"Keel No. 1-II" is China's first automatic tying system for large-diameter rebar (32mm~40mm) used in nuclear power, integrating five major modules: intelligent bill-of-materials recognition, automatic material selection and feeding, precise laying, efficient tying, and digital information management. It resolves the industry pain points of difficult manual installation and low tying efficiency for large-diameter rebar. At present, the production line has been applied at scale in the workshops surrounding the nuclear island of Zhangzhou Nuclear Power Units 3 and 4, completing the production of more than 200rebar mesh sheetsand undertaking approximately 40% of the wall rebar tying tasks.

R&D on the "Keel No. 1-III" automatic rebar cage tying system has been launched, and will accelerate breakthroughs in collaboration with CNNC 24, CNNC Huaxing, CNNC 22, and CNNC Huachen.

     During the R&D process, CNNC Engineering fully leveraged the advantages of its general contracting platform, working in deep collaboration with design institutes, construction units, and equipment manufacturers:

     The technical summary at the launch event noted that the deployment of "Keel No. 1-II" is not only a process upgrade but also an innovation in the nuclear power construction model: it marks the first time China's nuclear power engineering has achieved full-process automation of large-diameter rebar tying, laying the technical foundation for the standardized and large-scale construction of subsequent Hualong units.

     CNNC Engineering will continue to advance R&D on "Keel No. 1-III," deepen the integrated design-construction collaborative mechanism, drive quality and efficiency improvement in nuclear power engineering through scientific and technological innovation, and help achieve the national "dual carbon" strategic goals.