Hot-dip galvanized anchor bolts are pre-embedded fasteners used to secure equipment foundations, steel structure columns, tower bases, and streetlight poles to concrete foundations. These hot-dip galvanized anchor bolts typically come in the form of hooks, J-shaped bends, or straight bolts with anchor plates, pre-embedded in the concrete, with the upper thread protruding above ground for connecting to the equipment base. Since the portion of the anchor bolt embedded in the concrete is constantly exposed to a humid, alkaline environment, while the exposed portion is subject to corrosion from the atmosphere, rainwater, and potentially harmful media, hot-dip galvanized anchor bolts can resist both alkaline corrosion from the concrete and external atmospheric corrosion. In wind power foundations, chemical plant buildings, port crane rails, and highway light poles, hot-dip galvanized anchor bolts are key components ensuring the permanent stability of the structure.
Hot-dip galvanized U-bolts are primarily used to secure pipes, cable trays, ducts, and supports to beams, columns, or foundation slabs. These hot-dip galvanized U-bolts are often used with clamping plates or flat steel, with clamping force generated by the threaded nuts at both ends. In outdoor water supply and drainage pipelines, petrochemical pipe racks, power cable trenches, and offshore platform pipe racks, hot-dip galvanized U-bolts, with their advantageous shape and excellent corrosion resistance, have become the preferred fastener for pipe clamp support systems. While ordinary U-bolts rust outdoors within months, hot-dip galvanized U-bolts can be used for over 10 years in humid, salt spray, and weakly acidic/alkaline environments.
High-strength wheel bolts are critical safety components connecting wheel hubs and rims in automobiles, trucks, buses, construction machinery, and agricultural machinery. A typical set of high-strength wheel bolts usually includes the bolt body and a matching wheel nut, sometimes with a flange or guide cone. Because wheels bear radial loads, lateral forces, braking torques, and road impacts during operation, high-strength wheel bolts must possess extremely high shear resistance, fatigue strength, and anti-loosening properties. In the commercial vehicle and mining vehicle sectors, failure of high-strength wheel bolts can directly lead to wheel detachment and serious accidents; therefore, their manufacturing process often adheres to stricter quality control standards. Furthermore, with the increasing demands for unsprung mass and braking performance in new energy vehicles, high-strength wheel bolts are continuously evolving towards lighter weight and higher corrosion resistance.
Hot-dip galvanized L-bolts are special anchors bent at a 90° angle with a threaded end, commonly used at the edges or sides of concrete foundations where stress is applied. The L-shaped hook of this particular hot-dip galvanized L-bolt is embedded in the concrete, providing pull-out and shear resistance, while the threaded end is exposed for connecting equipment or supports. In the connection of wall column foundations, solar photovoltaic supports, small tower bases, and precast concrete components, hot-dip galvanized L-bolts effectively transfer tensile and shear forces. Compared to straight anchor bolts, the L-shaped anchoring end of the hot-dip galvanized L-bolt provides better pull-out resistance while saving the bottom space occupied by the hook. After hot-dip galvanizing, hot-dip galvanized L-bolts can operate reliably for a long time in moist soil and atmospheric environments.
High-Strength Double End Studs are special fasteners with threaded ends and a smooth center. They are designed to solve structural connection problems involving deep holes, confined spaces, or periods of disassembly. These High-Strength Double End Studs are widely used in petrochemical reactors, high-pressure flanges, large diesel engine cylinder heads, compressor housings, and wind turbine gearboxes. Compared to single-ended bolts, High-Strength Double End Studs do not wear down the threads of the base material during disassembly, and can be adapted to different connection thicknesses by adjusting the thread lengths at both ends. Under high-temperature or alternating temperature conditions, High-Strength Double End Studs, when used with special lubricating or heat-insulating gaskets, can effectively control preload decay caused by thermal stress.
Hot-dip galvanized hook bolts are fasteners with a hook shape at one end and a threaded end. They are primarily used for connecting curtain wall joists, fixing roof purlins, hoisting precast wall panels, and pipe hanger systems. The hook end of these hot-dip galvanized hook bolts can be quickly hooked onto the edges of structural openings, channel steel, or embedded parts, forming temporary or permanent connections without the need for nuts, greatly improving installation efficiency. In building curtain wall projects, hot-dip galvanized hook bolts are commonly used to connect vertical joists to the main structure, bearing wind loads and their own weight. In factory roof systems, hot-dip galvanized hook bolts are used to fix purlins to roof beams. Since curtain walls and roof systems are constantly exposed to rain, ultraviolet radiation, and temperature fluctuations, hot-dip galvanized hook bolts provide an economical and efficient corrosion protection solution.