Hydraulic Ramp Lowbed Semi-Trailer
The Hydraulic Ramp Lowbed Semi-Trailer is a heavy-duty industrial lowboy semi-trailer custom-engineered for efficient, effortless, and safe loading of heavy self-propelled construction machinery, mining equipment, and tracked vehicles. Built with a load capacity ranging from 30 to 150+ tons, it is constructed using Q345B/Q550/Q700/T700 high-tensile steel and automated submerged-arc welding. Its defining feature is a heavy-duty hydraulic folding ramp system powered by an independent hydraulic power unit or tractor PTO, allowing operators to adjust ramp angles smoothly to an ultra-flat incline. Combined with a low deck height (700–1,100 mm), multi-axle configurations, and anti-skid wooden/steel decking, it minimizes loading risks for low-clearance equipment while ensuring absolute highway bridge clearance compliance and long-distance transport stability. Fully certified under ECE, ISO9001, CCC, CE, DOT, and SGS standards.
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Product Details
Technical Specifications Matrix
| Specification Category | Parameter Details |
| Product Name | Hydraulic Ramp Lowbed Semi-Trailer / Hydraulic Fold-Ramp Lowboy Semi-Trailer |
| Condition | 100% Brand New |
| Rated Load Capacity | 30 – 150+ Tons |
| Overall Dimensions (L×W×H) | 12,500–18,000 × 2,500–3,000 × 1,500–3,500 mm |
| Low Deck Length | 7,500 – 9,700 mm |
| Loading Deck Height | 700 – 1,100 mm |
| HS Code | 8716391000 |
| International Certifications | ECE, ISO9001, CCC, CE, DOT, SGS |
Key Structural & Performance Features
1. Heavy-Duty Hydraulic Folding Ramp System
- Hydraulic Lift & Fold Actuation: Equipped with dual robust hydraulic cylinders that effortlessly lift, lower, and fold the rear ramps, eliminating manual lifting hazards and accelerating loading cycles.
- Ultra-Flat Incline Angle: Designed with a shallow loading gradient to prevent low-clearance excavators, pavers, and rollers from scraping their undercarriages during drive-on operations.
- High-Tensile Steel Frame: Fabricated with Q345B, Q550, Q700, or T700 steel plates, reinforced around the rear hinge brackets to withstand intense point loads from rolling equipment.
- Automated SAW Welding: Robotic Submerged-Arc Welding (SAW) combined with $CO_2$ gas-shielded welding guarantees exceptional joint durability and structural integrity under dynamic stresses.
2. Axle, Suspension & Braking Systems
- Axle Configurations: 2 to 6 axles (FUWA, BPW, Huajin, or equivalent premium brands; 13T / 16T / 20T / 25T capacity per axle).
- Tire & Rim Setup: 8 to 24 heavy-duty tires paired with 6.75-17.5 or 9.00-22.5 high-load steel rims.
- Suspension Options: Heavy-duty multi-leaf spring suspension (10/12 leaves) or shock-absorbing air/hydraulic suspension system.
- Braking System: Dual-line ABS anti-lock braking system (WABCO, Kemi, Haldex, or equivalent) for secure stopping performance under full rated payloads.
3. Equipment Loading & Cargo Securing Setup
- Independent Hydraulic Power Unit: Powered either by a dedicated onboard diesel/electric hydraulic pump station or the tractor's truck-mounted PTO system.
- Platform Width Extension: Outriggers and side brackets extend platform width by 250–300 mm per side to accommodate wide crawler tracks and dual-wheel vehicles.
- Cargo Securing Systems: GR120 heavy-duty lashing chains, D-ring tie-down anchor points, and wheel chocks to lock machine chassis firmly against displacement.
- Standard Accessories: 28-Ton two-speed landing gear (JOST / FUWA), 50# (2") or 90# (3.5") interchangeable kingpins, 24V 7-pin LED lighting system, 1–2 spare tire carriers, and a lockable tool box.
Commercial & Logistics Terms
- Warranty Policy: 3-Year warranty for the main beam; 1-Year warranty for axles and hydraulic components.
- Delivery Lead Time: 25 – 35 working days upon order confirmation.
- Packaging & Shipping: Nude packing; shipped via Ro-Ro vessel, Bulk Cargo ship, or Container.
- Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit).
