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There are three types of flange sealing surface: plane sealing surface, concave and convex sealing surface, mortise sealing surface. Hebei Shengtian Pipe Fittings Group Co., Ltd. is the main distribution flange, elbow, tee, tee, elbow, pipe, reducing pipe, high pressure pipe seamless steel pipe and other products.

There are three types of flange sealing surface: flat sealing surface, suitable for occasions where the pressure is not high and the medium is non-toxic; Concave and convex sealing surface, suitable for slightly higher pressure occasions; Groove sealing surface, suitable for flammable, explosive, toxic media and high pressure occasions.

The flange gasket is placed between the sealing surface of the two flanges, and after tightening the nut, the specific pressure on the surface of the gasket will be deformed after reaching a certain value, and the uneven part of the sealing surface will be filled to make the connection tight and not leak. In high pressure equipment and pipelines, the use of copper, aluminum, No. 10 steel, stainless steel made of lens type or other shapes of metal gaskets. The contact width between the high pressure gasket and the sealing surface is very narrow (line contact), and the processing finish between the sealing surface and the gasket is high. Ordinary rubber gasket is suitable for occasions where the temperature is below 120℃; Asbestos rubber gasket is suitable for water vapor temperature below 450℃, oil temperature below 350℃, pressure below 5MPa occasions, for general corrosive media, the most commonly used is acid-resistant asbestos board.

The flange plate (disc) is the part that connects the pipe to the pipe. Connected to the end of the pipe, the general flange has holes, can be threaded bolts, so that the two flanges tightly connected. The flange is sealed with a gasket. flanged pipe fittings are pipe fittings with flanged (flange or joint). It can be cast (figure missing), can also be threaded or welded. The flange connection is composed of a pair of flanges, a gasket and a number of bolts and nuts.

A flange gasket is a ring made of material that can produce plastic deformation and has a certain strength. Most gaskets are cut from non-metal plates, or made by professional factories according to the specified size, the material is asbestos rubber sheet, asbestos board, polyethylene board, etc. It is also used to wrap metal gaskets made of non-metallic materials such as asbestos with thin metal plates (sheet iron, stainless steel); There is also a winding gasket made of thin steel tape and asbestos tape wound together.

Cangzhou Mingao Pipe Manufacturing Co., Ltd. is the main distribution flange, elbow, tee, tee, bend, tube, reducing pipe, high pressure pipe seamless steel pipe and other products distribution manufacturers. Our group's products in petroleum, chemical, metallurgy, machinery enjoy a higher status, the company sincerely welcome friends from all walks of life at home and abroad to visit guidance and seek common development.