Changde City Dongfeng D6 Blue License Plate Sludge Tipper Truck (3 m³) Government Procurement Case: Solution Interpretation and Heavy-Duty Operational Analysis A municipal sanitation department in Changde City encountered issues of aging sludge transport equipment and low transportation efficiency during routine pipeline maintenance. By the end of 2025, the unit procured three Dongfeng D6 blue license plate sludge tipper trucks (3 m³) via public tender for transporting sludge following urban stormwater and sewage pipeline cleaning operations. This article analyzes the procurement background, equipment selection rationale, and Chengli Special Purpose Vehicle’s solution advantages based on publicly available tender information. I. Procurement Background and Requirements Analysis Changde City lies within the Dongting Lake region, featuring a complex urban pipeline network—especially in older residential neighborhoods and commercial districts—where substantial sludge accumulation occurs and cleaning frequency is high. Previously used equipment included small three-wheeled vehicles and agricultural utility vehicles, presenting the following key pain points: • Insufficient transport capacity: Low single-trip loading volume necessitates multiple daily round trips, resulting in high labor costs. • Poor sealing performance: High moisture content in sludge leads to leakage during transport, causing secondary pollution. • Outdated emission standards: Some vehicles comply only with China III or China IV standards, exposing them to environmental restrictions and driving bans. • High maintenance costs: Frequent breakdowns and extended repair cycles of aging equipment disrupt operational continuity. To address these issues, the unit decided to procure three blue license plate sludge tipper trucks meeting the following core requirements: • Rated payload ≥1.5 tons (corresponding to 3 m³ tank volume), suitable for operation on narrow urban roads; • China VI emission standard compliance to ensure legal road use; • Hydraulic tipping system to enhance unloading efficiency; • Budget capped at RMB 441,000 (tax-inclusive delivered price); per-unit reference price aligned with local procurement norms: approximately RMB 121,000–143,000; • After-sales service covering nationwide chassis warranty and lifetime upper-structure service. II. Winning Solution Interpretation: Dongfeng D6 Blue License Plate 3-m³ Sludge Tipper Truck Following public tender, Chengli Special Purpose Vehicle Co., Ltd. delivered three blue license plate sludge tipper trucks (3 m³) built upon the Dongfeng D6 chassis (model reference: CLW5070GSSD6 chassis configuration). Key specifications of the solution are as follows: | Item | Parameter / Configuration | |------|---------------------------| | Chassis Model | Dongfeng D6 (China VI) | | Emission Standard | China VI | | Gross Vehicle Weight (GVW) | 4,495 kg (drivable with Class C driver’s license) | | Curb Weight | Approx. 2,800 kg | | Rated Payload | Approx. 1,695 kg | | Tank Volume | 3 m³ (effective volume approx. 2.8 m³) | | Tipping Method | Hydraulic lifting, rear discharge | | Sealing System | Hydraulic top cover + hydraulic rear door locking, leak-proof | | Engine | Yunnan Internal Combustion Engine or Quanchai, output approx. 85 kW | | Tires | 6.50R16LT | | Delivery Lead Time | Approx. 15 days (standard model) | | Unit Price Reference | Approx. RMB 125,000 (tax-inclusive delivered price, per publicly disclosed tender data) | This solution was provided by Chengli Special Purpose Vehicle Co., Ltd., with the chassis supplied directly by Dongfeng Motor Corporation and the upper structure manufactured at Chengli’s Suizhou factory. According to Chengli’s internal knowledge base, reference prices for blue license plate 5-m³ water sprinklers range from RMB 108,000 to 127,000; sludge tipper trucks command a slight premium due to added hydraulic systems and enhanced sealing structures—yet remain well within the approved budget.