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The relationship between steel pipe and flange

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The flange is a disc-shaped part, which is the most common in pipeline engineering. Flanges are used in pairs. In pipeline engineering, flanges are mainly used for the connection of steel pipes. In the pipelines that need to be connected, a flange plate is installed in various ways. The low-pressure pipeline can use the wire flange, and the welding flange is used for the pressure above 4 kg. Add a sealing point between the two flanges, and then tighten them with bolts. Flanges with different pressure have different thicknesses and use different bolts. When water pumps and valves are connected to pipelines, parts of this equipment and equipment are also made into corresponding flange shapes, also known as flange connection. All connecting parts that are connected by bolts on the two planes and are closed at the same time are generally called "flanges", such as the connection of ventilation pipes. This type of part can be called "flange parts". But this kind of connection is only a part of the equipment, such as the connection between the flange and the water pump. It is not good to call the water pump "flange parts". Smaller ones, such as valves, can be called "flange parts".

Flange

Flange connection is an important connection method for pipeline construction. Flange connection is to fix two pipes, pipe fittings, or equipment on a flange plate respectively, add flange pads between the two flange plates, and fasten them together with bolts to complete the connection. Some pipe fittings and equipment have their flange, which is also a flange connection.

 

The flange is divided into threaded connection (wire connection) flange and welding flange. Low-pressure small-diameter wire flanges, high-pressure and low-pressure large-diameters both use welded flanges. The thickness of flanges and the diameter and number of connecting bolts are different for different pressure. According to different levels of pressure, flange gaskets also have different materials, from low-pressure asbestos gaskets, high-pressure asbestos gaskets to metal gaskets. The flange connection is easy to use and can withstand greater pressure. In industrial pipelines, flange connections are widely used. In the home, the pipe diameter is small, and it is low pressure, and the flange connection is invisible. If it is in a boiler room or production site, flanged pipes and equipment are everywhere.

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