Flat-face (FF) flanges feature a gasket surface that aligns with the bolting circle face, making them ideal for applications where the mating flange or fitting is made from cast iron. It’s crucial to avoid bolting flat face flanges to raised face flanges, as this can lead to improper sealing and potential damage.

According to ASME B31.1, when connecting flat-face cast iron flanges to carbon steel flanges, you must remove the raised face from the carbon steel flange. This step is vital to prevent the thin and brittle cast iron flange from being deformed by the gap created by the raised face. Instead, a full-face gasket should be used to ensure a proper seal.

Pentagon Steel India is a leading supplier, manufacturer, and exporter of flat-face flanges in India. With a commitment to quality and adherence to industry standards, we provide reliable solutions for various industrial applications. Our flanges are designed to meet the specific needs of our customers, ensuring safe and efficient operations in their systems. Trust Pentagon Steel India for all your flat face flange requirements, where quality and service come together.