In which types of projects are torsion-shear bolts suitable?

Torsional shear bolts are specialised fasteners for high-strength steel structures of grade 10.9S. Thanks to their key advantages—including ease of installation, precise preload, fatigue resistance and high stability—they effectively mitigate the problems of uneven tightening and loosening failure associated with ordinary bolts. Widely used in various steel structure engineering projects with stringent requirements for structural safety, precision and durability, they are a core connecting component in modern infrastructure projects.
Steel structural engineering in the construction sector is their primary application, encompassing projects such as super-high-rise buildings, large-scale commercial venues and industrial plants. In high-rise and super-high-rise buildings, these bolts are frequently used at the joints of steel frame beams and columns, as well as in the assembly of bracing structures; their precise preload capacity enables them to withstand wind pressure and seismic loads, ensuring the stability of the building’s main structure. At the same time, they are also widely used in large-span spatial steel structure projects such as large exhibition centres and sports venues, as well as in the construction of connections between steel columns and crane beams in industrial plants, meeting the structural requirements of large spans and high load-bearing capacities.
Transport bridge engineering is a key area of application, including road bridges, railway bridges, viaducts and steel pipe bridges. Bridge structures are subjected to long-term vehicle impacts, wind-induced vibrations and alternating loads, placing extremely high demands on the fatigue and shear resistance of fasteners. Torsional shear bolts are primarily used for the splicing of steel box girders, the connection of bridge decks, and the fixation of bearings and main girder joints. They provide uniform fastening and are resistant to loosening, enabling them to withstand the dynamic loading conditions of bridges over the long term and significantly enhancing the durability of bridge structures.

Application scenarios

Furthermore, these bolts are widely used in new energy and tower infrastructure projects, such as structural connections for wind turbine tower flanges, power transmission pylons and telecommunications towers, where they can withstand extreme weather conditions and continuous vibration. They are also frequently utilised in heavy-duty steel structure projects, such as port terminals, airports and large equipment foundations, as well as in specialised engineering applications including cryogenic storage tanks and offshore platforms. Their installation requires no complex testing and offers high construction efficiency, making them well-suited to the large-scale construction demands of major projects.