Dongfeng xinjiang truck spare parts steel plate 2912010-T8M300Y

Constructed from Q355B high-strength low-alloy steel—an industry benchmark for heavy-duty truck components—this steel plate delivers exceptional mechanical performance. It has a minimum yield strength of 355MPa and tensile strength of 470-630MPa, enabling it to withstand long-term static loads (up to 50kN) or occasional impact forces (e.g., from road bumps) without permanent deformation. The 8mm-thick steel structure balances weight and strength, avoiding unnecessary chassis load while ensuring reliable support for critical components (e.g., brake calipers, air tanks). Unlike ordinary carbon steel plates, Q355B’s alloy composition (manganese, silicon) enhances toughness, even in low temperatures (-40℃), preventing brittle fracture in harsh winter conditions. This material strength is critical for maintaining chassis stability during heavy-haul transportation (e.g., cargo loads of 20+ tons)

The steel plate undergoes advanced CNC (Computer Numerical Control) machining to achieve strict dimensional accuracy and surface quality. Its length/width tolerance is controlled within ±0.5mm, and the pre-drilled holes have a concentricity error of ≤0.1mm—ensuring perfect alignment with the truck’s mounting bolts and avoiding forced assembly that could damage threads. The plate’s surface is shot-blasted to Sa2.5 standard, removing rust, scale, or burrs and creating a rough texture that improves coating adhesion. Edges are deburred and rounded (radius: 2mm) to prevent scratches on adjacent components or injury during installation. This precision machining guarantees that the plate fits seamlessly into the truck’s structure, maintaining uniform load distribution and reducing stress concentration at mounting points

To resist corrosion from road salt, rain, mud, and humidity—common threats to truck chassis components—the steel plate features a three-layer protective coating system. First, a zinc-rich epoxy primer (thickness: 60μm) is applied to form a sacrificial barrier against rust. Then, a high-gloss polyester topcoat (40μm) is baked on, providing scratch resistance and UV protection to prevent fading. Finally, a clear chromate passivation layer enhances coating adhesion and water resistance. This system passes 1,000-hour salt spray testing (per ASTM B117) with no red rust, ensuring the plate remains corrosion-free for over 8 years in coastal or winter road conditions. All pre-drilled holes are also coated with anti-seize compound, preventing thread rust and ensuring easy bolt removal during future maintenance

While engineered for Dongfeng Xinjiang trucks, this steel plate’s design supports multiple critical chassis functions, making it a versatile spare part. It is commonly used as: 1) A suspension reinforcement plate—adding rigidity to leaf spring mounting brackets to prevent cracking under heavy loads; 2) A component base plate—providing a stable mounting surface for air storage cylinders or brake valves; 3) A chassis repair plate—replacing corroded or damaged original plates to restore structural strength. Its flat, solid structure also allows for custom drilling (if needed) for aftermarket component installations (e.g., GPS trackers, tool boxes), though OE-matching use is recommended to maintain safety. This versatility reduces inventory costs for repair shops and ensures truck operators have a reliable solution for multiple chassis maintenance needs