Direct factory supply of heavy industrial pavers, bitumen sprayers, recyclers, and aggregate crushers.
HEM Group was founded in 1998 by a distinguished panel of professors from Chang'an University—Asia's premier institution for highway engineering—and leading experts in the road building industry. Originally established as Xi'an Hongda Communications Technology Co., Ltd., HEM represents the earliest high-tech enterprise dedicated to the independent research, thermodynamic design, and mechanical manufacturing of road construction equipment in China.
Guided by high-tech R&D to forge an international Chinese engineering brand, HEM Group specializes in high-end maintenance machinery. Our R&D team holds a vast portfolio of invention patents spanning mechanical dynamics, engine power matching, hydraulic transmission, and digital electronic control systems. In 2006, the Shaanxi Provincial Department of Science and Technology officially accredited the group as a national "High-tech Enterprise".
"To accelerate global cooperation, we established HME TOP Machinery Equipment Co., Ltd. in 2017—our dedicated international trade and technical support division providing seamless end-to-end service across 60+ countries."
Analyzing thermal stability, atomization pressure dynamics, and application precision in small-to-medium asphalt maintenance.
Modern bitumen hand sprayers rely on diesel burners or liquefied petroleum gas (LPG) burners paired with automated ignition. Our units utilize thermal-oil jacketing or direct burner tubes designed to heat liquid asphalt, modified bitumen, or emulsified asphalt up to operating temperatures of 160°C – 180°C without localized carbonization or bitumen degradation.
Equipped with high-precision heat-resistant asphalt gear pumps driven by reliable Honda or Briggs & Stratton gas engines. The internal pump architecture maintains constant hydraulic displacement (0.3 – 0.8 MPa operating pressure), preventing pressure drops during manual wand maneuvering and eliminating spray pattern distortion.
Featuring lightweight alloy spray lances with heat-insulated grip zones, anti-drip shut-off valves, and interchangeable fan-jet spray tips. Engineers can adjust spray bar width and fluid discharge rate to achieve precise tack coat coverage ranging from 0.3 kg/m² to 1.5 kg/m² with zero overlap streak defects.
Comparative technical metrics evaluating hand-operated bitumen sprayers against trailer-mounted and truck-mounted units.
| Technical Parameter | Hand-Held Portable Unit | Trailer-Mounted Hand Sprayer | Truck-Mounted Automated Distributor |
|---|---|---|---|
| Tank Capacity Range | 100 L – 300 L | 500 L – 2,000 L | 4,000 L – 16,000 L |
| Heating Mechanism | Direct LPG / Small Diesel Burner | Automatic Italian Riello Burner | Dual Thermal Oil Circulation Burners |
| Spray Rate Accuracy | ± 4.5% (Manual Control) | ± 2.5% (Flow Metered) | ± 1.0% (Computerized Radar Synchro) |
| Pumping Unit | Internal Gear Pump (5.5 HP Gas Engine) | Heavy-Duty Bitumen Pump (9 HP Diesel) | Proportional Hydraulic Drive Pump |
| Primary Application | Pothole repair, curb sealing, tight corners | Community roads, patch repair, trenching | Highways, airport runways, major paving |
How hand bitumen sprayers solve micro-construction challenges across varied civil engineering landscapes.
When utility repairs cut trenches across asphalt pavements, large distributor trucks cannot maneuver effectively. A portable bitumen hand sprayer allows civil crews to quickly apply a thin, uniform emulsified asphalt tack coat to vertical cut faces and horizontal sub-bases, ensuring strong bonding between old asphalt and newly placed hot mix.
Bridge abutments, expansion joints, and concrete parapet bases demand rigorous waterproofing prior to wearing course placement. The hand spray wand provides pin-point control to coat complex geometry, box culverts, and structural interfaces without overspraying onto steel reinforcements or expansion rubber seals.
In rural road maintenance, pavement edge breakdown is the primary cause of road deterioration. Hand-operated sprayers enable localized chip sealing edge repairs, spraying binder along narrow shoulders where heavy machinery would crush soft roadside soil or block opposing traffic lanes.
China’s road equipment industrial clusters offer unmatched component availability, precision CNC manufacturing, and cost-to-performance ratios. At HME TOP Machinery, our integrated factory workflow delivers key structural advantages:
Rapid urbanization and expanding highway networks across developing markets drive demand for compact, cost-effective bitumen spraying units.
High rainfall and intense tropical thermal cycling cause frequent asphalt erosion. Contractors in nations such as Indonesia, Malaysia, India, and Sri Lanka heavily utilize portable hand bitumen sprayers for rapid pothole patching and preventive tack coating before seasonal monsoons.
National road agencies in Nigeria, Kenya, Ghana, South Africa, and Mozambique are expanding rural feeder road networks. Hand-operated sprayers represent an entry-level capital asset that allows local contractors to build high-quality bitumen surface treated (BST) roads at a fraction of full-scale paver costs.
Municipal maintenance departments in Eastern Europe and South America rely on low-emission, highly maneuverable trailer-mounted spray units for urban alley maintenance, bike path paving, and industrial park asphalt maintenance.
The evolution of hand bitumen spraying toward intelligent electronic metering, low-carbon heating, and eco-emulsion compatibility.
Integration of micro-flow sensors and Bluetooth hand-wand displays giving operators real-time feedback on binder discharge (kg/m²), preventing over-application.
Replacing traditional fossil-fuel burners with high-density lithium-ion induction thermal jackets, enabling zero direct exhaust during urban night-shift repairs.
Optimized internal pump seal metallurgy designed to handle plant-derived bio-binders and high-viscosity Crumb Rubber Modified Bitumen (CRMB).
One-touch pneumatic blowout valves that clean residual asphalt out of the wand and nozzle within 30 seconds using compressed air, eliminating manual solvent flushes.
Comprehensive international assistance ensuring seamless regulatory compliance, operator safety, and zero project downtime.
All HME TOP Machinery road construction equipment complies with stringent international quality frameworks, including ISO9001 Quality Management Systems and European CE Conformity Directives for pressure vessels, noise emissions, and machine safety. Our engineering documentation includes complete material test reports, pressure vessel certificates, and localized electrical wiring schematics.
We maintain regional distribution centers and dedicated technical support teams across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka. Our expert engineers provide round-the-clock remote troubleshooting, on-site operational training, customs documentation support, and swift spare part dispatch to ensure maximum uptime.
Experience the operational efficiency and precise bitumen distribution engineered into every piece of HEM Group machinery. Exported to over 60 countries including India, Sri Lanka, Indonesia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, and beyond.
Partnering with global highway authorities, municipal contractors, and mining consortia worldwide.
Expert engineering answers to common technical, procurement, and maintenance questions.
HEM hand sprayers are designed to handle emulsified asphalt (rapid-setting and slow-setting), cutback asphalt, hot refined bitumen, and polymer-modified asphalt. Hot bitumens require units equipped with diesel/LPG heating burners, while cold asphalt emulsions can be sprayed using standard unheated portable units.
Our units feature a dual-cleaning architecture. After operations, operators switch a 3-way valve to reverse-draw remaining bitumen back into the tank, followed by a diesel or compressed-air flush through the wand and nozzle array, eliminating residual cooling build-up.
Standard model hand sprayers are maintained in stock for immediate shipment. Custom OEM units (specific tank sizes, engine brands, trailer chassis modifications) typical carry a manufacturing lead time of 10 to 20 days depending on final engineering specifications.
We provide a 12-month full machine warranty on all exports. Spare parts are dispatched via priority express (DHL/FedEx) within 24 hours, and overseas customers can access direct engineering assistance from our regional service teams in Africa, Southeast Asia, and Eastern Europe.
Explore our complete manufacturing ecosystem for highway engineering and mining aggregates.
HME Machinery
