In the modern civil infrastructure and highway maintenance sector, procuring reliable, high-performance bituminous distribution equipment represents a major capital allocation. As municipal authorities, private contractors, and global infrastructure consortiums seek to optimize Total Cost of Ownership (TCO) while upholding rigorous engineering specifications, the international procurement market for high-quality second-hand tar sprayers and re-engineered bitumen distributors has experienced significant structural expansion.
A tar sprayer (or bitumen distributor) is not merely a transport tank with a pump; it is a high-precision thermodynamic and fluid dynamics system designed to deliver precise asphalt emulsion, cutback bitumen, or modified binder application rates (measured in kg/m²) across variable paving widths under challenging ambient conditions. Buying pre-owned machinery directly from certified manufacturers and factory overhaul specialists ensures that key sub-assemblies—such as thermal oil heating circuits, proportional hydraulic pumps, pneumatic spray bar actuators, and automated CAN-bus metering units—are completely recertified to original OEM tolerances.
HEM Group was founded in 1998 by a distinguished panel of professors from Chang'an University—China's premier institution for highway engineering and heavy construction equipment R&D. Originally established as Xi'an Hongda Communications Technology Co., Ltd., HEM Group stands as the earliest high-tech enterprise dedicated to independent design and engineering of road construction machinery in China.
Over more than two decades, our research directives have yielded groundbreaking national invention patents and technological milestones in mechanical dynamics, engine power matching, hydraulic transmission integration, and digital electronic control systems. Recognized in 2006 as a official "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology, our engineering directives strictly bridge theoretical mechanical physics with real-world pavement construction requirements.
In 2017, to streamline international technical exchanges and supply chain transparency, the group founded its dedicated export arm, HME TOP Machinery Equipment Co., Ltd. This division directly coordinates global equipment sales, OEM customizations, international shipping clearance, and lifetime after-sales field support.
Operating from a state-of-the-art 5,000 m² modern production facility with an annual output capacity exceeding 5,000 sets, our production lines deliver an integrated single-source portfolio encompassing road milling machines, intelligent bitumen distributors, synchronous chip sealers, slurry seal pavers, road wideners, excavators, mobile crushers, and asphalt mixing plants.
The global demand for used and factory-certified second-hand tar sprayers is driven by distinct economic and logistical parameters across emerging and developed markets. Road development agencies and private engineering procurement construction (EPC) contractors face accelerating pressure to widen rural arterial networks, maintain municipal highways, and execute preventive maintenance programs within tightened municipal budgets.
Across Sub-Saharan Africa (e.g., Nigeria, Kenya, Ghana, Mozambique, Congo, Eritrea) and South America (e.g., Bolivia), government road funds prioritize extensive gravel-to-asphalt upgrades and chip-sealing maintenance. Procurement officers frequently seek heavy-duty, mechanically robust second-hand tar sprayers equipped with simple thermal diesel burners and direct mechanical pump linkages that tolerate variable fuel qualities and demanding field maintenance conditions.
In markets like India, Sri Lanka, Indonesia, and Malaysia, high rainfall and dense heavy vehicle traffic accelerate asphalt fatigue, creating massive demand for micro-surfacing, slurry sealing, and rapid tack-coat spraying. Contractors in these regions demand second-hand units retrofitted with micro-computerized radar velocity trackers and computer-controlled spray bars to conform to strict national highway authority specifications.
Mining and heavy haulage transport corridors in Australia, Fiji, Uzbekistan, and Russia require heavy chassis-mounted bitumen distributors and aggregate chip spreaders capable of applying heavy polymer-modified bitumen (PMB). Refurbished heavy-duty truck chassis (4x2, 6x4, or 8x4 configurations) with high-capacity insulated tanks (8,000L to 16,000L) represent the sweet spot for procurement ROI.
A truly "High-Quality" second-hand tar sprayer must undergo an exhaustive engineering refurbishment process. Unlike conventional used vehicle brokers, direct equipment factories evaluate and restore three critical subsystems: Thermal Transfer Systems, Fluid Metering Dynamics, and Pneumatic/Hydraulic Automation.
Bitumen materials must be maintained between 140°C and 180°C to achieve optimal viscosity for spraying. Pre-owned tanks are subjected to ultrasonic thickness testing to verify structural integrity against corrosion. Heating flue pipes are thoroughly cleared of carbon coking, and high-efficiency diesel burners (Riello/Baltur standards) are calibrated. Heat-transfer oil channels are pressure-tested at 1.5x working pressure to prevent thermal fluid leakage into the bitumen emulsion chamber.
Precision spraying depends entirely on constant pump output matched to truck ground speed. Second-hand asphalt pumps undergo complete disassembly, gear tolerance clearance checks, and mechanical seal replacements. The hydraulic drive motor is coupled with proportional control valves linked to non-contact radar ground speed sensors, ensuring uniform spray density regardless of vehicle velocity fluctuations.
Established engineering heritage stemming from Chang'an University highway research experts, maintaining direct manufacturing precision.
Full technical advisory covering bituminous material chemistry, aggregate blending, and asphalt emulsion application techniques.
Bespoke product modifications including special tank capacities, dual-burner configurations, and specialized chassis mounting.
Continuous online customer assistance combined with rapid on-site technician deployment and machine operator training.
Localized spare parts stock and technical support network across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka.
Complete chain of road maintenance equipment, earthmoving loaders, excavators, and aggregate crushing plants under one roof.
Our dedicated export engineering team manages all international trade logistics including multi-modal freight transport, custom export documentation, port clearance, and structural marine tie-down protocols. Customer satisfaction is our highest priority, backed by regional spare parts hubs ensuring minimum job-site downtime.
Complete equipment supply lines for asphalt mixing plants, pavers, intelligent bitumen distributors, road milling machinery, chip sealers, and micro-surfacing pavers. Supporting bridge deck waterproofing, municipal resurfacing, airport runway paving, and rural road revitalization projects worldwide.
Integrated wheel loaders, hydraulic excavators, backhoe loaders, motor graders, and specialized walking excavators ("Iron Spider-Man"). Engineered for site preparation, foundation trenching, emergency rescue operations, and commercial real estate development.
Heavy-duty mobile primary screening units, mobile jaw crushers, and roller crushers configured for quarrying operations, aggregate sizing, construction waste recycling, and open-pit mineral extraction environments.
HME Machinery
