Quality identification of malleable steel pipe fittings

1. Appearance inspection

First, check the malleable steel pipe fittings from the appearance. The surface of high-quality malleable steel pipe fittings should be

smooth and flat, without cracks, burrs, oxide and other defects. In addition, the logo on the pipe should be clearly visible, including

brand, specification, model and other information. The integrity of this information reflects the manufacturer's responsible attitude

and also provides protection for future after-sales.

Second, material identification

Secondly, to identify the material of malleable steel pipe fittings. High-quality malleable steel pipe fittings should be made of ductile

iron or other high-strength materials, with good tensile strength and elongation. The identification method can use the magnetic

powder detection method, that is, the magnetic powder is sprinkled on the surface of the pipe and the adsorption of the magnetic

powder is observed. If the adsorption is not uniform, it indicates that the material of the pipe fitting may be defective.

Three, size measurement

Next, the size of the malleable steel pipe fittings is measured. The size of pipe fittings should meet national standards, too large or

too small size will affect the installation and use of pipe fittings. Commonly used measuring tools include vernier calipers,

micrometers and so on. In addition, it is also necessary to check the details of the socket depth and thread accuracy of the pipe

fitting to ensure that the dimensional accuracy meets the requirements.

4. Performance test

In addition to appearance and dimensional checks, performance tests are also required. Commonly used performance test methods

include hydraulic test, tensile test, impact test and so on. Through these tests, we can intuitively understand the performance of

malleable steel pipe fittings under the action of external forces such as pressure, tension and impact force, so as to judge their

quality.

5. Brand and reputation

Finally, choose well-known brands and have a good reputation of malleable steel pipe fittings. Well-known brand manufacturers

usually have strict quality management system and production process, product quality is more guaranteed. In addition, you can

understand the reputation of the product through network inquiries, consulting industry insiders and other ways, choose products

with high praise, and reduce the purchase risk.

Tangshan Xinye Technology Co., Ltd. is a professional manufacturer of malleable steel pipe fittings, in the casting industry for 25 years

, has a wealth of experience, if you have questions in the purchase of malleable steel pipe fittings, welcome to inquire.