Government Procurement Case and Bid-Winning Solution Analysis for the Deyang Dongfeng Single-Cab Sewer Cleaning Truck (Blue License Plate, 5 m³ Capacity) In municipal sanitation, sewer cleaning trucks are core equipment for maintaining urban drainage systems—especially critical for clearing underground pipelines in old urban districts, industrial parks, and rural towns, where narrow streets and low-clearance culverts present frequent operational challenges. Recently, a municipal sanitation department in Deyang procured a batch of Dongfeng single-cab blue-plate 5 m³ sewer cleaning trucks to address local pipeline cleaning requirements. This article analyzes the procurement process based on this real-world case, focusing on chassis selection, load-bearing capacity and maneuverability, maintenance convenience, and Chengli’s recommended models. I. Case Background: Procurement Requirements of a Municipal Sanitation Department in Deyang Located in the Sichuan Basin, Deyang experiences concentrated rainfall during the rainy season, resulting in severe sediment accumulation in aging drainage networks across certain older districts. In Q2 2025, the department launched a procurement project for sewer cleaning trucks, with a budget capped at approximately RMB 402,000 (per publicly disclosed tender information), requiring vehicles to meet the following key criteria: – Blue license plate classification, operable with a Class C1 driver’s license—matching the prevailing certification level among frontline operators; – Effective tank capacity of ~5 m³, enabling coverage of 2–3 manholes per operation cycle; – High chassis maneuverability to access alleys and internal residential roadways; – Dual functionality: high-pressure jetting and vacuum suction, enabling ‘zero-discharge’ cleaning (i.e., no sludge spillage onto ground); – Full official vehicle announcement compliance, ensuring smooth registration, annual inspection, and commercial operation licensing. Ultimately, after multiple rounds of technical and commercial evaluation, the winning vehicle was the Dongfeng single-cab blue-plate 5 m³ sewer cleaning truck manufactured by Chengli Special Purpose Vehicle Co., Ltd. (reference model series: CLW5070GSSD6 derivatives), priced at approximately RMB 115,000 per unit (based on local procurement practice). A total of three units were delivered and are now operational in Deyang Economic & Technological Development Zone and Jingyang District. II. Chassis Selection: Comparative Analysis of Dongfeng, Sinotruk, Foton, and FAW Chassis Chassis selection directly impacts overall vehicle load capacity, maneuverability, and long-term operating costs. Currently dominant chassis brands include Dongfeng, Sinotruk, Foton, and FAW. The table below compares these four chassis types based on actual configurations used in Chengli’s models: | Chassis Brand | Representative Model | Engine Displacement | Wheelbase (mm) | Tire Specification | Typical Application Scenarios | Maintenance Convenience | |----------------|------------------------|------------------------|-------------------|---------------------|------------------------------|--------------------------| | Dongfeng | CLW5070GSSD6 | 2.0–2.5 L diesel | 3,308 | 7.00R16 | Urban roads, narrow alleys | Nationwide warranty network; readily available parts | | Sinotruk | HOWO Light-Duty Truck Series | 2.5–3.0 L diesel | 3,360 | 7.50R16 | Heavy-duty operations | Limited service outlets; appointment required | | Foton | Ouman Ka Series | 2.5–2.8 L diesel | 3,360 | 7.00R16 | Light-duty, highway use | Extensive service network in first-tier cities | | FAW | J6F Series | 2.5–3.0 L diesel | 3,300 | 7.50R16 | Complex road conditions | Dense service network in western China | Comparative Conclusion: – Dongfeng Chassis: Dominates