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In modern civil engineering and highway preservation, the demand for precision, low-footprint bitumen application equipment has grown exponentially. Sourcing a dependable OEM Small Tar Sprayers Supplier is no longer merely a purchasing decision; it is a strategic requirement for contractors, municipal authorities, and road repair fleets striving to minimize material waste, optimize thermal efficiency, and guarantee strict compliance with environmental regulations.
Small tar sprayers—frequently referred to as mini bitumen distributors, portable tack coat sprayers, or compact asphalt emulsion sprayers—bridge the critical operational gap between large-scale highway distributors and manual hand-pouring methods. They are predominantly utilized for tack coat spraying before asphalt overlay, crack sealing prep, pothole repair, utility trench reinstatement, parking lot maintenance, and shoulder widening projects.
Ensures exact volumetric distribution of emulsified asphalt (RS-1, SS-1h) to create optimal shear strength between old pavement layers and new hot-mix asphalt overlays.
Engineered with compact wheelbases or trailer/skid mount configurations, allowing effortless maneuvering in tight urban alleys, residential zones, and bridge decks.
Equipped with thermal-oil circulation or diesel burner heating combined with positive displacement gear pumps to handle modified bitumens without clogging.
As a technology-first manufacturer originating from partnerships with Chang'an University researchers, HEM Group (HME TOP Machinery) integrates advanced mechanical dynamics, fluid mechanics, and digital electronic control systems into every small tar sprayer unit.
The core structural design emphasizes thermal insulation, precise discharge metering, and operator safety. Below is an engineering breakdown of our standardized OEM small tar sprayer series:
| Specification Parameter | Standard OEM Mini Unit (300L - 1000L) | Medium Truck/Skid Unit (1500L - 3000L) | Heavy Industrial Unit (4000L+) |
|---|---|---|---|
| Heating System | Automatic LP Gas / Diesel Burner | Italian Riello Diesel Burner + Thermal Oil | Dual Burner Indirect Thermal Oil System |
| Pumping Mechanism | High-Viscosity Asphalt Gear Pump | Hydraulic-Driven Positive Displacement Pump | Proportional Servo-Controlled Gear Pump |
| Spray Bar Width | Handheld Wand + 1.5m Fixed Bar | 2.4m - 4.0m Telescopic Hydraulic Bar | 6.0m Full-Width Folding Hydraulic Bar |
| Spray Density Accuracy | ± 3% Controlled via Manual Valve | ± 1.5% Computer Synchronized Control | ± 1.0% Microprocessor Radar Control |
| Material Compatibility | Emulsified Bitumen, Cutback Tar | Modified Bitumen, Rubberized Tar, Emulsion | All Bituminous & Polymer Binder Grades |
| Insulation Jacket | 50mm High-Density Rockwool | 80mm Silicate Fiber + Stainless Shell | 100mm Dual Layer Thermal Barrier Stainless |
Our engineering team utilizes power-matching technology between auxiliary diesel engines and hydraulic pumps. This guarantees constant pumping pressure even when engine RPM fluctuates, preventing localized over-spraying or thin spots on the road surface.
Incorporating intelligent electronic control units (ECUs), our OEM sprayers allow operators to set desired spray rates directly from the cab or handheld digital interfaces. Real-time radar sensors adjust pump output dynamically based on vehicle ground speed.
Highway contractors across North America, Europe, Southeast Asia, the Middle East, and Africa face distinct climate challenges, material standards, and budget constraints. As a recognized supplier exporting to over 60 countries, HEM Group tailors small tar sprayer configurations to regional procurement needs.
Primary Regions: Southeast Asia, Central Africa, South America.
High moisture levels require rapid-setting emulsion sprayers with high-pressure air cleaning systems to prevent premature water condensation inside distribution pipelines.
Primary Regions: Middle East, North Africa, Australia.
Demands heavy-duty engine cooling radiators, heat-resistant hydraulic seals, and double-insulated tanks capable of maintaining rubberized bitumen at 180°C+ without thermal breakdown.
Primary Regions: Eastern Europe, Central Asia, Northern North America.
Requires dual-fuel preheating systems and rapid thermal-oil circulating jackets to quickly liquefy viscous bitumens in sub-zero ambient temperatures.
HEM Group (originally founded as Xi'an Hongda Communications Technology Co., Ltd. in 1998 by Chang'an University professors and veteran highway machinery experts) stands as one of China's pioneer high-tech enterprises in road maintenance machinery.
Our dedicated R&D department collaborates continuously with Chang'an University's Key Laboratory of Road Construction Machinery. This synergy has yielded dozens of scientific breakthroughs in mechanical dynamics, engine power matching, hydraulic transmission stability, and digital electronic metering.
Officially recognized as a High-Tech Enterprise by the Shaanxi Provincial Department of Science and Technology in 2006, HEM Group maintains rigorous quality benchmarks exceeding ISO9001 and CE international standards.
Our small tar sprayers work seamlessly alongside our broader machinery line to deliver comprehensive road construction and pavement restoration ecosystems:
Below is the detailed background of HEM Group and our complete product ecosystem, preserved and integrated for global buyer verification.
HEM Group was founded by a group of professors from Changan University and experts in the road building industry in 1998, which was firstly called Xi'an Hongda Communications Technology Co., Ltd. It is the earliest high-tech company that focuses on independent research and design of road construction equipment in China.
Since its inception, the company has adhered to the principle of being guided by high-tech research and development and aiming to create an international brand for Chinese construction machinery. We focus on the research and development of high-end road maintenance machinery products, and have obtained a series of invention patents and scientific research achievements in mechanical dynamics, engine power matching, hydraulic transmission technology, and digital electronic control technology. In 2006, we were recognized as a "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology.
In 2017, in order to better strengthen international exchanges and trade, the company established a dedicated export sales company, HME TOP Machinery Equipment Co., Ltd., which is mainly responsible for international technical exchanges, import and export trade of self-operated products, after-sales service, and technical support.
By now, we have developed a complete chain of road construction and maintenance products, providing customers with one-stop service. Our products mainly include road construction and maintenance machinery like the milling machine, asphalt distributor, asphalt paver, chip sealer, slurry seal machine, road widener, paver feeder; mining machinery like mobile crusher, jaw crusher & screen machine, mobile vibrating screen machine; earth-moving equipment like road roller, excavator, backhoe loader, wheel loader as well as relative spare parts.
Our machinery is exported to more than 60 countries and regions globally, including India, Sri Lanka, Indonesia, Nigeria, South Africa, Eritrea, Mozambique, Congo, Australia, Fiji, Bolivia, etc.
Navigating cross-border procurement requires robust logistics, compliance certification, and reliable after-sales backup. As a verified OEM partner, HEM Group ensures seamless machine deployment from factory floor to job site.
Full support for global import documentations including Form E, Certificate of Origin, CE Conformity declaration, and ISO 9001 quality audit reports to expedite customs clearance.
We maintain localized warehouses and authorized distributor stocks in Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka to deliver fast spare parts replacement.
Dedicated technical helpdesk staffed by certified mechanical and hydraulic engineers, providing remote diagnostics, video troubleshooting, and rapid engineer dispatch.
Essential technical and procurement insights for machinery dealers, municipal engineers, and general contractors.
Hand-operated units rely on operator manual speed and valve positioning, making them ideal for small patch repairs and tight corners. Computer-controlled units utilize ground speed sensors and automated digital valves to maintain precise volume per square meter regardless of vehicle speed, making them suitable for large tack coating contracts requiring strict audit compliance.
Yes. When ordering OEM units for PMB or rubberized bitumens, we equip the sprayer with a thermal-oil circulation jacket, high-torque positive displacement gear pump, and direct-fired high-output diesel burners capable of reaching and sustaining temperatures up to 180°C–200°C without line clogging.
Our machines feature a dual cleaning mechanism. After spraying, the operator activates a high-pressure air blow-back cycle that forces residual bitumen out of the spray bar back into the tank. Following air purging, a small quantity of diesel solvent is flushed through the lines and pump, leaving the system clean for the next operational cycle.
We offer three flexible mounting options: 1) Trailer-mounted with single/double axle and tow hitch; 2) Skid-mounted for flatbed truck placement; and 3) Fully integrated truck-chassis mounted units adapted to local chassis brands (such as ISUZU, SINOTRUK, FAW, or DONGFENG).
Standard skid or trailer-mounted units are typically produced and tested within 15 to 25 business days. Custom truck-mounted or specialized PLC-integrated orders generally take 30 to 45 days, depending on chassis delivery and regional certification requirements.
Explore additional specialized machinery engineered by HEM Group for highway, aggregate, and emergency construction projects.
HME Machinery