2022

Flat welding flange

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Details of Welding Flanges:
Flat welding flanges can also be called forged flanges, plate flat welding flanges, threaded flanges, PE pipe matching flanges, and steam pipeline flanges.
Flat welding flange is used for carbon steel pipe connection, the nominal pressure does not exceed 2.5MPa, the connection form of flat welding flange includes single-sided welding and double-sided nut connection, only single-sided welding does not need to weld pipes during welding The inner port connected with the flange is generally used for low and medium pressure pipelines.
Flat welding flange usually refers to the opening of several fixed holes on the periphery of a disk-like metal body for connecting other things. This thing is widely used in machinery, so it looks strange, as long as it looks like a flange, so the flange is a disc-shaped part, the most common in pipeline engineering, and flanges are used in pairs. In pipeline engineering, flanges are mainly used for the connection of pipelines. Different pressure flanges have different thicknesses and use different bolts. When pumps and valves are connected to pipelines, parts of these equipment are also made into corresponding flange shapes, also known as flange connections.
Flat welding flanges are divided into threaded (wired) flanges and welding flanges. The low-pressure small diameter has a wire flange, and the high-pressure and low-pressure large diameter use welded flanges. The thickness of the flanges and the diameter and number of connecting bolts are different for different pressures. According to different levels of pressure, flange gaskets are also available in different materials, ranging from low-pressure asbestos gaskets, high-pressure asbestos gaskets to metal gaskets. Flange connection is easy to use and can withstand greater pressure.
Ordinary flat welding flange is suitable for medium and low pressure PN2.5 and below; butt welding type commonly known as big tail flange is suitable for high temperature and high pressure pipeline connection PN4.0 above, there are butt welding flat flange, butt welding concave flange, butt welding Welded convex flanges, of which concave and convex flanges increase the tightness of the joint surface for mating flanges; there are also threaded connection flanges. The connection method between the flange and the pipeline is threaded, which is generally used for low-pressure non-corrosive fluids.
In industrial pipelines, flat welding flange connections are widely used. In the home, the pipe diameter is small, and it is low pressure, and the flange connection is not visible. If you are in a boiler room or production site, there are flanged pipes and equipment everywhere.
The advantages of flat welding flange, connecting pipelines and maintaining good sealing performance of pipelines.
If there is a problem with a certain section of the pipeline of the flat welding flange, it is convenient to replace a certain section of the pipeline.
If the pipeline fails, it is easy to disassemble and test.