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You must be curious about this knowledge about flange!
发布时间：
2022-01-21
Flanges are a very common pipeline component in large-scale pipeline construction. Because of different use environments and construction requirements, flanges are divided into many types. Let us understand the classification of these flanges together!
Flanges are a very common pipeline component in large-scale pipeline construction. Because of different use environments and construction requirements, flanges are divided into many types. Let us understand the classification of these flanges together!
1. Flat welding flange
Advantages: The material of the flat welding flange is very common, and the manufacturing process is simple, which ensures that the cost of the flat welding flange is low and can be used in a wide range.
Disadvantages: The rigidity of flat welding flanges is generally small, and flat welding flanges are hardly used in the transportation of some high-pressure, flammable and explosive chemicals. the
2. Welding flange with flat neck
Advantages: The flat welding neck flange has a wide range of applications and is relatively simple to weld.
Disadvantages: Although the rigidity of the flat-welded flange with neck is higher than that of the ordinary flat-welded flange, it cannot withstand high temperature during welding, and it cannot transport high-pressure substances during use, and it is prone to rupture.
3. Welding neck flange
Advantages: The neck butt welding flange has a good sealing effect and can transport some special gases.
Disadvantages: It is difficult to weld the neck butt welding flange, and the flange is heavy, and it is difficult to locate during installation, and this kind of flange is also prone to collision during transportation.
4. Integral flange
The integral flange is one of the flanges for connection management. The materials used for the integral flange include carbon steel, stainless steel, alloy steel, etc. The integral flange can be applied to some high-pressure pipelines.
5. Socket welding flange
Socket welding flange is a bolt flange welded on one end and the other end of the steel pipe. The scope of application of this flange: boiler pressure vessel, petroleum, pharmaceutical, shipbuilding, metallurgy, machinery, chemical industry.
6. Screw flange
Screw flanges are supported by screws during installation to form pipe flanges without welded flanges.
Advantages: Compared with welding flanges and butt welding flanges, screw flanges are easy to install and maintain, and can be used for piping that does not allow on-site welding. Alloy steel flanges are strong enough, but difficult to weld or have poor welding performance. In the face of some more complicated situations, screw flanges can also be selected to connect pipes.
Disadvantages: In the condition of piping temperature and sharp changes (below 260 degrees Celsius -45 degrees Celsius), in order to avoid leakage, it is not recommended to use it.
The above is some knowledge related to flanges. Flanges play a very important role in pipeline connections. In addition to classifying flanges according to different production standards, flanges can also be classified according to materials. The common one is the stainless steel method. Flanges, carbon steel flanges, galvanized flanges, these flanges are also very common flanges, especially stainless steel flanges because of their excellent performance, so they can often be seen in various pipeline constructions Fran's figure.
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