Tri-Axle Refrigerated Box Semi Trailer (Main Export Model for Africa & Central Asia, for cold-chain fresh produce, meat, fruits, vegetables and vaccine transportation)

1. Overall Dimensions (mm, unladen transit condition)
- Overall dimension: **13000 × 2550 × 3980 (13.0m × 2.55m × 3.98m)**
- Internal box dimension: **12600 × 2450 × 2650**
- Effective volume: **82m³**
- Kingpin fifth wheel height from ground: **1550mm**
- Wheelbase: 7000 +1310 +1310 mm
- Track width: 1820mm
- Box door: Rear double doors, side doors optional; waterproof and airtight sealing strips

2. Weight Parameters
- Tare weight: **11.5 tons (including refrigeration unit + insulated box body)**
- Rated payload: **28.5 tons**
- GVWR (Gross Vehicle Weight Rating): **40 tons**
> Remark: The insulated box and refrigeration unit add considerable weight. Compared with ordinary box semi-trailers, **the available payload is lower**. It is not suitable for heavy cargo such as ore and sand.

3. Chassis Main Beam & Insulated Box Structure
1. **Chassis main beam, Q345B high-strength steel**
- 500mm I-beam: top flange 14mm, web plate 8mm, bottom flange 16mm, automatic submerged arc welding
- Densely spaced cross members; ventilated aluminum rails on floor for cold air circulation
- Coating: Sand blasting + epoxy primer + polyurethane topcoat
2. **Insulated sandwich panel (FRP fiberglass + PU polyurethane foam)**
- Wall & roof insulation thickness: 80mm; floor insulation thickness: 100mm
- Thermal conductivity K-value ≤0.35 W/(m²·K), excellent thermal insulation performance
- Floor: Aluminum alloy anti-slip ventilated floor with drain holes for easy cleaning
- Optional multi-temperature partition, allowing simultaneous transport of frozen and fresh goods in one trailer

## 4. Running Gear (Tri-Axle)
1. Axles: 3 pcs FUWA 13-ton axles (BPW optional)
2. Suspension: Mechanical leaf spring suspension; leaf spring 90mm width ×10 pieces; **Air suspension preferred for premium clients** (shock absorption to reduce damage of fresh goods caused by bumping)
3. Tires: 12 pcs **12R22.5**; steel rim 9.00-22.5, 1 spare tire
4. Landing Gear: JOST 28-ton two-speed landing gear

5. Refrigeration Unit (Core Export Configuration)
- Refrigeration brands: **Thermo King / Carrier** (mainstream overseas brands), domestic refrigeration units optional
- Temperature control range: **-20℃ ~ +25℃ adjustable**, dual-purpose for freezing and fresh keeping
- Independent diesel power with built-in fuel tank; built-in temperature recorder to meet food cold-chain export certification
- Optional remote temperature monitoring

6. Towing, Braking & Electrical System (ECE/GCC Export Certification)
- **Kingpin: 3.5 inch (popular for Africa), 2 inch optional, bolt-on detachable design for CKD packing**
- Braking system: Dual-line air brake, WABCO valve assembly, ABS as standard
- Air tank: 40L
- Electrical system: 24V, 7-core ISO socket, LED tail lamps, reflective markings

Optional Upgrades
- Air suspension + lift axle
- Full aluminum alloy box skin for weight reduction and corrosion resistance
- Middle partition inside box for multi-temperature zones
- Hydraulic rear loading tail lift
- Tool box, mudguards, tail lamp protection frame