Explore our flagship heavy machinery, engineered with Chang'an University academic expertise for extreme climate performance and maximum ROI.
Comprehensive guide to thermal dynamics, polymer-modified sealants, and mechanical application systems in preventive highway maintenance.
Modern asphalt crack filler machines utilize dual-wall kettle designs with Heat Transfer Oil (HTO) jackets. This indirect heating mechanism prevents localized sealant charring, maintaining polymer viscosity and elasticity across ASTM D6690 standard hot-pour sealants.
Featuring 24V low-voltage internal resistance heating elements inside the discharge wand hose. Eliminates cold-material blockages during operation, guaranteeing continuous sealant flow rate and constant 185°C–200°C application temperature.
Dual digital LED controllers continuously monitor both thermal oil and sealant temperatures. Automatic Italian Riello diesel burner modulation prevents material thermal degradation and minimizes fuel consumption up to 22% per operational shift.
HEM Group was founded in 1998 by a distinguished group of professors from Chang'an University—China's premiere academic institute for highway engineering—and leading experts in the road building industry. Originally established as Xi'an Hongda Communications Technology Co., Ltd., it stands as the earliest high-tech enterprise dedicated to independent R&D and design of road construction and maintenance machinery in China.
Recognized as a certified "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology in 2006, our breakthroughs span mechanical dynamics, engine power matching, hydraulic transmission technology, and digital electronic control systems.
In 2017, HME TOP Machinery Equipment Co., Ltd. was established to handle global exports, technical support, on-site commissioning, and international supply chain distribution.
How intelligent sensors, green electrification, and automated crack identification are redefining road maintenance economics worldwide.
The integration of high-resolution LiDAR and optical cameras on modern road survey vehicles allows real-time crack depth mapping. Next-generation crack filler units feature synchronised data links with routing machines, optimizing sealant usage based on exact crack void volume rather than manual estimation.
To meet stringent urban noise and exhaust emission targets in Europe and North America, hybrid diesel-electric and 100% lithium-ion battery-powered melting systems are entering municipal fleets. Electric heating elements reduce urban operating noise below 60 dB while eliminating on-site CO2 emissions.
| Specification Feature | Standard Direct-Fired Equipment | HME Indirect HTO Thermal System | Contractor Operational Advantage |
|---|---|---|---|
| Heating Method | Direct Flame to Kettle Floor | Dual-Wall Heat Transfer Oil (HTO) Jacket | Eliminates hot spots; prevents bitumen thermal cracking. |
| Burner Control | Manual On/Off Valve | Automated Digital PID & Riello Diesel Burner | Saves 18–25% fuel; maintains exact setpoint temperature. |
| Hose Dispensing | Unheated Gravity Flow Wand | 24V Internal Resistance Heated Electric Hose | Zero hose clogging; instant start in -10°C ambient temperatures. |
| Sealant Agitation | Manual Crank Handle | Hydraulic Forward/Reverse Variable Speed Agitator | Homogeneous mixing of rubberized polymer modified asphalt. |
| Pumping Mechanism | External Hand Pump | Submerged Mechanical Bitumen Gear Pump | Self-priming, long service life, no cold pump jams. |
Tailored preventive maintenance methodologies designed for distinct climate challenges, traffic loads, and municipal asset management targets.
Continuous dynamic traffic loads demand high-elasticity rubberized asphalt sealants (ASTM D6690 Type II/III). HME truck-mounted high-capacity (500L–1000L) crack sealers provide rapid linear sealing speeds up to 30 meters per minute to minimize lane-closure durations.
Airport pavements require zero FOD (Foreign Object Debris) tolerance. Sealed cracks must feature flush surface profiles with extreme fuel and jet-blast resistance. Our precision flow-control wands ensure smooth, level reservoir filling compliant with FAA guidelines.
In regions experiencing severe sub-zero temperatures (Northern Europe, Canada, Russia), thermal contraction cracks expand rapidly. HME equipment integrates high-pressure hot-air lance preheating to dry moisture and purge debris before sealant injection.
Combining rigorous academic design with advanced robotic assembly to deliver uncompromised quality and price-to-performance efficiency.
High-precision CNC laser cutting of structural steel chassis combined with automated robotic arc welding ensures structural integrity, leak-proof thermal oil jackets, and long chassis operational fatigue life.
From trailer hitch configurations (ball or pintle ring) to custom engine brands (Kubota, Honda, Kohler, Yanmar) and specialized tank capacities (100L to 1000L), we build tailored units matching precise contractor requirements.
Every crack sealer undergoes thermal cycle hydraulic pressure testing, electrical system continuity audits, and burner ignition calibrations prior to export packaging to ensure plug-and-play field deployment.
Strategic breakdown of Capex vs Opex savings achieved through high-efficiency Chinese engineering and factory-direct support.
Procuring crack filler machines directly from HME TOP Machinery provides a 35%–50% cost advantage compared to European or North American OEMs without compromising critical component quality. We integrate premium international components including Riello burners, Honda/Kubota engines, and Danfoss hydraulic drives, securing high asset residual value.
Through optimized thermal insulation (high-density ceramic wool jackets) and fast-melt dual agitation design, HME equipment melts cold sealant blocks 30% faster than industry averages. Reduced melt time saves 1.5 operator hours per day and cuts daily diesel burner fuel consumption significantly.
Comprehensive export documentation, international certification compliance, and worldwide technical assistance networks.
All export machinery complies with European CE safety standards, ISO9001 quality management systems, and EPA Tier 4 Final / Stage V engine emissions regulations, ensuring smooth customs clearance across North America, the EU, and Australia.
Our dedicated export department handles complete documentation including Certificates of Origin (Form E, Form F, CO), Bills of Lading, custom clearance support, and seaworthy containerized/RORO shipping packaging.
With local service partners and technical teams established across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka, we provide rapid spare parts delivery and on-site engineering training.
Direct answers to crucial operational, engineering, and purchasing queries for municipal contractors and distributors.
Comprehensive OEM factory solutions for heavy civil engineering, aggregate processing, and road rehabilitation.
HME Machinery
