Product Overview
A thermal oil circulation asphalt tanker trailer is not a standard fuel tanker. It is a mobile thermos engineered to transport bitumen at 150–200°C without solidification. The thermal oil circulation system is the core differentiator. Instead of exposing bitumen directly to a burner flame (which causes local overheating and coking), a thermal oil system circulates hot oil through serpentine coils inside the tank, heating the bitumen evenly from within.
This 3-axle 40,000-liter unit is built for road construction contractors and asphalt suppliers who need bitumen delivered ready for immediate paving – no reheating required on site. Because the heating is indirect and uniform, the bitumen arrives without “hot spots” that degrade polymer-modified binders, and without cold zones that clog discharge valves.
Key Specifications
| Parameter | Specification |
| Total capacity | 40,000 liters (40 m³) |
| Tank material | Q235B carbon steel, 6 mm shell / 8 mm end plates |
| Insulation type | 100 mm rock wool between inner tank and outer cladding |
| Outer cladding | Stainless steel cold plate or galvanised sheet |
| Heating system | Thermal oil circulation with serpentine coils |
| Heating fuel | Diesel burner (LNG/electric optional) |
| Working temperature | Up to 200°C |
| Axles | 3 (13 t or 16 t, BPW/FUWA optional) |
| Tyres | 12.00R20 or 12R22.5 |
| Suspension | Mechanical leaf spring (air suspension optional) |
| Brake system | WABCO dual-line with ABS |
| Landing gear | JOST 28 t two-speed |
| Kingpin | 2 ″ or 3.5 ″, JOST certified |
| Discharge | 3 ″ or 4 ″ ball valves, DN100 bottom valves |
| Pump system | Optional asphalt pump for pumping unloading/pumping canning |
| Temperature monitoring | Thermometer + overfill warning system |
| Tare weight | ≈ 11,500 kg |
| Payload | ≈ 40,000 kg (with 3-axle 16 t configuration) |
| Overall dimensions | approx. 12,500 × 2,500 × 3,800 mm |
Why Thermal Oil Circulation Matters for Bitumen Transport
Bitumen solidifies at room temperature and needs 150–200°C to stay pumpable. Thermal oil circulation solves 3 key issues direct-flame systems can’t:
- Uniform Heating, No CokingThermal oil coils heat the tank evenly, avoiding hot spots that scorch bitumen and clog pumps/valves—no coking or asphalt damage.
- Reliable Cold StartsRapid thermal oil heating prevents heavy pump/motor load from cold starts (a top cause of failures), eliminating this risk.
- Energy Efficiency100mm rock wool insulation minimizes heat loss; diesel consumption ≤15L per 8-hour trip.
Built for Real Haulage Conditions
100mm high-density rock wool insulation (between inner tank & stainless steel cladding). ≤1°C/h temperature drop at 80km/h (20°C ambient), verified by 8-hour road test.
Multi-compartment tank (up to 5 insulated/heated compartments) for different bitumen grades/temperatures in one trip. Internal baffles reduce liquid surge, enhancing braking/cornering stability.
Certified safety systems: pressure/vacuum relief valves, overfill warning, anti-static grounding, emergency vents, EN 13314-compliant fill covers. 3″/4″ ball valves + dual 6m hoses for spill-free unloading.
3 unloading modes: gravity self-flow, pneumatic discharge, pump-assisted (including canning). Hot air flushing clears residual bitumen to prevent blockage/hardening.
Heat tracing for pump/valves: thermal oil circulation keeps unloading operational even in sub-zero climates, no external assistance needed.
Alternative heating options (base: thermal oil):
– Electric heating: low-noise overnight maintenance (stable power required)
– Dual heating: thermal oil + electric, 12–15% annual fuel savings
– LNG burner: 25% lower CO₂ emissions vs diesel
– 220V generator: powers heating when tractor engine is off
Application Scenarios for This Asphalt Tanker Trailer
- Asphalt Mixing Plant Deliver hot bitumen from refineries to plants; pump unloading keeps temperature stable.
- Highway & Road Construction Maintain 160–180°C for 10-hour transit, direct supply to paving equipment without reheating.
- Large Infrastructure Projects Multi-compartment design transports different asphalt formulas for bridges, airports and ports in one trip.
- African & Middle East Remote SitesRugged structure and quality axles adapt to unpaved roads, ideal for Africa and Middle East markets.
- Roofing Material Production** Stable bitumen viscosity guaranteed for shingle and waterproof membrane manufacturing.
- Industrial Pipe Coating Precise temperature control protects bitumen quality for anti-corrosion coating works.
Factory Direct Advantage
Lead time: 30–35 working days for a 3-axle 40,000-liter thermal oil asphalt tanker（compared to 45–60 days from established manufacturers）
Transparent fabrication: We send time-stamped photos every 3 days – tank shell rolling, insulation application, serpentine coil installation, final assembly, and paint.
Custom tank configuration: You specify the number of compartments（1–5）, manhole locations, pump type, and burner orientation（left or right side for driver convenience）.
One set of drawings per order: You approve the tank cross-section, compartment layout, and heating coil routing before steel is cut.
Test summary included: Each trailer undergoes a 4-hour heat retention test before loading onto the ship. The report shows starting temperature, ambient temperature during the test, and temperature after 4 hours with the burner off.
