What is the difference between a flanged surface and an RF
RF FF gaskets can be used. Flanges are called flanges or flanges. The flange is the part that connects the pipe with the pipe and the valve. There are holes in the flanges, and bolts make two flanges. The flange is sealed with gasket. Flange threaded connection (wire) flange and welding flange and card flange
RF is a convex flange that can be used for PN1.6 ~ PN10MPA. While the FF is flat, the seal is not as good as the RF, and the pressure is 1.6 ~ 2.0 MPA (standard GB9113), and other forms such as RTJ and FM are more stressed.
The FF is a full-planed flanged, and the RF is a flanged flanged on a covered step. The FF surface is usually used for low pressure flanges, or the sealing surface of the sealing stainless steel liner, which can corrode the surface.
