The World's Leading Rebar Tying Robot
3–4× faster than manual tying, fully unattended. Floors, bridges, tunnels, precast, wherever there's rebar to tie.
Rebar Tying Robot RBTS1
The Rebar Tying Robot RBTS1 is specifically designed for various flat rebar-tying applications across multiple construction sectors. This robot excels in residential construction projects, infrastructure development (including roads, bridges, and tunnels), commercial complexes, medical facilities, dam construction, and industrial plants.
Equipped with an autonomous recognition and positioning system, automatic obstacle avoidance, and intelligent track-changing technology, it efficiently completes large-scale rebar-tying tasks in the central areas of reinforcement grids.
Awards & Recognition
- ★49th International Exhibition of Inventions of Geneva — Gold Medal with Congratulations of the Jury (highest award)
- ★CIC Construction Innovation Award
- ★Hong Kong Awards for Industries: Equipment & Machinery Design Award
- ★Innovating Hong Kong
49th Geneva Inventions Special Prize of the Jury
Our Product Range
Handheld Rebar Tying Machine HT-TS
The Handheld Rebar Tying Machine HT-TS is a high-efficiency, portable electric tool designed for rebar tying in construction and rebar processing. Simply aim at a rebar intersection and pull the trigger — the tool automatically feeds wire, wraps, twists, and cuts in a single motion, completing one standard node in just 0.6 seconds.
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Smart Rebar Processing Line
The Smart Rebar Processing Line consists of a loading rack, conveyor track, unloading rack, rebar cutter, and control console. It automatically aligns, conveys, measures, and cuts rebar with a cutting accuracy of up to 1mm.
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Intelligent Robotic Arm Solutions
The Castor team provides comprehensive, end-to-end robotic and robotic arm solutions for the construction industry. We offer customised services including robotic arm capability extension and construction workflow optimisation, tailored to the process characteristics and on-site requirements of each project — enabling intelligent industry upgrades.
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Castor Construction Robotics Limited
Founded in October 2024 and incubated by the Hong Kong Center for Construction Robotics under the leadership of Professor Li Zexiang, Castor Construction Robotics is dedicated to bringing intelligent automation to the parts of construction that need it most — tasks that are physically demanding, time-sensitive, and hard to scale with manual labour alone.
Our products cover the full arc of rebar work: the RBTS1, the world's leading fully autonomous rebar tying robot; intelligent rebar cutting production lines; robotic arm systems; and custom automation built around your site's specific requirements. Our products have been commercially deployed and validated on over 80 real construction sites across Hong Kong SAR, mainland China and the Middle East.
Our Story
Latest News
Stay updated with our latest developments
January 26, 2026
Singapore Government Delegation Visits HKCRC — Castor Robotics Demonstrates RBTS1 Live
Led by Singapore Minister for National Development Chee Hong Tat, a senior government delegation visited HKCRC, where Castor Robotics demonstrated the RBTS1 rebar tying robot, showcasing its autonomous tying and auto-lane-switching capabilities.
December 16, 2024
Rebar Tying Robot Wins 2023–24 Hong Kong Awards for Industries
The rebar tying robot received the Equipment and Machinery Design Award at the 2023–24 Hong Kong Awards for Industries ceremony held at the Hong Kong Convention and Exhibition Centre.
Ready to Transform Your Construction Site?
Contact us to learn how our robotic solutions can improve efficiency and reduce costs.
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