Engineered for absolute distribution precision, thermal efficiency, and high-speed pavement preservation across demanding global road infrastructures.
Modern highway asset management relies heavily on preventative maintenance to extend pavement service life while controlling life-cycle expenditure. Among the array of surface dressing methodologies, Synchronized Chip Sealing has emerged as the most cost-effective and structurally resilient solution. Unlike conventional, multi-pass chip sealing—where bitumen distribution and aggregate spreading occur independently—modern Chip And Seal Machines execute the simultaneous application of hot modified asphalt (or emulsion) and aggregate chips within a fraction of a second.
This synchronized deposition ensures that aggregate particles are embedded into the fresh bitumen binder while its thermal energy is at its absolute peak, maximizing mechanical interlock, preventing chip loss (shelling), and eliminating binder oxidation prior to chip seating. As a premier Chip And Seal Machine Manufacturer & Factory rooted in academic excellence and rigorous mechanical engineering, HEM Group (HME TOP Machinery) pioneers advanced synchronized chip sealing solutions that bridge high-speed construction capability with sub-millimeter dosing accuracy.
Information Gain Insight: Empirical field trials demonstrate that synchronized bitumen-aggregate application within a 0.5-second window increases chip adhesion strength by up to 38% compared to sequential spreading, effectively doubling the surface treatment lifespan under high-volume heavy truck traffic.
Achieving structural uniformity across variable road widths demands sophisticated integration of mechanical dynamics, hydraulic fluid power, and real-time electronic metering. Our intelligent Chip and Seal equipment portfolio is designed with the following core technology stacks:
Fully integrated micro-processor controls continuously recalculate binder spray rates and aggregate distribution volumes based on real-time vehicle ground speed sensors, maintaining precise distribution density (kg/m²) regardless of driving speeds.
Triple-overlapping spray nozzles powered by proportional hydraulic pumps eliminate streak formation and uneven binder lines. Individual nozzle control allows instant adjustment of sealing widths on uneven or rural road profiles.
Heavy-duty insulated bitumen tanks equipped with automatic diesel heating burners and internal thermal oil circulation loops keep complex polymer-modified asphalt (PMA) and rubberized bitumen at optimal spraying temperatures.
Global procurement intent for road machinery has pivoted dramatically from basic equipment sourcing to evaluating life-cycle operating costs, supply chain reliability, and multi-functional adaptability. Municipal departments of transportation (DOTs), regional civil contractors, and international concessionaires face mounting pressures:
Combining top-tier academic research with scalable smart manufacturing to deliver world-class road engineering machinery.
HEM Group was established in 1998 by distinguished professors from Chang'an University—China's premier academic institute for highway engineering and heavy machinery design. Originally known as Xi'an Hongda Communications Technology Co., Ltd., our engineering foundation is built on proprietary scientific research in mechanical dynamics, engine power matching, hydraulic transmission, and digital electronic control systems.
Recognized as an official High-tech Enterprise by the Shaanxi Provincial Department of Science and Technology in 2006, our technological breakthroughs are directly translated into commercial machinery that matches or exceeds European quality benchmarks at a far superior total cost of ownership.
Operating from a 5,000+ m² modern production base with an annual capacity exceeding 5,000 equipment units, our integrated manufacturing ecosystem guarantees unmatched supply chain resilience. Every component—from CNC-machined spray nozzles to heavy-duty chassis assemblies—undergoes rigorous ultrasonic weld inspection, dynamic balancing, and high-pressure hydraulic stress testing prior to global dispatch.
Through our dedicated international trading and engineering division, HME TOP Machinery Equipment Co., Ltd. (est. 2017), we manage export documentation, custom engineering modifications, and logistics for clients across 60+ nations.
From high-speed expressways to extreme climate mountain passes, our Chip and Seal machines are field-proven worldwide.
Designed for rapid deployment on high-traffic arterial roads. Synchronized high-volume spraying ensures single-pass operation with minimal lane-closure duration, restoring friction coefficient (skid resistance) and sealing micro-fissures efficiently.
Ideal for cost-effective transformation of unpaved gravel roads into waterproof, dust-free paved surfaces. Flexible spray bar extension allows seamless adaptation to varying lane widths, shoulders, and rural topologies.
Equipped with reinforced thermal oil jackets and high-torque auxiliary hydraulic drives, our equipment operates reliably in tropical humidity (e.g., Southeast Asia, West Africa) as well as sub-zero mountain environments (e.g., Central Asia, Andes region).
Debris & dust removal via rotary sweepers or vacuum cleaners to ensure pure binder bond.
Simultaneous precision metering of hot bitumen and clean aggregate chips within <0.5s window.
Rubber-tire road rollers compact aggregate into binder matrix without crushing stone edges.
Sweeping excess loose chips followed by immediate uncontrolled traffic opening at restricted speeds.
Complete lifecycle support, custom engineering capabilities, and direct factory-to-site logistical assistance.
Our heavy road machinery and chip seal spreaders actively serve infrastructure projects across:
Answers to common technical, operational, and purchasing inquiries from road contractors and equipment dealers.
A synchronized chip sealer applies bitumen and aggregate chips within fractions of a second (<0.5s). This preserves the high surface temperature of the sprayed binder, ensuring immediate micro-wetting and superior mechanical embedment of the aggregate chips before the bitumen cools or oxidizes. The result is significantly reduced chip loss and extended road service life.
Yes. Our equipment is outfitted with heavy-duty heat-exchanger burner systems, full oil-jacketed asphalt pumps, and specialized pneumatic self-cleaning spray bars designed specifically to handle high-viscosity binders, including SBS polymer-modified bitumens and rubberized asphalt blends without clogging.
Our CAN-bus smart control system uses radar/encoder ground speed sensors to constantly monitor travel velocity. The automated controller dynamically regulates hydraulic pump displacement and gate opening widths, ensuring precise binder dosage (kg/m²) and aggregate distribution regardless of vehicle acceleration or speed fluctuations.
We offer comprehensive OEM customization including mounting onto specific chassis brands (e.g., Sinotruk, Shacman, MAN, Volvo, Isuzu), variable spray bar widths (up to 4.2m or custom specifications), customized hopper capacities, multi-lingual touchscreen interfaces, and climate-specific thermal insulation packages.
We provide 24/7 technical online diagnostics, comprehensive video operation manuals, and on-site engineering support. Our field technicians can be dispatched for equipment commissioning, operator training, and calibration at your project location. Local spare parts support is available through our regional partner warehouses.
Standard equipment lead times range from 15 to 30 days depending on OEM customization requirements. We handle all export documentation, customs clearance, and containerized/Ro-Ro ocean freight transportation to major ports worldwide.
Explore our complete range of specialized equipment designed for durability, high production output, and low maintenance overhead.
HME Machinery