Yancheng Dongfeng D6 Sludge Self-Dumping Truck (Blue Plate, 3 m³): Government Procurement Case and Technical Solution Overview In a 2025 sludge removal equipment upgrade project undertaken by a municipal sanitation department in a district of Yancheng City, a batch of Dongfeng D6 chassis-based, blue-plate, 3 m³ sludge self-dumping trucks became the focal point. A total of eight units were delivered, with an aggregate contract value estimated between RMB 800,000–1,000,000 (based on publicly available tender information), and unit price controlled at approximately RMB 100,000–120,000. Due to their blue-plate classification (drivable with C-class driver’s license), high maneuverability for urban streets and alleys, and suitability for residential communities and sewer network maintenance, such compact sludge trucks are increasingly entering government procurement scopes. Based on Chengli Special Purpose Vehicle Co., Ltd.’s (CLW5070GSSD6 and other model numbers) actual delivery experience, this article provides industry peers with a comprehensive case study and technical solution analysis. Project Overview: Yancheng Municipal Sanitation Department | 8 units of Dongfeng D6 Blue-Plate 3 m³ Sludge Self-Dumping Trucks | Total contract value approx. RMB 800,000–1,000,000 (based on publicly available tender information) | Delivery timeline: ~15 days from contract signing to first batch delivery (standard Chengli production cycle) | Chassis brand: Dongfeng I. Project Background and Procurement Requirements Analysis The municipal sanitation department is primarily responsible for sewage pipe network maintenance in older residential neighborhoods, narrow backstreets, and certain industrial parks within the urban area. Its aging sludge trucks had reached end-of-life and were mostly yellow-plate vehicles, proving inconvenient for operation on narrow roads. Key procurement requirements included: • Blue-plate classification, operable with C-class driver’s license: To lower driver qualification thresholds and facilitate personnel allocation. • Body capacity: 3 m³ — balancing daily sludge transport volume with road maneuverability. • Self-dumping functionality: Hydraulic lifting system required for smooth, residue-free unloading. • Sealing performance: Prevention of wastewater leakage and odor emission during transportation. • Budget control: Unit price strictly capped at ~RMB 120,000 (per local procurement practice). After multiple rounds of technical proposal comparison and on-site inspections, Chengli Special Purpose Vehicle Co., Ltd.’s integrated solution — Dongfeng D6 chassis + CLW5070GSSD6 superstructure — was selected. This solution fully complies with official MIIT vehicle announcements, supports nationwide registration, and offers unified chassis warranty coverage. II. Vehicle Configuration and Technical Solution Overview The delivered Dongfeng D6 blue-plate 3 m³ sludge self-dumping trucks are customized based on Chengli’s MIIT-certified model CLW5070GSSD6 (chassis model: EQ1075SJ3CDF). Key specifications are as follows: | Item | Parameter | Remarks | |------|-----------|---------| | Chassis Brand | Dongfeng (EQ1075SJ3CDF) | National VI emission standard; nationwide warranty | | Engine | Quanchai / Yuchai, 140 hp | Optimized for low-speed urban operating conditions | | Gross Vehicle Weight (GVW) | 7,360 kg | Compliant with blue-plate classification | | Body Capacity | 3 m³ | Actual payload: ~2.5–3 tons of sludge | | Dumping Mechanism | Hydraulic rear-tip | Lifting angle ≥45° | | Sealing Design | Dual sealing strips + manual hydraulic lock | Leak-proof and odor-tight | | Cab Configuration | Single-row or 1.5-row (optional) | Accommodates 2–3 occupants | | Delivery Lead Time | 7–15 days | Standard model; zero-inventory rapid dispatch | | Reference Price Range (2026) | ~RMB 100,000–120,000/unit | Tax-inclusive landed price, excluding freight | Key advantages of this solution include: High Dongfeng chassis market penetration ensuring