Direct OEM Factory Engineering Solutions tailored for global heavy infrastructure projects
Authoritative analysis of positive displacement liquid handling, thermal jacket insulation, and viscosity dynamics
Prevents fluid crystallization and cold-lock. Integrated hot oil/steam jacketed pump casing ensures rapid preheating and maintains stable liquid temperatures up to 250°C during continuous spray operations.
Engineered for straight-run bitumen, emulsified asphalt, PMB (Polymer Modified Bitumen), and Crumb Rubber Modified Bitumen (CRMB) with viscosity handling capabilities ranging from 10 cSt to 50,000 cSt.
Delivers pulse-free, uniform displacement output critical for smart bitumen distributors, chip sealers, and micro-surfacing machinery to ensure exact binder application per square meter.
Bitumen sprayer pumps operated in modern highway maintenance machinery must overcome severe mechanical stresses, abrasive polymer additives, and extreme thermal cycling. HEM Group’s OEM Bitumen Sprayer Pump series incorporates specially heat-treated high-chromium alloy gears, self-lubricating graphite packing seals, and variable displacement hydraulic drive compatibility. Our designs achieve a volumetric efficiency exceeding 93%, mitigating recirculation slip even under elevated discharge pressures up to 1.6 MPa.
| Pump Type / Series | Viscosity Range (cSt) | Max Temp (°C) | Flow Rate (L/min) | Ideal Application Scenario | Heating Mechanism |
|---|---|---|---|---|---|
| Jacketed Internal Gear Pump | 50 – 50,000 | 260°C | 100 – 1,200 | Asphalt Distributors, PMB Spraying, Chip Sealers | Thermal Oil / Steam Jacket |
| Rotary Lobe Bitumen Pump | 10 – 30,000 | 200°C | 150 – 2,000 | Asphalt Emulsion Plants, Tanker Transfer | Hot Water / Oil Jacket |
| External Gear Transfer Pump | 100 – 10,000 | 220°C | 50 – 800 | Asphalt Mixing Plants, Burner Feeding | Electric / Hot Thermal Fluid |
| Vane Displacement Pump | 5 – 5,000 | 180°C | 200 – 1,500 | Light Bitumen Transport, Fuel & Cutback Transfer | Integrated Direct Heat Exchanger |
HEM Group was founded by a group of professors from Chang'an University and experts in the road building industry in 1998, initially established as Xi'an Hongda Communications Technology Co., Ltd. It stands as the earliest high-tech enterprise focusing on independent research and design of road construction and maintenance equipment in China.
Since its inception, the company has adhered to high-tech R&D to build an international benchmark for Chinese construction machinery. Recognized as a "High-tech Enterprise" by the Shaanxi Provincial Department of Science and Technology in 2006, our scientific 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 streamline international technical exchanges, global export logistics, customized OEM/ODM projects, and on-site technical support.
Providing custom bituminized liquid metering and road engineering machinery across diverse global environments
Heavy-duty bitumen sprayer pumps integrated into intelligent bitumen distributors and synchronized chip sealers ensure continuous tachometer-linked binder spraying for prime coats, tack coats, and surface treatments.
High-shear liquid dosing pumps tailored for modified asphalt plants (SBS, SBR, Rubberized Bitumen), maintaining steady volumetric feed rate into colloid mills without fluid slippage or seal degradation.
Mounted on semi-trailer asphalt tankers and mobile container decanters, providing rapid loading/unloading rates (up to 60 m³/h) with bi-directional reversible pumping options.
Supporting earthworks, trenching, foundation compaction, and subgrade stabilization for mining and municipal infrastructure.
Complete paving systems, milling equipment, cold in-place recyclers (CIPR), and precision asphalt distributors.
Mobile jaw crushers, mobile screening units, and rock processing machinery engineered for tough quarry operations.
Strategic technological integration, competitive cost structure, and full-spectrum manufacturing capabilities
Engineered under academic guidance from Chang'an University highway engineers. Over 20 invention patents in power matching, hydraulics, and thermal fluid control systems.
Full customizability for specialized bitumen sprayer pumps, tank dimensions, heating coil capacities, pump mounting flanges, and hydraulic motor couplings according to client specs.
Precision CNC gear hobbing, thermal stress relief treatments, and 100% hydrostatic and hot oil flow testing prior to export dispatch ensure plug-and-play reliability.
Local distribution hubs and service engineers active across Russia, Malaysia, South Africa, Uzbekistan, Ghana, Kenya, Indonesia, and Sri Lanka for rapid spares delivery.
Robust supply chain integration based in Xi'an allows ultra-competitive direct-from-factory pricing without sacrificing component quality or material certifications.
Seamless international shipping management, ISO/CE compliance, customs clearance documentation, and multi-language technical manuals included.
Exported to over 60 countries and regions worldwide including India, Sri Lanka, Indonesia, Nigeria, South Africa, Australia, Fiji, and Bolivia
Expert answers regarding installation, thermal maintenance, drive coupling, and OEM custom orders
Complete product range for road paving, crushing, excavation, and asphalt processing
HME Machinery