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What are the shapes of stainless steel flanges?

2022-07-30

Stainless steel flange connection is the basic and commonly used connection method in various vessels and process pipelines. The production process requires or takes into account ease of manufacture, transportation, installation and maintenance. The connection between the vessel and the process piping is usually detachable. Flange connection, with good connection strength and tightness; flange connection stainless steel valve, flange connection is the valve body with flanges at both ends, corresponding to the flange on the pipeline, the flange connected by bolts is installed on the pipeline middle. The gasket is lens-shaped and made of metal. It is used for high pressure valve or high temperature valve with working pressure ≥100kg/cm². O-ring type: This is a relatively new form of flanged connection, developed with the advent of various rubber O-rings.

Why do stainless steel flanges sometimes rust?

2022-07-30

The stainless steel flange is a very thin, firm and fine stable chromium-rich oxide film (protective film) formed on its surface to prevent the continuous infiltration and oxidation of oxygen atoms, and obtain the ability to resist rust. Once the film is damaged continuously for some reason, the oxygen atoms in the air or liquid will continue to infiltrate or the iron atoms in the metal will continue to separate out, forming loose iron oxide, and the metal surface will be continuously corroded.

Common sense of stainless steel flange device

2022-07-30

The tightening force of the stainless steel flange should be equally divided, and the shrinkage of the rubber pad should be controlled at the left 1/3. are stopped in practice in the normal manner and principles, quality and value types in application, and use and install them in accordance with normal operating practices, without quality and performance problems. Stainless steel flange is not a simple mechanical part in the general sense, but a carrier of mechanical products with rich connotation. The device should select gaskets of different sections and sizes according to the shape of the connection, and place them correctly. The tightening force of the stainless steel flange should be evenly distributed, and the shrinkage of the rubber pad should be controlled at the left 1/3. The stainless steel flange is formed by a thin, strong, dense and stable chromium-rich oxide film formed on the surface to prevent the penetration and oxygenation of oxygen atoms, and has the ability to prevent rust.

How about the sealing performance of stainless steel flat welding flange

2022-07-30

Flange gaskets have been replaced by seal rings to seal face-to-face mating. In this way, only a small amount of pressure is required to compress the cover. As the required pressure decreases, the size and required number of bolts can be reduced accordingly, so a new product that is small in size and light in weight (70% to 80% lighter than traditional flanges) is designed . Therefore, the stainless steel flat welding flange type is a relatively excellent flange product, which reduces the quality and space and plays an important role in industrial use. The steel plate for the production of stainless steel flat welding flanges should be ultrasonically inspected, with no delamination defects, good quality and performance problems, and produced and inspected in accordance with quality requirements, and the steel plates produced and used have no quality problems.