What is a flange in machining and why is it so named

The flange is a disc-shaped part, which is most common in pipeline engineering. The flanges are used in pairs. In pipeline engineering, flanges are mainly used for pipe connection. For pipelines to be connected, a flange is installed for various types. Low-pressure pipelines can use wire flanges, and welding flanges for pressures of 4 kg or more. Add a sealing point between the two flanges and tighten with bolts. Different pressure flanges have different thicknesses and use different bolts. When pumps and valves are connected to pipelines, the parts of these equipment and equipment are also made into corresponding flange shapes, also known as flange connections. All connection parts that are closed at the same time by bolts in two planes are generally called flanges, such as the connection of ventilation ducts. This type of parts can be called flange parts. However, this connection is only a part of the equipment, such as the connection between the flange and the water pump, it is difficult to call the water pump a flange-type part. Relatively small ones such as valves can be called flange parts. Flange connection is an important connection method for pipeline construction. Flange connection is to fix two pipes, pipe fittings or equipment to a flange plate, and then add flange pads between the two flange plates, and fasten them with bolts to complete the connection. Some pipe fittings and equipment already have flanges, which are also flange connections. Flange is divided into threaded (wire) flange and welding flange. Low-pressure small diameter wire-connected flanges, high-pressure and low-pressure large diameters are welded flanges. The thickness of the flange and the diameter and number of connecting bolts are different for different pressures. According to different levels of pressure, flange pads also have different materials, from low-pressure asbestos pads, high-pressure asbestos pads to metal pads. The flange connection is easy to use and can withstand large pressures. In industrial pipelines, flange connections are widely used. In the home, the pipe diameter is small and the pressure is low, so the flange connection is not visible. If in a boiler room or production site, flanged pipes and equipment are everywhere.