Suizhou Dongfeng D6 Sludge Self-Dumping Truck (Blue License Plate, 3 m³): Government Procurement Case Study and Bid-Winning Solution Analysis In daily municipal sanitation operations, sludge transportation is a critical and specialized task. Whether it’s dewatered sludge from wastewater treatment plants or slurry from urban pipeline cleaning, a dedicated vehicle capable of efficient loading while complying with urban road access regulations is essential. Recently, a municipal sanitation department publicly procured a batch of blue-license-plate, 3 m³ sludge self-dumping trucks to meet local pipeline maintenance and sludge transfer requirements. After comprehensive evaluation, the solution featuring the Chengli-built body mounted on the Dongfeng D6 chassis was selected as the winning bid and has now been delivered and put into service. Customer feedback indicates stable operation and high operational efficiency. This article analyzes the vehicle selection rationale and technical advantages of this solution based on real-world application, providing reference guidance for similar procurement projects. I. Procurement Background and Core Requirements The procuring entity is the sanitation station under a district-level Urban Management Bureau, primarily responsible for routine cleaning of urban sewage pipelines and transporting the excavated sludge to designated treatment facilities. Core requirements include: • Road Access Priority: The vehicle must be registered with a blue license plate (drivable with a Class C1 driver’s license), enabling unrestricted operation within urban core areas without being subject to yellow-plate traffic restrictions. • Loading Capacity: The tank’s effective volume must reach 3 m³ to ensure sufficient single-trip hauling capacity and minimize round trips. • Sealing Performance: Leakage, spillage, or dripping during transport must be completely prevented to avoid secondary pollution. • Budget Control: The procurement budget is capped at approximately RMB 136,000 per unit (per publicly disclosed tender information), inclusive of registration, initial maintenance, and related fees. After multiple rounds of solution evaluation, the blue-license-plate, 3 m³ sludge self-dumping truck built on the Dongfeng D6 chassis with Chengli bodywork was ultimately selected. II. Comparative Technical Specifications Across Five Mainstream Models To assist procurement entities in comprehensively understanding available market options, we have compiled a comparative specification table for leading blue-license-plate, 3 m³ sludge self-dumping trucks. All data are sourced from the Ministry of Industry and Information Technology (MIIT) announcements and official manufacturer publications; the Chengli model is designated CLW5040ZWXD6. Parameter Item Chengli CLW5040ZWXD6 Competitor A Competitor B Competitor C Competitor D Chassis Brand Dongfeng D6 Foton Times FAW Jiefang Hu VN Sinotruk HOWO JAC Junling Engine Model Quanchai Q23-115E60 Quanchai Q23-115C60 Weichai WP2.3Q115E50 Weichai WP2.3Q110E50 Yunnei D20TCIF1 Emission Standard China VI China VI China VI China VI China VI Tank Volume 3 m³ 3 m³ 2.8 m³ 3.2 m³ 3 m³ Gross Vehicle Weight 4,495 kg 4,495 kg 4,495 kg 4,495 kg 4,495 kg Rated Payload 1,495 kg 1,450 kg 1,380 kg 1,500 kg 1,470 kg Dumping Mechanism Hydraulic Lifting Hydraulic Lifting Hydraulic Lifting Hydraulic Lifting Hydraulic Lifting Tank Material Q235 Carbon Steel Q235 Carbon Steel Q235 Carbon Steel Q235 Carbon Steel Q235 Carbon Steel Sealing Method Dual-Lock Sealing Single-Lock Sealing Dual-Lock Sealing Single-Lock Sealing Dual-Lock Sealing Reference Price (RMB 10,000)