Direct OEM & Supplier Solutions for Global Road Construction & Maintenance Projects
Setting New Standards for Tack Coating Precision, Thermal Management, and Asphalt Distribution
In contemporary pavement engineering, the operational efficiency and spray uniformity of a truck mounted bitumen sprayer directly dictate the structural integrity and shear bond strength of asphalt pavement layers. Modern highway construction demands extreme precision: tack coat application rates must strictly fall within narrow micro-tolerance limits (typically 0.2 to 0.6 kg/m²) to prevent interlayer slippage, debonding, or flushing.
As a pioneer in Asian road engineering machinery, HEM Group (HME TOP Machinery) integrates decades of academic research from Chang'an University with state-of-the-art manufacturing capabilities. Our intelligent bitumen sprayers (also designated as automated asphalt distributors) are engineered to overcome core industry challenges, such as nozzle clogging, thermal segregation, unequal lateral distribution, and manual calibration errors.
Our units feature CAN-bus digital control systems coupled with radar ground-speed sensors. Even during truck acceleration or deceleration, the system dynamically adjusts the hydraulic pump speed to maintain a 100% constant spraying rate per square meter without human intervention.
Academic Rigor Combined with Global Manufacturing Resilience Since 1998
HEM Group was founded in 1998 by a distinguished panel of professors from Chang'an University—China's premier academic institution for highway transportation engineering—alongside top road construction experts. Initially operating as Xi'an Hongda Communications Technology Co., Ltd., it stands as the earliest high-tech company focusing on independent R&D and design of road machinery in China.
By 2006, our relentless breakthroughs in mechanical dynamics, engine power matching, hydraulic transmission, and digital electronic control earned us official recognition as a "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology.
In 2017, to expand our global technical exchanges and streamline supply networks, we established our dedicated export entity, HME TOP Machinery Equipment Co., Ltd., managing global sales, technical support, and international logistics.
We have cultivated an integrated, end-to-end supply chain catering to transportation infrastructure, mining operations, and municipal earthmoving:
Exploring the Core Mechanical & Electronic Systems of Our Intelligent Sprayers
Our engineered spray bars feature pneumatic computer-controlled nozzles positioned at calculated distances and angles. This configuration produces an exact triple-overlapping fan pattern, ensuring zero streaking, zero transverse variance, and flawless coverage regardless of spray height adjustments.
Equipped with high-efficiency Italian Riello automatic diesel burners and seamless thermal oil jacket circulation pipelines. Bitumen within the tank, asphalt pump, strainers, and spray bar is rapidly heated without localized charring or material degradation, allowing smooth operation even with heavy SBS modified bitumens.
To eliminate post-spray dripping that ruins freshly laid pavement borders, our sprayers incorporate high-pressure compressed air purging systems. Upon cycle completion, residual asphalt in the bar and nozzles is automatically blown back into the tank, preventing pump lock-up and nozzle clogging.
| Technical Parameter | Standard Model (6,000L - 8,000L) | Heavy-Duty Highway Model (10,000L - 14,000L) | Intelligent Precision Series (16,000L+) |
|---|---|---|---|
| Tank Capacity Range | 6,000 - 8,000 Liters | 10,000 - 14,000 Liters | 16,000 - 20,000 Liters |
| Spraying Width | 0.2m - 4.5m (Adjustable) | 0.2m - 6.0m (Telescopic) | 0.2m - 6.0m (Full Pneumatic Extension) |
| Application Rate Accuracy | ± 1.5% | ± 1.0% | ± 0.5% (Closed-Loop CAN-bus) |
| Bitumen Medium Compatibility | Emulsified Bitumen, Cutback Asphalt | Hot Bitumen, Emulsion, Rubber Bitumen | High-Viscosity SBS Modified, Asphalt Emulsion |
| Heating Method | Automatic Diesel Burner + Thermal Oil | Dual Automatic Diesel Burners + Thermal Jacket | Dual Thermal Oil Circuit + Smart Temp Control |
| Chassis Compatibility | SINOTRUK, FAW, ISUZU (4x2 / 6x4) | SINOTRUK HOWO, SHACMAN, FAW (6x4) | SHACMAN, ISUZU, Volvo, Mercedes 8x4 |
Engineered to Excel in Diverse Climatic, Geographic, and Structural Conditions
In regions such as the Central Asian steppes or high-altitude mountain passes, rapid ambient cooling causes conventional asphalt distributors to freeze in the pump lines. HME TOP sprayers integrate auxiliary thermal oil jackets along the pump head and filter block, paired with double-layer rock wool tank insulation (over 50mm thickness wrapped in stainless steel cladding). This guarantees stable spraying down to -20°C ambient temperatures.
Deployments in Southeast Asia, West Africa, and South America face extreme salt spray and moisture, which rapidly corrodes control valves and spray plumbing. Our heavy-duty models utilize anti-corrosion stainless steel spray pipes, brass nozzle assemblies, and IP67-rated waterproof electric control boxes, ensuring a design operational lifespan exceeding 10 years without structural degradation.
For high-speed expressways subjected to severe axle loads, laying modified asphalt (SBS, CRMB) requires zero non-uniform gaps. The precise triple-overlap spray mechanism delivers continuous oil membrane density, ensuring maximum inter-laminar shear strength between the sub-base, crushed stone aggregate layer, and top wearing course.
Urban road resurfacing often involves working around manhole covers, curbs, and tight radii. With independent manual hand-held spray lances and selective single-nozzle pneumatic switching controlled directly from the touch screen inside the cab, operators can perform micro-tack coating in confined city streets with zero overspray on surrounding public infrastructure.
Unrivaled Manufacturing Agility, OEM Customization, and Logistics Resilience
Our engineering division custom-fits bitumen distribution upper-structures onto all major global chassis brands including SINOTRUK HOWO, FAW Jiefang, SHACMAN, ISUZU, Dongfeng, Foton, Volvo, and Mercedes-Benz. We accommodate left-hand or right-hand drive configurations effortlessly to align with destination country road regulations.
Operating a 5000 m² modern manufacturing hub with CNC laser cutting, automated robotic welding, and hydro-testing cells, HEM Group maintains total control over build quality and costs. By sourcing high-grade steel locally and manufacturing proprietary pumps and spray bars, we offer a 30-40% total cost advantage over European competitors.
With an annual output exceeding 5000 machinery units, our logistics network provides expedited sea freight and SKD/CKD container shipping solutions. Crucial wear parts—such as nozzles, thermal seals, hydraulic valves, and sensors—are stocked standard for 24-hour dispatch, eliminating jobsite downtime.
Watch Our Intelligent Machinery Operating Across Demanding Construction Jobsites
Since our inception in 2005, HME TOP Machinery Equipment Co. Ltd has evolved into an elite engineering hub. We don't merely manufacture steel tanks; we formulate comprehensive application engineering solutions tailored to local materials, jobsite temperatures, and road design standards.
Trusted by Road Contracting Enterprises Across More Than 60 Nations
Our heavy machinery and bitumen distribution fleets are currently deployed across India, Sri Lanka, Indonesia, Malaysia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, Russia, Uzbekistan, Kenya, Ghana, and beyond, supporting major infrastructure initiatives under demanding operating conditions.
Integrated Equipment Packages for Civil Engineering, Mining, and Infrastructure Maintenance
We supply heavy-duty wheel loaders, excavators, backhoe loaders, motor graders, and bulldozers worldwide. These machines assist with site grading, bridge abutment excavating, tunnel construction, seaport development, and agricultural land clearing with absolute stability.
Complete paving workflows including Asphalt Mixing Plants, Road Milling Machines, Asphalt Pavers, Synchronized Chip Sealers, Cement Spreaders, Slurry Sealers, and Vacuum Cleaning Machines for high-standard highway creation and urban road renewal.
Mobile primary screening plants, mobile jaw crushers, and heavy-duty vibrating screens engineered to process raw quarry stone, river pebbles, and recycled construction waste directly on site, reducing aggregate transport overheads.
Ensuring Seamless Fleet Integration and Maximum Operational Uptime Worldwide
Navigating international regulatory frameworks is paramount for modern fleet operators. Our bitumen sprayers and heavy trucks are engineered to comply with strict international standards:
To eliminate delays during active paving seasons, HEM Group operates dedicated regional service networks and local spare parts hubs in target global regions:
In-Depth Technical Insights for Procurement Officers, Plant Managers, and Field Engineers
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