Folding Gooseneck Lowbed Semi-Trailer
The Folding Gooseneck Lowbed Semi-Trailer is an advanced heavy-haul semi-trailer designed with a hydraulically or mechanically folding front gooseneck that lays flat to form a low-incline front loading ramp. 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 folding gooseneck mechanism allows heavy self-propelled equipment (such as pavers, rollers, crawlers, and excavators) to drive straight onto the ultra-low loading deck (500–900 mm) from the front without requiring separate rear ramps or full gooseneck detachment. This design reduces loading setup time, optimizes weight distribution, lowers the center of gravity, and ensures strict highway bridge clearance compliance. 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 | Folding Gooseneck Lowbed Semi-Trailer / Fold-Down Gooseneck Lowboy Trailer |
| Condition | 100% Brand New |
| Rated Load Capacity | 30 – 150+ Tons |
| Overall Dimensions (L×W×H) | 12,500–18,000 × 2,500–3,000 × 1,200–3,500 mm |
| Low Deck Length | 7,500 – 10,500 mm |
| Loading Deck Height | 500 – 900 mm |
| HS Code | 8716391000 |
| International Certifications | ECE, ISO9001, CCC, CE, DOT, SGS |
Key Structural & Performance Features
1. Hydraulic Folding Gooseneck Front-Loading Mechanism
- Multi-Stage Hydraulic Folding: Heavy-duty hydraulic cylinders unfold the gooseneck articulate joints downward to rest flat against the ground, acting as a built-in front ramp.
- Rapid & Safe Drive-On Loading: Eliminates the need to detach the gooseneck completely, reducing coupling time while enabling low-clearance crawler machines and asphalt pavers to drive on smoothly.
- High-Tensile Steel Structure: Fabricated with Q345B, Q550, Q700, or T700 steel plates engineered to sustain extreme dynamic loading and bending stresses during the folding cycle.
- Automated SAW Welding: Submerged-Arc Welding (SAW) combined with $CO_2$ gas-shielded welding guarantees exceptional frame durability and joint endurance under heavy loads.
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 maximum stopping safety under full payload.
3. Equipment Loading & Cargo Securing Setup
- Integrated Hydraulic System: Driven by an onboard diesel/electric hydraulic pump station or connected directly to the tractor's truck-mounted PTO system.
- Platform Width Extension: Heavy-duty side outriggers extend platform width by 250–300 mm per side to fit wide crawler tracks and construction vehicles.
- Cargo Securing Systems: GR120 heavy-duty lashing chains, D-ring anchor points, and wheel chocks to lock cargo 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 waterproof 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).
