A flange is a crucial component commonly used for pipeline connections, linking pipes, valves, pumps, and other equipment. Typically consisting of disk-shaped parts, it features threaded holes or openings for fastening and connection purposes. Flanges come in various types, including welded, threaded, and blind flanges. Their primary function is to facilitate the connection and sealing of pipeline systems while enabling convenient and secure maintenance and replacement. Flanges find extensive applications across industries such as petrochemicals, power generation, pharmaceuticals, and shipbuilding, serving as indispensable components within pipeline systems.