3 Axle Explosive Goods EX/II EX/III Semi Trailer

1. Overall Dimensions (mm, unladen transit condition)
- Overall dimension: **12600 ×2550 ×3900 (12.6m ×2.55m ×3.90m)**
- Internal box dimension: **12200 ×2480 ×2600**
- Effective volume: 78m³
- Kingpin fifth wheel height from ground: **1550mm**
- Wheelbase: 7000+1310+1310 mm
- Track width: 1820 mm
- Box doors: Rear double explosion-proof door locks; side doors optional; **independent partition compartments available inside (separate compartments for detonators and explosives)**
- Escort cabin: Independent duty compartment at front of box with bulletproof observation window

2. Weight Parameters
- Tare weight: **9.2 tons (standard explosion-proof version, including flame-retardant box and complete explosion-proof & anti-static assemblies)**
- Rated payload: **30.8 tons**
- GVWR (Gross Vehicle Weight Rating): **40 tons**
> Regulatory requirement: Explosive loading capacity shall strictly comply with ADR EX/EXIII limits. Detonators and explosives must be physically separated into different compartments; mixed loading in one compartment is strictly prohibited.

3. Chassis Main Beam & Explosion-Proof Box Structure (Core Safety)
1. **Chassis main beam, Q345B high-strength steel**
500mm I-beam: top flange 14mm, web plate 8mm, bottom flange 16mm, automatic submerged arc welding; surface treatment: sand blasting + epoxy primer + flame-retardant polyurethane topcoat.

2. **Explosion-proof & flame-retardant box**
- Wall panel: FRP fiberglass + flame-retardant PU foam sandwich panel, **flame retardant class B1** to restrain rapid flame spread
- Inner floor of box: Anti-static rubber lining, no exposed sharp metal edges to prevent sparks from friction and impact
- Inner box wall: Recessed fasteners without protruding bolts to avoid sparking from impact
- Anti-static: Continuous static grounding straps and bonding jumpers across the whole vehicle; equipotential grounding for all metal components
- Locks: Heavy-duty explosion-proof anti-theft mechanical locks with double locking; GPS remote lock control and alarm function
- Escort cabin: Bulletproof glass, independent ventilation for escort personnel on duty

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 to reduce bump impact
3. Tires: 12 pcs **12R22.5**; explosion-proof tires optional; steel rim 9.00-22.5, 1 spare tire
4. Landing Gear: JOST 28-ton two-speed landing gear

5. Explosion-Proof Electrical & Safety Protection (Mandatory standard for hazardous explosive vehicles)
1. Electrical system: **Full-vehicle explosion-proof LED lights, explosion-proof junction boxes, non-sparking switches**. All cables run through flame-retardant metal conduits; bare wires are not allowed.
2. Monitoring: In-box video surveillance, vibration alarm, GPS positioning, temperature monitoring for remote background supervision
3. Fire protection: Dry powder fire extinguishers and fire blankets inside box; box with heat insulation and flame retardancy
4. Warning marks: ADR explosive labels, reflective markings and hazard warning plates posted on front, rear and side surfaces
5. Static protection: Static grounding reel for static discharge when parking

6. Towing & Braking (ECE R105, dangerous goods certification)
- **Kingpin: 3.5 inch (popular for Africa), 2 inch optional, supports CKD packing**
- Braking system: WABCO dual-line air brake, ABS+EBS, emergency air-break protection; dual air reservoirs; brake temperature monitoring fitted
- Electrical system: 24V, ISO 7-core explosion-proof socket

Optional Upgrades
- Air suspension + lift axle
- Thickened bulletproof escort cabin
- Multi-compartment independent partition (complete separation between explosive compartment and detonator compartment)
- Explosion-proof tires and tire pressure monitoring system
- Remote locking + vibration alarm system
- Tool box, mudguards, reinforced rear protection