A customer in Genhe City required a specialized vehicle capable of navigating urban streets with agility while delivering high-efficiency sludge removal. Following on-site investigation and precise requirement alignment, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as “Chengli”) customized a Dongfeng dual-cab, blue-plate, 3-cubic-meter sludge removal truck specifically for this application. This solution directly addressed the customer’s core requirements: C-license operability, compact size with large capacity, and outstanding cost-effectiveness. This article provides a detailed analysis of the successful case across four dimensions: project background, solution design, implementation results, and lessons learned. Project Background Genhe City lies in a high-latitude, frigid region where urban drainage systems frequently become clogged with sludge due to winter ice formation and spring snowmelt. Conventional large-scale sludge removal vehicles are too bulky to access narrow city streets, and their operation requires a Class B (or higher) driver’s license—increasing labor costs. The customer urgently needed a vehicle that met the following criteria: - C-license operable: A blue-plate vehicle drivable with a standard C1 license, lowering recruitment barriers for drivers; - Moderate capacity: A 3-cubic-meter tank sufficient for routine sludge removal without underutilizing transport capacity; - Dual-row cab: Accommodating 4–5 crew members to enhance team coordination and operational efficiency; - Cold-climate adaptation: Chassis and superstructure engineered to withstand temperatures as low as –30°C, ensuring reliable cold-start performance. After comprehensive evaluation, the customer selected Chengli as its supplier—primarily due to Chengli’s full compliance with MIIT (Ministry of Industry and Information Technology) vehicle announcements, its capability to deliver end-to-end customization, use of genuine Dongfeng chassis with nationwide warranty coverage, and lifetime after-sales support for the superstructure. Solution Design Based on the specific needs of Genhe City, Chengli’s engineering team developed a blue-plate, 3-cubic-meter sludge removal truck built upon a Dongfeng chassis. Key specifications are as follows: | Item | Parameter/Configuration | Description | |------|--------------------------|-------------| | Chassis Brand | Dongfeng | Genuine Dongfeng chassis with nationwide warranty; readily available spare parts | | Emission Standard | China VI | Complies with latest national environmental regulations; eligible for registration nationwide | | Cab Configuration | Dual-row, rated for 5 occupants | Accommodates 4–5 field personnel | | Tank Capacity | 3 m³ | Maximum legal capacity for blue-plate vehicles; ideal for daily sludge removal tasks | | Sludge Removal Method | Hydraulic tipping + vacuum suction pump | Combines suction and discharge capabilities for maximum efficiency | | Vacuum Pump Type | Water-ring vacuum pump | Suction depth ≥ 8 m; long suction range | | Maximum Suction Depth | 8 m | Suitable for deep wells and pits | | Tank Material | Q235 carbon steel, 4 mm thickness | Corrosion-resistant and wear-resistant | | Freeze Protection | Insulated tank + chassis pre-heating system | Fully adapted to –30°C operating environments | | License Plate Type | Blue plate | Operable with C1 license; unrestricted in urban areas | | Overall Dimensions | 5995 × 1980 × 2500 mm | Compact footprint enables agile maneuvering in narrow streets | | Gross Vehicle Weight | 4495 kg | Within blue-plate regulatory limit; fully compliant | | Price Range | ¥95,000–¥120,000 (tax-inclusive, delivered price) | Aligned with Chengli’s 2026 blue-plate 3-m³ vacuum tanker pricing; custom sludge removal variant priced comparably | Core Advantages of This Solution: - Factory-direct sales, no intermediaries: Chengli manufactures and sells directly—delivering savings of ¥8,000–¥15,000 versus equivalent co