HDG Black Oxide High-strength Bolt Connection Set Torsion-bending Bolt Torsional Shear Bolts Steel Structure Bolt

Installation is convenient and efficient: The design adopts a twist-shear type, during installation, only a dedicated electric wrench is needed to break the flower head to complete the preload control. No additional torque detection is required, which significantly improves construction efficiency and reduces labor costs.

Connection is highly reliable: Through pre-tension to achieve frictional connection, it has excellent anti-slip performance, can effectively resist vibration, impact and alternating loads, avoid connection loosening, and ensure the long-term safety and stability of the structure.

Weather-resistant and corrosion-resistant durable: Various surface treatment options such as hot-dip galvanizing and Dacromet are provided. It can be used in humid and corrosive environments for a long time, significantly extending the product's service life and reducing maintenance frequency.

Precision control is precise: Strictly following national standards for production, the cooperation accuracy of bolts, nuts and washers is high, the preload consistency is good, and each set of connection pair ensures stable and compliant mechanical performance.

Structural Design: Round-head torsional shear type. It enables intuitive confirmation of the pre-tightening force reaching the design value. The installation process is visualized and traceable.

Material Properties: High-strength alloy steel is selected. After quenching and tempering treatment, its tensile strength and yield strength far exceed those of ordinary bolts. It can withstand heavy loads and is suitable for heavy-load structural scenarios.

Specification Compatibility: Multiple diameter specifications (such as M16, M20, M22, M24, etc.) and length options are provided. It can match different thickness steel structure components, meeting diverse engineering requirements.

Appearance Differentiation: Available in black oxidation, silver-gray hot-dip galvanizing and other appearances. This not only meets the anti-corrosion requirements but also facilitates the specification identification and management at the engineering site.

Building steel structure: Widely used in the connection of beams and columns, as well as the splicing of trusses in steel structure buildings such as high-rise office buildings, large venues, and industrial plants. It is a key fastening component of the core load-bearing nodes.

Bridge engineering: Suitable for the connection of steel box girders and steel truss girders of highways and railways. It can withstand alternating loads such as vehicle passage and wind force, ensuring the safety of the bridge structure.

Power and communication towers: Used for the component splicing of transmission towers and communication base station towers. It can maintain stable connection even under extreme conditions such as strong winds and earthquakes.

Mechanical and lifting equipment: Applied to the connection of steel structures of large-scale construction machinery and lifting equipment, capable of withstanding high-intensity vibration and impact, ensuring the reliable operation of the equipment.

Rail transportation: Serves the track support steel structure and vehicle body connection of subways and high-speed railways, meeting the strict requirements of high reliability and long lifespan for rail transportation.