Semi-trailer for transporting pump truck chassis

1. Overall Dimensions (mm, transit condition)
- Overall dimension: **12500 × 3000 × 1600 (12.5m × 3.0m × 1.6m)**
- Effective deck length: **10500mm**
- Deck height from ground: **1050mm (Core feature! Low deck, suitable for super-high pump truck bodies)**
- Gooseneck height from ground: 1550mm
- Kingpin fifth wheel height: **1550mm**
- Wheelbase: 7000 +1310 +1310 mm
- Track width: 2020mm
- Rear ramp: Integral hydraulic ramp (allows pump truck to drive on by itself, standard for export)

2. Weight Parameters
- Tare weight: **9.2 tons (with hydraulic ramp)**
- Rated payload: **60 tons**
- GVWR (Gross Vehicle Weight Rating): **69.2 tons**
> Common self-weight of pump trucks in market: 37m pump truck ≈32 tons; 48m pump truck ≈38 tons; 56m pump truck ≈44 tons. This tri-axle lowbed provides ample load margin.

3. Main Beam & Frame (Q345B high-strength steel)
- Main I-beam: **500mm depth**
 - Top flange plate 14mm, web plate 8mm, bottom flange plate 16mm, automatic submerged arc welding
- Lowbed concave deck (gooseneck LOWBED type). Recessed middle section to reduce overall height after loading
- Deck plate: 4mm checkered steel plate, densely spaced cross members, plenty of lashing rings pre-installed (essential for securing pump truck chassis)
- Side guards and lashing lugs; 8 high-strength lashing rings on each side
- Coating: Sand blasting + epoxy primer + polyurethane topcoat

4. Running Gear (Tri-Axle)
1. **Axles**: 3 pcs FUWA 13-ton axles (BPW optional)
2. **Suspension**: Heavy-duty mechanical leaf spring suspension; leaf spring 90mm width, 10 pieces; air suspension optional
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. Rear Hydraulic Ramp (Core configuration for pump truck transportation)
- Integral hydraulic ramp driven by double cylinders
- Ramp width: 3000mm, anti-slip checkered plate with reinforcing ribs
- Foldable, stowed upward during transit; lowered for loading/unloading so the pump truck can drive onto the deck by itself
> Optional: **Mechanical fixed ramp (cost-saving option for clients with tight budget)**

6. Towing, Braking & Electrical System (ECE/GCC export compliance)
- **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, side marker lamps, reflective markings

Optional Upgrades
- Deck widened to 3.2m (for wider heavy-duty pump trucks)
- Air suspension, lift axle (lift axle under no-load to save fuel and reduce tyre wear)
- High-strength lashing chains, tool box, tail lamp protection frame
- Thickened main beam (custom heavy-duty version with 70 tons total load capacity)