Large-diameter flanges are used for butt welding of flanges and pipes. They are mainly used in welding technology. They have good use characteristics and performance. They have reasonable structure, high strength and rigidity, and can withstand high temperature and high pressure, repeated bending and temperature fluctuations. ,

The flange plate mainly plays a role of sealing. No additional parts are required for sealing. There are many holes around the flange plate.

Flange connection is an important and widely used connection method in pipeline engineering. The so-called "flange connection" is to fix two pipes, pipe fittings or equipment on a flange first, then add a flange gasket between the two flanges, and then use bolts to connect the two flanges. The discs are pulled tight to hold them tightly together. However, the quality of flange sealing performance will be affected by many factors.