different types of stainless steel by detecting the content of specific elements (such as nickel) in stainless steel.
Spark identification method: By observing the sparks generated when grinding on a grinder, the chemical composition and approximate content of the material can be determined.
Magnetic test:
304 stainless steel pipes are non-magnetic or weakly magnetic, and their magnetism can be tested with magnets to assist in judgment.
Hardness test: The hardness of 304 stainless steel pipes can be measured by a hardness tester, and the hardness of stainless steel pipes of different materials is different.
Surface observation: Check whether there is rust or other defects on the surface. Although the material cannot be determined, its processing and handling quality can be preliminarily judged.
Salt spray test: Evaluate the corrosion resistance of 304 stainless steel pipes by simulating corrosion tests in marine or humid environments.
Professional testing agency: For situations where accurate and authoritative results are required, they can be sent to professional testing agencies for comprehensive testing.
Heat treatment and processing performance: Check the heat treatment and processing performance of the material, such as weldability, formability, etc., which are also important indicators for evaluating the quality of stainless steel pipes.
Price comparison: Stainless steel pipes with abnormally low prices may have poor quality, but high prices do not necessarily mean good quality. It is necessary to combine other testing methods for a comprehensive judgment.
When purchasing 304 stainless steel pipes, in addition to the above tests, you should also check the product's factory inspection certificate or quality certificate, choose a reputable supplier, and avoid buying counterfeit and shoddy products for cheapness.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
