The CDG gate valve is divided into plate gate valve and ordinary gate valve, which is widely used in oil, natural gas extraction, transmission, collecting pipeline, storage system, station, airport, refining, chemical industry and so on.The CDG gate valves in strict accordance with the standard with the latest technology design and manufacturing, in the process of design and manufacture of fully considering the harsh working conditions and special features of the pipeline valve, is safety and the reliability of the long-term use of high quality valves.