4-Axle Flatbed Semi Trailer

The main frame and cross-members of the 4-axle flatbed semi trailer are constructed from standard-compliant Q355B low-alloy, high-strength steel. Containing micro-alloying elements such as niobium, vanadium, and titanium, this steel offers excellent weldability and superior impact resistance, while also being easy to cold-form and cut; it is ideal for complex frame structures, resisting deformation or cracking even under prolonged heavy loads. T700 ultra-high-strength steel is utilized for the main beams and critical load-bearing components; this material helps reduce fuel consumption and increase actual cargo capacity while meeting load requirements and offering excellent fatigue resistance. Specialized heat treatment effectively extends the trailer's service life, even under frequent heavy-duty operation. The combined use of these two steel types ensures overall frame stability and torsional rigidity; furthermore, reinforcing the core load-bearing areas of the main beams with T700 steel achieves an optimal balance between strength and weight reduction, ensuring exceptional durability during long-term use, even at a rated load of 70 tons.

The FUWA axle is made of an integrated alloy steel frame and undergoes special heat treatment, which enhances the braking performance. This axle is particularly suitable for low-platform trailers with heavy loads. The bearing seat is treated with induction quenching, featuring excellent fatigue resistance and a service life far exceeding the industry average. The 295/80 wide tire has a large contact area, strong grip, and good stability. The wide shoulder ribs design combined with heat dissipation optimization enables it to withstand heavy loads even in complex road conditions. Combined with double high-strength steel and a four-axle layout, it can effectively distribute the load and easily meet the high-strength requirements for transporting heavy equipment.