Zhuzhou Dongfeng D6 Blue-Plate Sewage Treatment Vehicle Government Procurement Case and Chassis Selection Solution Interpretation In the municipal sanitation sector, the selection of sewage treatment vehicles directly impacts the operational efficiency and cost control of urban drainage systems. Recently, a municipal sanitation department in Zhuzhou (hereinafter referred to as the 'procuring entity') procured a batch of blue-plate sewage treatment vehicles to meet local sewer network maintenance requirements. This article takes this case as a starting point to deeply analyze the chassis selection rationale for the Dongfeng D6, compare technical features of mainstream chassis—including Dongfeng, Sinotruk (Howo), Foton (Ouman), and FAW Jiefang—and interpret the configuration and procurement advantages of Chengli Special Purpose Vehicle’s flagship model CLW5070GSSD6, providing reference for similar procurement projects. I. Case Background and Procurement Requirements The procuring entity is responsible for sewer pipe cleaning and emergency response tasks across multiple urban districts in Zhuzhou. According to publicly released tender information, the project’s total procurement budget was capped at approximately RMB 3.33 million. Primary requirements included blue-plate sewage treatment vehicles (gross vehicle weight ≤ 4.5 tons) capable of suction, filtration, dewatering, and temporary storage—intended for routine maintenance and flood-season emergency operations. Key evaluation criteria included: • Load Capacity & Maneuverability: Narrow roads in Zhuzhou’s older urban districts necessitated a balance between load-bearing capability and agile maneuverability. • Maintenance Convenience: The chassis required nationwide authorized service network coverage to minimize downtime due to repairs. • Regulatory Compliance: Must comply with China VI emission standards and support nationwide registration and annual inspection. • Cost Control: Achieve optimal cost-performance ratio within budget, avoiding overspending. After multiple rounds of evaluation, the procuring entity selected Chengli Special Purpose Vehicle’s sewage treatment vehicle built on the Dongfeng D6 chassis. The delivered units are now operational across multiple streets in Zhuzhou, with users reporting high ease of operation and excellent suction efficiency. II. Chassis Selection Comparison: Dongfeng / Sinotruk / Foton / FAW Jiefang In the blue-plate sewage treatment vehicle segment, chassis selection critically influences vehicle performance and long-term maintenance. Based on data from Chengli Special Purpose Vehicle and common market configurations, the following table compares core differences among the four leading chassis platforms: Comparison Dimension Dongfeng D6 (Chengli’s Flagship Recommendation) Sinotruk Howo Foton Ouman FAW Jiefang Tiger V Engine Model (Reference) Chaoyang Diesel / Yuchai; displacement 2.8–3.0 L Weichai; displacement 2.9 L Cummins; displacement 2.8 L Dalian Diesel / Xichai; displacement 3.0 L Maximum Gross Vehicle Weight Approx. 4.5 tons (blue-plate upper limit) Approx. 4.5 tons Approx. 4.5 tons Approx. 4.5 tons Wheelbase 2,700–3,300 mm 2,800–3,300 mm 2,700–3,360 mm 2,800–3,300 mm Turning Radius Approx. 13 m (ideal for narrow streets) Approx. 14 m Approx. 13.5 m Approx. 14.5 m Rear Axle Load Capacity 2.5–3.0 tons 2.5–3.5 tons 2.5–3.0 tons 2.5–3.0 tons After-Sales Service Network Coverage Over 2,000 Dongfeng nationwide authorized service centers Approx. 1,500 Sinotruk authorized service centers Approx. 1,800 Foton authorized service centers Approx. 1,700 FAW Jiefang authorized service centers China VI Emission Compliance Fully supported Fully supported Fully supported Fully supported Typical User Feedback Excellent maneuverability and low fuel consumption, as demonstrated in the Zhuzhou case Stable under heavy loads but slightly higher fuel consumption Comfortable driving experience but relatively higher acquisition cost