BLRF stands for Blind Raised Face flanges. BLRF flanges are used in the piping industry to cap off the end of a pipe or valve or to connect two pipes. They are circular and have a raised face, which helps to create a tight seal between the flange and the gasket. The raised face also provides additional strength to the flange, making it suitable for high-pressure applications. BLRF flanges are typically made from carbon steel, stainless steel, or alloy steel, depending on the application’s specific requirements. They are available in various sizes and pressure ratings and are commonly helpful in industries such as oil and gas, chemical processing, and power generation.