Dongfeng xinjiang truck parts Steel plate assembly 2912010-KNA30AY

Built for heavy-haul truck demands, this steel plate assembly features a reinforced Q355ND low-alloy high-strength steel structure—ideal for chassis load-bearing scenarios. The 10mm-thick main plate delivers a minimum yield strength of 355MPa and tensile strength of 470-630MPa, enabling it to withstand long-term static loads of up to 60kN (equivalent to 6 tons) or occasional impact forces from road bumps without deformation. Key stress points (e.g., hole peripheries, edge joints) are reinforced with 5mm-thick steel ribs, which distribute pressure evenly and prevent cracking at high-stress areas. Unlike ordinary carbon steel plates, Q355ND’s low-temperature toughness (-40℃ impact energy ≥34J) avoids brittle fracture in freezing winter conditions. This robust strength ensures the assembly reliably supports critical chassis components (e.g., leaf spring brackets, air tanks) during heavy cargo transportation (25+ tons)

Engineered to resist corrosion from road salt, rain, mud, and humidity—major threats to truck chassis parts—the assembly features a professional anti-corrosion system. First, a zinc phosphate pretreatment layer (8μm) is applied to the steel surface to block rust at the substrate. Then, a high-temperature electrostatic powder coating (70-90μm) with epoxy-polyester composite is baked on, forming a scratch-resistant, waterproof barrier that resists peeling or fading. Finally, a clear chromate passivation layer enhances coating adhesion and chemical resistance. This system passes 1200-hour salt spray testing (ASTM B117) with no red rust, ensuring the assembly remains corrosion-free for over 8 years in coastal areas or winter roads with deicing salt. All threaded holes are coated with anti-seize compound, preventing thread rust and enabling easy bolt removal during maintenance

Designed for efficient installation, the steel plate assembly comes pre-assembled with all necessary hardware—10 galvanized M12×40 bolts, lock washers, and flat washers that match the truck’s chassis thread specifications. No specialized tools are required; a standard torque wrench (set to 45N·m) is sufficient to secure the assembly. Installation steps are straightforward: align the assembly’s holes with the chassis’ pre-drilled mounting points, insert the bolts through the washers, and tighten to the recommended torque. The assembly’s flat surface and precise hole positioning allow one technician to complete installation in 25 minutes or less, avoiding time-consuming on-site adjustments. For repair shops or truck operators, this pre-assembled design reduces labor costs and minimizes chassis downtime—critical for commercial trucks relying on daily transportation tasks

Beyond basic load-bearing, the steel plate assembly is designed to support multiple critical chassis functions in Dongfeng Xinjiang trucks. It serves as: 1) A leaf spring mounting reinforcement—adding rigidity to the chassis bracket to prevent deformation under heavy suspension loads; 2) An air storage cylinder base—providing a stable, flat surface for securing 50L+ air tanks with anti-vibration rubber pads; 3) A brake valve mounting plate—offering precise hole positioning for brake system components to ensure hydraulic/pneumatic line alignment. Its smooth surface also allows for secondary installation of aftermarket accessories (e.g., chassis sensors, tool brackets) without compromising structural integrity. This versatility makes the assembly a multi-purpose spare part, reducing inventory costs for repair facilities and ensuring truck owners have a reliable solution for various chassis maintenance needs