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Flange Faces

Flange Facing for B16.5 and B16.47 Flanges

The flange face is the surface area where the gasket seats to seal the flanged connection. During fabrication the flange is always fitted perpendicular to the pipe to prevent any leakage of the connecting joint. The most common types of flange faces are the Raised Face or RF, the Flat Faced or FF, and the…

Raised Face Flange vs. Flat Faced Flange

The key identifier between the raised face and flat face flange is that the raised face is raised above the bolting circle face.  The raised face and flat face flanges are both industry standard in the pipe fitting and flange industry.  This post will showcase details on the differences and uses of the raised face…

What are the Five basic Flange Face Finishes?

What are the 5 Basic Flange Face Finishes? The Five basic Finishes for ANSI B16.5 and ASME B16.47 Flanges are the Stock Finish, Spiral Serrated Finish, Concentric Serrated Finish, Smooth Finish and Cold Water Finish. 1. The Stock Flange Finish The Stock Flange Finish is a continuous groove produced by using a 1/16” radius round…

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