Publish Time: 2026-09-29 Origin: Site
In Zhengzhou, a research institute focused on science and technology, innovation, and core technology breakthroughs - the Harbin Institute of Technology Zhengzhou Higher Research Institute, abbreviated as the “HIT Zhengzhou Research Institute”- is accelerating the transformation of scientific and technological achievements and industrial empowerment in response to major national needs and the local industrial ecosystem. What supports the daily operation of this research institute is not only the cutting-edge technology in its laboratories, but also the floor spring doors that open and close hundreds of times every day. As the first point of contact for visitors, they carry first impressions while also enduring the most frequent usage challenges. Long-term, high-frequency opening and closing places extremely high demands on the stability and durability of hardware components.
In response to this need, 3H Building Hardware provided the HIT Zhengzhou Research Institute with a complete floor spring door and floor spring solution, meeting the challenges of high-frequency scenarios with solid product strength.
Product Applications
1) 3H Building Hardware floor spring door: adopts a 304 stainless steel eccentric pull handle, with a powder-coated anti-fingerprint surface finish;
2) 3H Building Hardware B-840 floor spring:
From load capacity to speed adjustment, from service life to installation, the B-840 responds to the rigorous demands of the research institute with a complete set of performance features: 150 kg load capacity to handle large-sized door leaves, a service life of over 500,000 cycles to cover ten years of high-frequency use, 130° bidirectional wide-angle opening to balance traffic efficiency, two-stage speed adjustment, and 3D adjustability.
Project video
Although the floor spring is a “hidden functional component” in building accessories, it is a core embedded component for load bearing, buffering, and positioning in the door control system. 3H Building Hardware will continue to focus on product reliability and applicability, providing standardized, durable, and long-lasting overall solutions for more public buildings and commercial spaces.