Characteristics and uses of various flanges

> Pipe flange: It is a widely used and removable connector used in various industrial piping systems. Commonly used pipe flanges are welded except for threaded flanges
Flange: > .
Threaded flange: It mainly uses the threads machined in the hole inside the flange and the threaded pipe fittings for rotational connection, without welding. Therefore, this kind of flange is very easy to install and easy to maintain. Generally speaking, threaded flanges are divided into two types. One is to use lens pads on two pipe ends with a certain sealing surface for sealing. This type of flange is mostly used in the synthetic manufacturing industry. In recent years, It is also relatively rarely used. The other is the same as an ordinary flange, using the sealing surfaces of two flanges for sealing. Threaded flanges can not only be used in long rivers that are difficult to weld or cannot be welded, but also cannot be put into use on pipes where the temperature fluctuates repeatedly or is higher than or below degrees Celsius.
Flat welding flange: It mainly inserts the pipe fitting into the inner hole of the flange for certain welding, and has the advantages of being easy to center and cheap. However, because the welding near the flange is relatively easy, the operation method The flange will cause deformation of the flange, so it is generally used in environments with relatively low pressure and temperature.
Butt welding flange: It mainly processes the welding neck end of the flange and the welding end of the pipe fitting into a certain form of welding groove and then directly performs the welding operation. This type of flange is more convenient to construct and has higher strength. It is more suitable for pipelines with relatively large pressure, large temperature fluctuations and high or low temperatures.
Socket flange: It is similar to flat welding flange. The difference is that the pipe fitting is inserted into the socket hole of the flange for welding. It is generally used in relatively small diameter pipes.