What are IBR Cast Iron Flanges? IBR Cast Iron Flanges are cast iron flanged pipe components intended for piping applications where IBR compliance or certification requirements apply, subject to the specific application and regulatory approval. Where are IBR Cast Iron Flanges used? They are used in boiler-related piping, steam systems, water lines, industrial utilities, pump connections, valve connections, and other suitable piping applications. What are the benefits of cast iron flanges? Cast iron flanges provide a rigid bolted connection, good dimensional stability, convenient maintenance access, and dependable performance in suitable service conditions.