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2022
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09
Brief introduction to the use and production of large flanges
Author：
Commonly used is acid-resistant asbestos board. Gasket is a ring made of material that can produce plastic deformation and has a certain strength. Large flange connection is a detachable connection. According to the connected components, it can be divided into container method flanges and pipe flanges.
According to the structure type, there are integral flanges, looper flanges and threaded flanges.
In high-pressure equipment and pipelines, lens-type or other-shaped metal gaskets made of copper, aluminum, 10-gauge steel, and stainless steel are used.
The contact width between the high-pressure gasket and the sealing surface is very narrow (line contact), and the processing finish of the sealing surface and the gasket is high.
Common integral flanges include flat welding flanges and butt welding flanges.
Large flanges have poor rigidity and are suitable for occasions where the pressure is p≤4MPa; large flanges, also known as high neck flanges, have high rigidity and are suitable for occasions with high pressure and temperature.
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