Direct from China's OEM Manufacturing Base - High-Precision Asphalt & Compaction Technology
Combining Chang'an University Research Excellence with Global Machinery Manufacturing
Founded in 1998 as Xi'an Hongda Communications Technology Co., Ltd. by a distinguished team of professors from Chang'an University—China's premier academic institute for highway engineering and heavy machinery design—the HEM Group represents over a quarter-century of pioneering technical innovation. Recognized officially as a Shaanxi Provincial High-Tech Enterprise in 2006, our research group has consistently led advancements in mechanical dynamics, engine power matching, hydraulic transmission systems, and digital electronic metering.
To streamline global distribution and provide dedicated overseas engineering support, HME TOP Machinery Equipment Co., Ltd. was established in 2017 as the dedicated export arm. Today, our manufacturing ecosystem spans a modern 5,000 m² production facility delivering over 5,000 units annually to clients across more than 60 countries and territories.
Technical Deep Dive into Thermal Fluid Circulation, Flow Precision, and Automatic Heating Systems
Integrated heat-exchanger systems powered by automated diesel burners ensure uniform asphalt heating. Thermal oil jackets surrounding the bitumen pump, valves, and spray bar prevent localized overheating and clogging, maintaining optimal working viscosity between 160°C and 180°C.
Equipped with high-precision positive displacement gear pumps and micro-controller PWM pulse valves, our sprayers link vehicle travel speed directly to spray volume. This guarantees an ultra-precise application rate with a distribution variance of less than ±1.5% under varying truck speeds.
Fully customizable tri-fold spray bars equipped with individual pneumatic nozzle controls allow operators to adjust spray width on the fly. The specialized fan-shaped nozzle geometry achieves perfect triple-overlap coverage without streak formation or shadow zones.
Unlike standard emulsion distributors, OEM Hot Bitumen Sprayers engineered by HEM Group utilize specialized cast-alloy internal gear pumps with zero-clearance thermal expansion sleeves. This enables seamless switching between straight paving-grade asphalt (e.g., Pen 60/70, Pen 80/100), SBS polymer-modified bitumen (PMA), and crumb rubber asphalt without risk of pump seizure or thermal degradation.
Custom-Engineered Solutions for Extreme Climates, High-Traffic Arterials, and Specialized Pavements
Operating in regions such as Central Asia and the Andes mountains presents steep gradients and rapid ambient temperature drops. HEM Hot Bitumen Sprayers feature auxiliary tank pre-heating jackets and high-output burners capable of raising binder temperatures rapidly even under low atmospheric pressure conditions, ensuring immediate tack-coat adhesion during sub-zero emergency repairs.
In Southeast Asian and Equatorial African environments, humidity often leads to moisture entrapment under asphalt layers. Our machinery utilizes high-pressure pneumatic blowing routines that purge lines in seconds and combine hot binder applications with micro-fine fog seal coats, ensuring rapid curing and preventing striping on heavy-load highways.
Metropolitan paving projects require strict noise mitigation and zero-downtime execution. HEM's intelligent sprayers feature whisper-quiet hydraulic drives, automated full-width cleaning cycles using pneumatic high-pressure air flushing, and touch-screen cab controls that allow single-operator execution during tight night shifts.
Airports and port terminals demand high-shear SBS modified bitumens applied at heavy application rates (up to 2.5 kg/m²). Our heavy-duty spraying platforms maintain precise binder pressure across spray bars up to 6 meters wide, delivering uniform stress-absorbing membrane interlayers (SAMI).
Vertical Integration, Standardized Modular Manufacturing, and Cost Efficiency
We provide OEM and ODM engineering tailor-made to partner specifications. Tank capacities ranging from 3,000 to 16,000 Liters can be integrated seamlessly onto global commercial chassis brands including FAW, Dongfeng, Sinotruk, ISUZU, MAN, and Volvo.
Situated within China's key industrial machinery cluster in Xi'an and supported by established supply chains, our factory ensures rapid procurement of premium hydraulic components (such as Parker, Rexroth, and Eaton) with zero bottleneck delays.
Every unit undergoes strict hydrostatic pressure testing, thermal insulation efficiency verification, computer calibration of spray bar flow rates, and electronic diagnostic burn-in before export clearance.
Transitioning from Manual Bitumen Heating Tanks to Fully Automated Smart Maintenance Fleets
The global road infrastructure sector is undergoing a major transition. Government transport authorities across Latin America, Africa, Southeast Asia, and Eastern Europe are rapidly moving away from manually operated distributor tanks in favor of intelligent hot bitumen sprayers and synchronized chip sealers. This transition is driven by stricter quality mandates for highway durability and asphalt inter-layer bond strength.
Our machinery directly supports large-scale infrastructure investments, including Belt & Road corridors, Public-Private Partnership (PPP) tollways, and municipal urban renewal programs. By offering lower total cost of ownership (TCO) paired with Western-equivalent flow accuracy, HEM Group enables civil contractors to achieve high profitability per lane-kilometer paved.
Our heavy road machinery and specialized bitumen sprayers are actively operating across diverse global markets, including:
Asia & Oceania: India, Sri Lanka, Indonesia, Fiji, Australia
Africa: Nigeria, South Africa, Eritrea, Mozambique, Congo, Ghana, Kenya
Americas & Eurasia: Bolivia, Uzbekistan, Russia, and beyond.
Innovating Next-Generation Smart Paving, Telematics Integration, and Zero-Carbon Heating
Integration of 5G telemetry modules allowing real-time cloud tracking of binder temperatures, total liters sprayed, and precise GPS mapping of application rates per square meter for quality auditing.
Development of dual-fuel burners and electric induction heating coils capable of maintaining binder storage temperature during transit via chassis battery packs, cutting emissions by up to 35%.
Real-time machine vision sensors installed on the rear spray bar that inspect transverse binder coverage and automatically adjust individual nozzle pressure to eliminate streaks instantly.
24/7 Technical Support, Regional Parts Depots, and On-Site Engineering Training
At HME TOP Machinery Equipment Co., Ltd., equipment supply is backed by comprehensive long-term operational support. We maintain localized distribution networks and service engineering teams across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka.
Collaborating with top international infrastructure contractors and equipment dealers worldwide.
Technical and OEM Procurement Inquiries for Bitumen Distribution Machinery
Demonstrating High-Performance Asphalt Distribution & Paving Operations
Explore Our Comprehensive Line of Bituminous Sprayers, Pavers, and Chip Sealers
HME Machinery
