Flange connects piping and components in a piping system by use of bolted connections and gaskets. Most commonly used flanges are weld neck flange, slip on flange, blind flange, raise face flange and flat face flange. This type of connection in a pipe flange allows for ease of disassembly and separation for repair and regular maintenance. Metal flanges are commonly used for industrial, commercial and institutional application. Flanges are available in variety of styles and pressure classes.