What Is Flange Structure Of Hardware Parts

1. Flange connection
flange connections are important connections for pipeline construction.
Flange connection is the two pipes, pipe fittings or equipment, respectively fixed on a flange plate, between the two flanges, plus flange pad, bolted together to complete the connection. Some pipe fittings and equipment have their own flange, also belong to the flange connection.
Flange is divided into threaded connection (wire connection) flange and welded flange. Low pressure small diameter wire flange, high pressure and low pressure large diameter are welded flange, different pressure flange thickness and connecting bolt diameter and number are different.
Flange pads come in different materials according to different levels of pressure, from low pressure asbestos pads, high pressure asbestos pads to metal pads.
Flange connection is easy to use and can withstand greater pressure.
Flange connection is widely used in industrial pipeline. In the home, the pipe diameter is small, and is low pressure, not visible flange connection. If you're in a boiler room or a production site, there are flanged pipes and equipment everywhere.
Also called flanges or flanges. A part that connects pipes to pipes. Connected to tube end. There are holes on the flange, and bolts can be worn to make the two flanges tightly connected. The flanges are gasketed. flanged pipe fittings refer to pipe fittings with flange (protruding flange or joint). It can be made of casting (figure missing), also can be made of threaded or welded. flange joints (flange, joint) are formed of a pair of flanges, a gasket, and several bolts and nuts. The gasket is placed between the sealing surface of the two flanges. 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, so that the connection is tight and not leaking. A flange connection is a detachable connection. According to the connected parts can be divided into container flange and pipe flange. According to the structure type, there are integral flange, loose flange and threaded flange. Common integral flange are flat welding flange and butt welding flange. Flat welding flange rigidity is poor, suitable for pressure p≤4MPa occasions; Butt welding flange is also called high neck flange, rigidity is larger, suitable for high pressure and temperature occasions. There are three types of flange sealing surface: plane sealing surface, suitable for the occasion of low pressure and non-toxic medium; Concave and convex sealing surface, suitable for slightly higher pressure occasions; Tenon sealing surface, suitable for flammable, explosive, toxic media and high pressure occasions. A gasket is a ring made of a material capable of plastic deformation and of certain strength. Most gaskets are cut from non-metallic plates, or made by professional factories in accordance with the specified size, the material is asbestos rubber board, asbestos board, polyethylene board, etc.; Also useful thin metal plate (sheet iron, stainless steel) asbestos and other non-metallic materials wrapped up made of metal gasket; There is also a winding gasket made of thin steel tape wound with asbestos tape. Ordinary rubber gasket suitable for temperature below 120℃ occasions; 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. In high pressure equipment and pipelines, the use of copper, aluminum, 10 steel, stainless steel made of lens type or other shapes of metal gaskets. The contact width between high pressure gasket and sealing surface is very narrow (line contact), and the processing finish between sealing surface and gasket is high.