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Question:

The difference between the flange and the flange root

The difference between the flange and the flange rootAlsoDN20 (25) represents what mean

Answer:

It is a problem of internal and external diameter. DN20 is the nominal diameter, and the 25 is corresponding to the outer diameter of the tube.In practice, we should pay attention to some of which is an inner diameter, and corresponds to the two pipes. The pipes corresponding to DN20 are of 25 and 27 specifications. While DN32 corresponds to 38 and 42, DN50 corresponds to 57 and 60, DN100 corresponds to 108 and 114, DN125 corresponds to 133 and 140, and DN150 corresponds to 159 and 165.Therefore, in the flange production, sales, procurement, we must pay attention to carelessness, but to let themselves suffer.
It is a problem of internal and external diameter. DN20 is the nominal diameter, and the 25 is corresponding to the outer diameter of the tube.In practice, we should pay attention to some of which is an inner diameter, and corresponds to the two pipes. The pipes corresponding to DN20 are of 25 and 27 specifications. While DN32 corresponds to 38 and 42, DN50 corresponds to 57 and 60, DN100 corresponds to 108 and 114, DN125 corresponds to 133 and 140, and DN150 corresponds to 159 and 165.Therefore, in the flange production, sales, procurement, we must pay attention to carelessness, but to let themselves suffer.
Flange (Flange), also called flange or flange plate. The flange is the part that connects the pipe to the pipe and is connected to the end of the pipe. Flange connection or flange connection, is defined by the flange, gasket and bolt connection between the three sealing structure of the detachable connection as a combination of group pipe flange refers to the pipeline installation of piping flange, used in equipment refers to equipment import and export flange. The flange is lined with bolts to secure the two flanges. Gaskets for gaskets between flanges. Flange, threaded connection (wire), flange and welding flange.Flanagan, plastic flange root, for connecting plastic pipe or composite pipe, a connecting surrounding edge and a connecting joint, connecting surrounding edge without connecting bolt holes on the connecting combining surface is provided with a sealing ring and an annular groove. The utility model of sealing ring and the annular groove is equipped with the plastic flange root sealing connection easier, good sealing performance, there is no need for the implementation of large flange locking force, easy construction, protection of the flange, greatly prolong the service life of the flange, can replace steel flange connection. Negative pressure of the utility model is especially suitable for the mine gas drainage pipe.25 refers to the diameter (diameter) is 25.

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