Dongfeng KR truck parts Front top middle bottom plate process assembly 5704910-C5100

Designed as a one-piece process assembly (combining front top, middle crossbeam, and bottom floor plates), it enhances the cab’s overall structural rigidity by 35% compared to separate replacement parts. The assembly uses 3.2mm-thick high-strength low-alloy steel (Q345B grade, tensile strength 470–630 MPa) for the base material, with reinforced middle crossbeams (5mm-thick steel) that distribute weight and impact forces across the cab frame. This integrated structure acts as a “backbone” for the front cab section, supporting crash safety performance (meeting ECE R29 cab strength standards) by absorbing and dispersing frontal impact energy. It also provides stable mounting for critical components: the front top plate secures the windshield frame, the middle plate supports the dashboard and steering column, and the bottom plate reinforces the floor against heavy foot traffic and cargo loads. Unlike disjointed plates that weaken cab integrity, this assembly ensures long-term structural stability for 8+ years of heavy use

Engineered to resist corrosion from rain, road salt, humidity, and UV radiation (critical for front-facing and underfloor cab sections), the assembly features a four-stage anti-corrosion treatment. First, it undergoes hot-dip galvanization (zinc coating thickness ≥95μm) to create a base rust barrier. Next, an electrophoretic primer (75μm thickness) is applied for enhanced adhesion and moisture resistance, followed by a high-build epoxy intermediate coat (65μm) to fill surface imperfections. Finally, a polyester topcoat (55μm thickness, matching the cab’s original paint color) provides scratch resistance and UV protection. This coating system passes 1,300 hours of neutral salt spray testing (equivalent to 11 years of road salt exposure) without rust, peeling, or fading—far outperforming single-layer painted plates that corrode within 2–3 years. The bottom floor section also receives an additional 2mm-thick anti-chip undercoat to resist damage from road debris

Designed to prevent water intrusion and wind noise, the assembly integrates specialized sealing features at all critical joints. The front top plate’s flange (mating with the windshield frame) is pre-coated with automotive-grade butyl rubber sealant (1.8mm thickness) that forms a permanent waterproof bond during installation. The middle crossbeam includes foam weatherstrip grooves (15mm width) that accept the original cab’s EPDM rubber strips, blocking wind from entering the dashboard gap. The bottom floor plate has laser-cut drainage channels (6mm width) along the edges, redirecting rainwater or condensation toward the cab’s existing drain holes—preventing pooling that causes floor rust. Additionally, all component cutouts (e.g., wiring ports) are fitted with rubber grommets (included) to seal gaps and protect electrical systems from moisture. Unlike poorly sealed assemblies that develop leaks or drafts, this design keeps the cab dry and quiet in heavy rain or high-speed driving

Designed for efficient installation by professional body shops or fleet technicians, the assembly simplifies the replacement process with user-centric features. All mounting holes are pre-drilled (9mm diameter) and deburred to accept OEM-spec M8×25mm bolts, and the flanges are marked with laser-etched welding guides (12mm weld spacing) to ensure proper joint strength. The assembly’s surface is pre-cleaned and treated with a weldable primer, eliminating the need for additional surface preparation before welding. It is fully compatible with the Dongfeng KR’s original cab hardware: the front top plate aligns with windshield mounting clips, the middle plate matches dashboard brackets, and the bottom plate fits floor trim fasteners—no adapter parts required. Installation takes 3–4 hours (including welding and finishing), and the assembly’s contour matches the original so closely that minimal paint blending is needed. Each unit undergoes dimensional verification via CMM, load-bearing testing, and corrosion resistance checks, backed by a 36-month warranty against defects (e.g., rusting, warping, flange cracking)