
One-stop semi-trailer factory in China
Shandong Liangyu Special Vehicles Co., Ltd. is an international enterprise specializing in the design, manufacturing and export of semi-trailers and special vehicles. The factory is located in Liangshan, the semi-trailer production base of China, covering an area of 200,000 square meters. It has been established for nearly 20 years.
Product details presentation






Product Specifications
| Products name | Flatbed Semi Trailer with 3 axles | Beam | Longitudinal beam height:500mm upper wing panel 14 mm center panel 6/8mm lower wing panel 16 mm |
| Products size | 12500mm*2500mm*1500mm | Floor | Pattern 3 mm |
| Products Tare weight |
Around7.5 tons | Bumper | Factory standard |
| Products payload | 50~60 tons | Lashing Hooks | Have |
| Axle | 13T*3pcs | Spare wheel carrier |
Factory standard |
| Suspension | Mechinal suspension/Air suspension | Toolbox | 1 pc |
| Tyres | 12pcs | Mud flaps | Factory standard |
| Landing Legs | Single action/Coupling outriggers | Container Locks | 12 pcs |
| Air chamber specification |
6 double | Paint | Double-componet spray paint |
| Lights&Wiring | DIN 7 pin socket,24-volt systerm,dual LED combination stop,tail and separate indicator lights. |
Products Advantage
1. Dual-purpose design – one trailer, two functions
With uprights installed, the trailer secures loose cargo such as steel pipes, timber logs, and coils from rolling off the deck. With uprights removed, it converts into a standard flatbed for oversized loads like heavy machinery, concrete beams, and large steel plates. You get two trailers in one.

2. Tool-free operation – quick-release pin system
Each upright is secured by a spring-loaded quick-release pin. No wrenches, no special tools – just pull the pin and remove the upright in seconds. This means faster loading, faster unloading, and less downtime between jobs.

3. Anti-slip deck – stability in all weather conditions
The 3-axle heavy-duty suspension and reliable braking system ensure stable driving and lower rollover risks under heavy loads.
Even weight distribution reduces parts wear, and anti-corrosion treatment extends service life with low maintenance costs.

4. Heavy-duty steel frame – built to last
The main frame is constructed from high-strength Q345B steel, known for its excellent resistance to bending, twisting, and metal fatigue. Cross beams are spaced every 500mm for even load distribution. This trailer is designed for years of heavy use on rough roads.

5. Fully customizable – we build to your specifications
Upright height can be customized from 300mm to 800mm. Deck length available in standard 40FT, 45FT, 48FT, or custom sizes. Paint color, company logo, and additional features like toolboxes or spare tire holders can be added upon request. OEM and ODM orders are welcome.
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International Cooperation


Factory Display



why choose us
Our trailers meet the needs of multiple fields such as logistics, construction engineering, agriculture, and industrial equipment transportation. Our products can adapt to various complex environments.
why choose us
Problem Solver, Not Order Taker
Before we build, we ask about your roads, loads, and deadlines. Mountain passes? Unpaved sites? Wind blades or steel pipes? Your answers shape our design. You get equipment that fits your actual working conditions.
20+ Years of Heavy-Duty Experience
We build wind blade carriers (25 to 130 meters), lowbed trailers, dump trucks, and flatbeds with uprights. Our team knows how steel behaves under heavy loads and how to prevent corrosion on long sea journeys.
Built to Last, Not for a Quick Sale
High-strength steel frames. Anti-rust wax coating before every ocean shipment. 12-month warranty on main frame, We want you to come back for your next trailer.
One-Stop Shop
Custom design, in-house manufacturing, sea freight (RORO/flat rack/bulk carrier), export documents, and spare parts – all from one supplier. One invoice. One point of contact.
We sincerely welcome friends from all over the world to visit our company for win-win cooperation.
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