What do the Chinese flange F R represent?
The form of the sealing surface is a convex surface or a concave convex surface, or a tongue and groove surface is represented by different mother
Put it this way, I hope it will help you.Full plane (FF)Tongue and groove face (TG)Concave convex surface (MFM)Protrusion (RF)Ring connection surface (RJ)
1, F means that the flange sealing surface is flat, R table flange sealing surface is protruding surface2, flange (Flange), also known as flange, flange plate or edge. A flange is a part that is connected between the pipe and the pipe, used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange. Flange connection or flange joint means that the flange, the shim and the bolt are mutually connected as a group of three detachable sealing structures. Pipe flanges are flanges used for piping in pipe installations. They are used on equipment and refer to the entrance and exit flanges of the equipment. The flange is lined with bolts to secure the two flanges. Gaskets for gaskets between flanges. Sub threaded flange connection (threaded connection), flange welding flange and flange clamp. Flanges are used in pairs. Low pressure pipes can be made of wire flanges and welded flanges with pressures of more than four kilograms. Add a gasket between the two flanges and secure with bolts. Different pressure flange thickness is different, they use the bolt is also different. Water pump and valve, and in the pipe connection, these equipment parts of the equipment also made corresponding flange shape, also known as flange connection.
The data code that you see is shown on the old standard. F table flange sealing surface is flat R table flange sealing surface is protruding surface. Specific structure, you can Baidu, GB/T9113 can be very clear and clear.New standard flange sealing surface structure codeFull plane (FF)Tongue and groove face (TG)Concave convex surface (MFM)Protrusion (RF)Ring connection surface (RJ)
