Extendable / Telescopic Lowbed Semi-Trailer / Stretch Lowboy Semi-Trailer
The Extendable / Telescopic Lowbed Semi-Trailer is an advanced heavy-duty transport semi-trailer engineered specifically for hauling oversized, exceptionally long industrial cargo such as wind turbine blades, steel bridge girders, long industrial pipes, columns, and large structural frameworks. 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. Featuring a multi-stage telescopic sliding main beam mechanism that extends the deck length (stretching up to 40–50+ meters), combined with an ultra-low loading deck (700–1,100 mm) and multi-axle steering configurations, it provides exceptional length adaptability, prevents structural sagging under extreme spans, and ensures strict highway bridge clearance and turning radius 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 | Extendable / Telescopic Lowbed Semi-Trailer / Stretch Lowboy Semi-Trailer |
| Condition | 100% Brand New |
| Rated Load Capacity | 30 – 150+ Tons |
| Overall Dimensions (L×W×H) | 13,000–22,000 (Extendable up to 45,000+) × 2,500–3,000 × 1,500–3,500 mm |
| Low Deck Length | 9,000 – 15,000 mm (Telescopic sliding range: +15,000 to +25,000 mm) |
| Loading Deck Height | 700 – 1,100 mm |
| HS Code | 8716391000 |
| International Certifications | ECE, ISO9001, CCC, CE, DOT, SGS |
Key Structural & Performance Features
1. Multi-Stage Telescopic Box-Type Main Beam Mechanism
- Telescopic Sliding Structure: Features robust single, double, or triple internal box-beam extension sections locked securely via high-strength heavy-duty locking pins to adjust overall trailer length dynamically.
- High-Tensile Steel Construction: Fabricated with Q345B, Q550, Q700, or T700 steel plates, specially engineered to resist severe bending moments and torsional forces when fully extended.
- Automated SAW Welding: Robotic Submerged-Arc Welding (SAW) combined with $CO_2$ gas-shielded welding guarantees exceptional structural endurance across sliding joints and frame rails.
- Low-Profile Deck Design: Sunken loading platform height ranging from 700 mm to 1,100 mm, keeping the center of gravity low for stability during transport of long, high-profile loads.
2. Axle, Suspension & Hydraulic Steering Systems
- Axle Configurations: 2 to 6 axles (FUWA, BPW, Huajin, or equivalent premium brands; 13T / 16T / 20T / 25T capacity per axle).
- Steering Axle Options: Optional hydraulic automatic or remote-controlled steering axles with wide articulation angles to ensure superior maneuverability on sharp turns and narrow access roads.
- 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 or shock-absorbing air/hydraulic suspension system.
- Braking System: Dual-line ABS anti-lock braking system (WABCO, Kemi, Haldex, or equivalent) for reliable stopping performance under extended heavy payloads.
3. Cargo Securing & Telescopic Logistics Setup
- Secure Locking Pin System: Multi-position pneumatic or manual locking pin slots placed at precise intervals along the beam to secure the exact extended length safely.
- Platform Width Extension: Heavy-duty side outriggers extend platform width by 250–300 mm per side to accommodate wide structural modules.
- Cargo Securing Systems: GR120 heavy-duty lashing chains, D-ring tie-down anchor points, and specialized cradles to lock oversized long cargo firmly against shifting.
- Standard Accessories: 28-Ton two-speed landing gear (JOST / FUWA), 50# (2") or 90# (3.5") interchangeable kingpins, 24V 7-pin LED lighting system with extension warning flags/lights, 1–2 spare tire carriers, and a lockable tool box.
Commercial & Logistics Terms
- Warranty Policy: 3-Year warranty for the main beam and telescopic sections; 1-Year warranty for axles.
- Delivery Lead Time: 30 – 40 working days upon order confirmation.
- Packaging & Shipping: Nude packing; shipped via Ro-Ro vessel, Bulk Cargo ship, or Special Flat Rack Container.
- Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit).
