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Standards and requirements for carbon steel flanges!

2022-05-24

Carbon steel flanges are produced in accordance with the size and tolerance range required by national standards. They are different from flanges that are not produced according to standard sizes, also called second-standard flanges (some people call non-standard flanges incorrect). Usually, some unscrupulous merchants will reduce the thickness and outer diameter of the flange to achieve the purpose of saving materials, and also use scrap steel or scrap steel to process the flange.

Usually this kind of steel is waste material whose chemical composition and mechanical properties do not meet the standards. What’s more, the flanges are produced by private steelmaking in black steel plants. The steelmaking technology used in this private steelmaking is outdated and cannot guarantee the mechanical properties and welding properties. From time to time, it may not be possible to weld with the steel pipe, or the steel itself will leak water after welding with cracks and pores. Therefore, try to use carbon steel flanges when purchasing flanges.

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The connection method of the national standard flange!

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2022-05-24