Flanges (also known as flange plates) serve as the pivotal connecting components between pipes and valves, as well as between sections of piping. Characterized by their standardized structure and robust sealing capabilities, they are widely utilized across the full spectrum of pipeline systems—encompassing civil, industrial, petrochemical, and municipal applications. Acting as a connecting "bridge," flanges are secured via bolted connections to ensure pipeline sealing and pressure containment. Adaptable to diverse operating conditions involving varying pressures, temperatures, and media, they offer flexible compatibility with a wide array of valves—including flanged butterfly valves, ball valves, and check valves. Furthermore, they boast the advantages of easy installation, flexible disassembly, and high interchangeability, making them fundamental components for ensuring the safety and efficient transmission of pipeline systems. Their materials, sealing surfaces, and specifications strictly adhere to both national and international standards, allowing for precise selection based on specific operating requirements to achieve an optimal balance between reliability and cost-effectiveness.