Pipe flange:

It is a widely used connection piece that can be disassembled and used in various industrial piping systems. The commonly used pipe flanges are welded flanges except for threaded flanges.

Threaded flange:

Mainly use the threads processed in the inner hole of the flange and the pipe fittings with threads for rotating connection, without welding. Therefore, this kind of flange is very convenient to install, and it is also convenient for maintenance. Under normal circumstances, there are two types of threaded flanges. One is to use two tube end positions with a certain sealing surface to be sealed with lens gaskets. Most of these flanges are used in the synthetic ammonia manufacturing industry. In recent years Also used less. The other is the same as the ordinary flange, using the sealing surface of the flange for sealing. Threaded flanges can be used in situations where welding is difficult or impossible, but they cannot be used on pipes with repeated temperature fluctuations or higher than 260 degrees Celsius and less than -45 degrees Celsius.

Flat welding flange:

It is mainly to insert the pipe into the inner hole of the flange for certain welding, and it has the advantages of easy alignment and low price. However, because the welding near the flange is relatively easy, the operation of the flange will cause the deformation of the flange, so Under normal circumstances, it is used in an environment with relatively low pressure and temperature.

Butt welding flange:

It is mainly to process the welding neck end of the flange and the welding end of the pipe fittings into a certain form of welding groove, and then directly perform the welding operation. This kind of flange is more convenient to construct, has higher strength, and is more suitable for higher pressure. In pipelines with relatively large temperature fluctuations and high or low temperature.

Socket flange:

Flat welding flanges are similar. The difference is that the pipe fittings are inserted into the flange sockets for welding. Generally, they are used in relatively small diameter pipes.