This document is Part 13 of T/CNEA102 "Welding of Pressure-Containing Components of Pressurized Water Reactors". This document has a total of 8 chapters, of which Chapters 1-3 are normative provisions, and Chapters 4-8 are the main contents of Part 13 of Welding of Pressure-Containing Components of Pressurized Water Reactors: Carbon Steel Welding Wire. The main contents include: model, technical requirements, test methods, inspection rules and packaging, marking and quality certification documents.