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法兰连接是将两个管道，管件或设备分别固定在一个法兰板上，然后在两个法兰板之间添加法兰垫，并用螺栓将其固定以完成连接。一些管道配件和设备已经具有法兰，这也是法兰连接。法兰连接是管道建设的重要连接方法。法兰连接易于使用，可以承受较大的压力。法兰连接广泛用于工业管道。在家中，管道直径小且压力低，因此看不到法兰连接。如果在锅炉房或生产现场，法兰管和设备无处不在。

1.根据连接方式的不同，法兰的连接方式可分为：平平焊接法兰，平颈带颈焊接法兰，对接带颈法兰，承插焊法兰，螺纹法兰，法兰盖，皮带焊接环颈松动法兰，平焊环松法兰，环槽表面法兰和法兰盖，大直径平法兰，大直径高颈法兰，盲孔，对焊环松法兰。Flange connection is to fix two pipes, pipe fittings or equipment on one flange plate respectively, then add flange pads between the two flange plates and fix them with bolts to complete the connection. Some pipe fittings and equipment already have flanges, which are also flange connections. Flange connection is an important connection method for pipeline construction. Flange connections are easy to use and can withstand large pressures. Flange connections are widely used in industrial pipelines. At home, the pipe diameter is small and the pressure is low, so the flange connection is not visible. If in a boiler room or production site, flange pipes and equipment are everywhere.

1. According to the connection method, the flange connection method can be divided into: flat flat welding flange, flat neck welding flange with neck, butt flange with neck, socket welding flange, threaded flange, flange cover, belt Welded ring neck loose flange, flat welded ring loose flange, ring groove surface flange and flange cover, large diameter flat flange, large diameter high neck flange, blind hole, butt welded ring loose flange.