Leaf spring is the core mechanical suspension component widely installed on various semi trailers, including flatbed, skeleton, fence and low bed trailers. It bears the cargo load, absorbs vibration and impact generated from uneven road surfaces, keeps stable connection between axles and trailer frame, and effectively protects chassis, tires and transported goods during long-distance heavy haulage.

Our leaf springs are made of high-quality spring steel, processed by hot rolling, quenching and tempering heat treatment. Such craftsmanship delivers high yield strength, excellent toughness and fatigue resistance, which prevents permanent deformation or fracture under repeated heavy load. Each leaf spring assembly consists of multiple stacked steel plates, with friction between plates to damp shocks without complicated auxiliary devices.

We supply different specifications to match American suspension, German suspension and single-point suspension. Options cover different tonnage ratings, lengths and plate quantities to satisfy customers’ requirements for highway transportation and rough off-road conditions. Surface anti-rust painting is available to resist corrosion in humid, dusty or cold environments. All finished leaf springs pass strict load and fatigue testing before shipment. With simple structure, convenient maintenance and competitive cost, leaf spring suspension remains the most popular choice for heavy-duty semi trailer logistics worldwide.