Sinotruk HOWO 4x2 Synchronous Chip Sealer Truck
Engineered for professional pavement preservation and surface treatment, the Sinotruk HOWO 4x2 Synchronous Chip Sealer is a high-precision road maintenance vehicle designed for simultaneous spraying of asphalt binder and spreading of aggregate chips. This synchronous technology ensures optimal adhesion between asphalt and aggregate, significantly improving pavement durability, surface texture, and skid resistance. Built on the reliable HOWO 4x2 chassis, this vehicle is ideal for highway maintenance, asphalt overlay, bridge deck waterproofing, and rural road construction.
Sinotruk HOWO 4x2 Synchronous Chip Sealer Truck
The Sinotruk HOWO Synchronous Chip Sealer is a professional-grade pavement preservation vehicle that integrates asphalt spraying and aggregate spreading into a single, synchronized operation. Unlike traditional methods that apply asphalt and aggregate separately, this synchronous technology ensures that aggregate chips are embedded into the asphalt binder immediately after spraying, creating a strong mechanical bond that resists raveling, delamination, and moisture damage. Built on the proven HOWO 4×2 chassis with a powerful diesel engine, this vehicle features a high-capacity asphalt tank, a hydraulically driven aggregate hopper, a precision spreading auger, and an advanced control system for uniform application. This vehicle is widely used for chip seal, slurry seal, micro-surfacing, and tack coat applications on highways, urban roads, bridges, and airport runways.
Key Features:
· Sinotruk HOWO 4×2 Reliable Chassis: Built on the proven HOWO platform with excellent stability and load-carrying capacity. Powerful diesel engine provides ample power for both highway travel and PTO-driven hydraulic systems.
· Synchronous Asphalt & Aggregate Spreading: Simultaneous spraying of asphalt binder and spreading of aggregate chips ensures immediate embedment and optimal adhesion. Eliminates the need for separate applications, saving time and improving bond quality.
· High-Capacity Asphalt Tank: Large-capacity insulated asphalt tank with efficient heating system maintains optimal asphalt temperature for proper flow and adhesion. Adjustable spray bar with multiple individually controlled nozzles ensures uniform transverse distribution.
· Precision Aggregate Hopper & Spreader: Hydraulically driven aggregate hopper with variable-speed conveyor belt and wide spreading auger provides uniform aggregate coverage across the working width. Adjustable spread rate for different aggregate sizes and application requirements.
· Advanced Control System: PLC-based automatic control system with touchscreen interface allows operators to precisely adjust asphalt spray rate and aggregate spread rate. Real-time monitoring of application parameters ensures consistent quality.
· Hydraulic Power System: Reliable hydraulic system powers all critical functions including asphalt pump, aggregate conveyor, spreading auger, and hopper lift. Smooth, proportional controls for precise operation.
· Heating & Insulation System: Efficient diesel burner heating system with automatic temperature control maintains asphalt temperature within optimal range. High-density insulation minimizes heat loss and reduces fuel consumption.
· Operator-Friendly Design: In-cab and rear platform dual control stations provide operational flexibility. Clear visibility of spray and spread areas for precise application control.
Application:
· Highway chip seal and pavement preservation
· Asphalt overlay tack coat application
· Bridge deck waterproofing membrane application
· Rural road surface treatment
· Airport runway friction course application
· Parking lot and industrial pavement sealing
Product Specification
| Name | Model, Specifications | Belonging System | Remark |
| car chassis | ZZ1257V5847F1 | chassis | Sinotruk Howo cab |
| engine | MC09.3 5 -60 | Sinotruk 350 horsepower, China VI emission standard | |
| Asphalt tank capacity | 8 cubic meters (8,000L ) | Asphalt tank + stone silo | Inner tank volume |
| Stone silo | 12 cubic meters | Internal Lift | |
| Insulation layer thickness | 50 mm | Rock wool insulation | |
| Stainless steel outer casing | 1mm | 1 thick stainless steel plate | |
| power take-off | Full- power power take-off | Source of motivation for work | Spraying can start from zero |
| Triple gear pump | CPC4-50-20-16 | Hydraulic system | Tianjin |
| proportional valve | EFBG-03-160-HF | Taiwan | |
| Asphalt pump motor | 05-130 – BD31 | Ningbo Hanzhu | |
| Asphalt pump | QGB 950 | asphalt | 950 L/min |
| Number of nozzles | 32 | Spraying system | The control method is: 1 control 1 |
| burner | G20 (200,000 kcal/hour) | Heating system | Two Riello diesel burners |
| Thermal oil pump | RY 25-25-160 | Hebei | |
| Thermal oil pump motor | 380V-2.2KW-2 poles | Lu’an, Anhui | |
| Stone spreading method | Gravity flow | Stone chip spreading system | 16-way material gate (computer controlled) |
| Control system method | Cab touchscreen computer control + rear work platform control (backup) | control system | The control system adopts Siemens modular design, resulting in faster and smoother operation and a lower failure rate. |
| speed sensor | Ni5-G12 | Trke, Germany | |
| Temperature controller | WZP-230 | Shanghai Xinghui | |
| dynamo | 5.5 KW Honda gasoline generator | Power System | joint venture |
Sinotruk HOWO 4x2 Synchronous Chip Sealer Truck







- +86 199 4767 5585
- [email protected]
- Industry Park, Suizhou City,Hubei Province, China
Company Profile
Aout TWL
HUBEI TWL SPECIAL VEHICLE CO., LTD (hereinafter referred to as TWL), one of important member of CLW Group, is located in Suizhou City, Hubei Province, the capital of China’s Special Vehicles. TWL Truck has a first-class management, design, R&D, manufacturing, and sales professional team, as well as “special, new, high and sophisticated” facilities and equipment, complete manufacturing technology, and strict testing methods to ensure the production of high-quality and high-value-added products for the market. At present, we has strategic partnership with a number of well-known Chinese truck brand, including Dongfeng, Sinotruk, FAW, Foton, Shacman, ISUZU, JAC, JMC, Kama, etc. TWL Truck always adheres to the corporate philosophy of “people-oriented, customer-oriented, honesty and win-win”, and adheres to the business tenet of “development by innovation, survival by quality; integrity by service, and market by brand”.
After-Sales Service
Warranty
– The buyers can get a minimum warranty period of 12 months or 25000KM-50000KM, whichever comes first from the arrival date of shipment.
– During this period, we will send replacement parts and components to buyers by DHL, UPS, FEDEX or by air and by sea free of charge, easy-wearing spare parts are excluded.
– After warranty time, buyers can get all of spare parts of their truck at factory cost.
– This warranty does not cover any possible damage due to improper operaton, accident or misuse or damage due to any unauthorized services.
Technical Support
– The buyers can forever enioy technical support anytime and anywhere, overseas technical training before operaton is available at buyers cost or our cost.
Daily Mainteance Suggestion
– We strongly sugest you to buy some amount of basic spare pats along with your truck, the cost will be approximately 500 USD-800 USD/unit, no shipping cost.
