On December 19th, the world's first CAP1400 main pipeline technical appraisal meeting developed by China Duplex was held in Deyang. The appraisal expert group consists of experts from the National Nuclear Engineering Co., Ltd., Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., China Nuclear Power Research & Design Institute, Shenzhen China Guangguang Nuclear Power Engineering Design Co., Ltd., and China National Nuclear Power Demonstration Power Plant Co., Ltd. The expert group and the participants witnessed the completion of the manufactured CAP1400 main pipeline product at the nuclear capacitor plant, heard two detailed reports on the development work, and carefully reviewed the relevant documents. After questioning, answering questions and discussions, the expert group focused on the CAP1400. The technical research and development achievements of the key manufacturing processes such as smelting, forging, bending and heat treatment of the main pipeline have been fully affirmed, and it is agreed that the double-developed CAP1400 main pipeline satisfies the technical requirements, and its manufacturing process is reasonable and reliable, and has passed technical appraisal. The development of CAP1400 nuclear power technology is a third-generation large-scale advanced pressurized water reactor demonstration project independently researched and developed by China, based on the introduction, digestion, and absorption of third-generation nuclear power technologies, to promote and realize the autonomy of the third-generation nuclear power technology in China. And the implementation of the "going out" strategy for nuclear power is of great significance. The CAP1400 main pipeline is the world's largest ultra-low carbon austenitic stainless steel nuclear island main pipeline. It has strong forging crack susceptibility, difficult to control the grain size and uniformity of the microstructure in various parts, and has complex shape and dimensional accuracy. Difficulties, solid solution heat treatment and easy deformation and other major technical difficulties, all manufacturing processes are facing severe challenges. The successful development of the CAP1400 main pipeline laid a solid foundation for the construction of the world’s largest nuclear power plant and made important contributions to the world’s nuclear power construction. French Shield,Anti Riot Shield,Police Protective Equipment,Pc Riot Control Shield skyshields(suzhou)thermoforming tech.co.ltd , https://www.skyshields.com