A Comprehensive Analysis of Carbon Steel Elbow Requirements: From Basic Selection to Nuclear Power ApplicationsIn a modern pressurized water reactor nuclear power plant, 14Mn elbow pipes quietly undertake the task of transporting high-temperature and high-pressure steam. These seemingly simple elbow pipes are supported by strict technical standards such as NB/T 20005.16-2024. Carbon steel elbows, as key connecting components in industrial pipeline systems, directly affect the safe operation of the entire system. With the continuous deepening of industrialization in China, the technical requirements for carbon steel elbows are becoming increasingly strict, and the standard system is also becoming more and more complete. From ordinary petrochemical pipelines to the main steam systems of nuclear power plants, different application scenarios have put forward different standard requirements for carbon steel elbows. ---01 Standard System: Overview of Main Standards for Carbon Steel Elbows at Home and Abroad