Project Background: Sewer Cleaning Challenges in Xilinhot City As a grassland eco-city in Inner Mongolia, Xilinhot has experienced increasingly severe sewer pipe siltation in recent years due to urban expansion and frequent extreme rainfall events. During a citywide sewer network survey conducted by the Municipal Administration Office in spring 2026—covering 12 main roads and over 30 branch roads—it was found that more than 40% of drainage pipes suffered varying degrees of silt blockage. In some aging sections, silt depth exceeded one-third of the pipe diameter, severely compromising stormwater drainage capacity during the rainy season. Traditional cleaning methods rely primarily on manual manhole entry and large-scale vacuum trucks. However, these approaches face three critical challenges: (1) many alleys in Xilinhot are too narrow for large cleaning vehicles to access; (2) manual cleaning is highly inefficient—only 50–80 meters of pipe can be cleared per day; and (3) operations require prolonged timelines and multiple rotating pieces of equipment, resulting in significant budgetary pressure. To address this, the Municipal Administration Office urgently needed to procure a fleet of highly maneuverable, excellent-ground-clearance, C-license-operable blue-plate sewer cleaning vehicles for routine maintenance and emergency cleaning of the city’s fine-grained sewer network. After extensive comparative evaluation and on-site inspections, CLW Special Purpose Vehicle Co., Ltd. was selected to supply the Dongfeng Dual-Cab Blue-Plate 3-cubic-meter Sewer Cleaning Vehicle (Model: CLW5040TQYD6). Built on the Dongfeng light-duty truck chassis, this vehicle features compact overall dimensions, a short wheelbase, and a small turning radius—enabling agile navigation through Xilinhot’s old residential neighborhoods, back alleys of commercial districts, and narrow streets, perfectly matching local operational requirements. The total project budget is capped at RMB 1.804 million, with an initial procurement plan for 10 units allocated across designated municipal zones. Leveraging its factory-direct pricing advantage, rapid local production and delivery capability from Suizhou (standard models delivered within 7–15 days), and a comprehensive after-sales service system, CLW won the public tender. This marks CLW’s 31st direct tender win in Inner Mongolia, further strengthening its brand influence in Northern China’s sanitation equipment market. Solution: Dongfeng Dual-Cab Blue-Plate 3-cubic-meter Sewer Cleaning Vehicle – Selection & Configuration To meet Xilinhot’s unique urban conditions, CLW developed a customized Dongfeng dual-cab sewer cleaning vehicle solution. Key specifications and configurations are as follows: | Item | Parameter / Configuration | Notes | |------|----------------------------|-------| | Chassis Brand | Dongfeng | National VI emission standard; nationwide warranty coverage | | Cab | Dual-cab (seats up to 5) | Enables simultaneous transport of operation personnel | | Tank Capacity | 3 m³ (blue-plate compliant) | Separate freshwater tank and wastewater tank design | | Engine | Quanchai Q23-115E60 (115 HP) | Sufficient power output with fuel-efficient performance | | Wheelbase | 2,800 mm | Small turning radius and superior maneuverability | | Gross Vehicle Weight Rating (GVWR) | 4,495 kg | Operable with Class C driver’s license | | Cleaning Method | High-pressure jetting + vacuum suction | Integrated dual-system design enabling multi-functional use | | Jetting Pressure | ≥20 MPa | Capable of breaking up hardened sediment deposits | | Suction Depth | ≥4.5 m | Meets standard manhole depth requirements | | Delivery Lead Time | 15 days (including chassis modification and superstructure commissioning) | Manufactured at CLW’s Suizhou plant | | Tax-Inclusive Landed Price | RMB 148,000 per unit | Factory-direct pricing—no intermediary markup | The vehicle utilizes an original Dongfeng chass