On August 3rd and 4th, the 7th China Duplex Stainless Steel Conference 2022 was successfully held in Taiyuan Garden International Hotel. With the theme of "Exchange Experience, Expand application", the conference jointly discussed and summarized the latest promotion and application of duplex stainless steel at home and abroad. Duplex stainless steel is mainly involved in chemical, petrochemical, shipbuilding, nuclear power, seawater desalination, water treatment, environmental protection equipment, bridge engineering, heat exchanger, storage tank, construction, pharmaceutical, seamless pipe, standard parts and other fields of application