Flanges are mechanical components used to connect pipes, valves, and other equipment in various systems. They provide a stable connection point, allowing for easy assembly and disassembly. Flanges come in different shapes and sizes, often made from materials like steel, plastic, or cast iron, depending on the application and pressure requirements. Typically, flanges are designed with holes around their edges for bolts, ensuring a secure fit. They are commonly used in industries such as oil and gas, water supply, and chemical processing, where reliable connections are essential for safety and efficiency.