Steel structure bolts, also known as high-strength structural bolts, are critical fastening components specifically engineered for steel frame construction, bridge engineering, and heavy-load bearing structures. These bolts are designed to transmit significant shear and tensile loads through structural connections, ensuring the integrity and safety of buildings, bridges, towers, and industrial facilities.

Manufactured from high-quality alloy steel and carbon steel, our structural bolts are available in strength grades 8.8, 10.9, and 12.9, conforming to international standards including ISO 898-1, ASTM A325, ASTM A490, and GB/T 1231. Each bolt is precisely cold-headed and thread-rolled to achieve consistent dimensional accuracy and superior mechanical properties.

Our steel structure bolts feature precision-rolled threads that provide excellent fatigue resistance and reliable torque retention. The thread fit is engineered to meet strict connection requirements, ensuring proper load transfer and preventing loosening under dynamic loads and vibration. Available in various head configurations including hexagon head, heavy hex head, and torsion-shear types to accommodate different installation methods and structural designs.

To meet the demanding corrosion protection requirements of outdoor and marine environments, we offer comprehensive surface treatment options including hot-dip galvanizing, dacromet coating, zinc plating, and anti-corrosion oil coating. These treatments provide extended service life in harsh conditions, reducing maintenance costs and ensuring long-term structural reliability.

Every steel structure bolt undergoes rigorous quality inspection including chemical composition analysis, tensile testing, hardness verification, impact testing, and dimensional inspection. We provide complete material test reports, mill certificates, and torque-tension test data with each shipment, ensuring full traceability and compliance with project specifications.

With proven experience supplying to state grid projects, bridge constructions, high-rise buildings, and industrial plants, Handan Jiaxiong’s steel structure bolts offer the strength, reliability, and consistency required for critical engineering applications. Our comprehensive quality assurance system and extensive production capacity ensure on-time delivery for projects of any scale.