The machining of core components for Bailey steel bridges

The machining of core components for Bailey steel bridges is achieved through the combined use of high-precision CNC equipment, premium alloy materials, and rigorous welding and assembly processes. This relentless pursuit of precision ultimately results in the unique advantages of Bailey bridges-lightweight components, easy disassembly and reassembly, and strong adaptability.

Pins and Bolts: The "Joints" of Connection
Precision and Fit: The clearance between pin diameter (e.g., 49.5 mm for Type 321) and the pin hole in Bailey panels (approximately 50 mm) must be strictly controlled within 0.1–0.2 mm. The center-to-center deviation of panel holes must not exceed 0.2 mm to ensure accurate alignment when multiple panels are joined.

Beams and Other Components
Beams: Serving as lateral supports for the bridge deck, beams are either cast in a single piece using sand molds or fabricated by cutting and drilling structural steel sections. Other Components: Deck plates, support frames, end columns, bridge bearings, and other accessories are also manufactured using similar processes including material cutting, drilling, and welding.