Heavy Duty Flatbed Semi Trailer with 3 Axles for Container Transport
Product Description
The Heavy Duty Flatbed Semi Trailer with 3 Axles for Container Transport is designed for reliable transportation of standard shipping containers, general cargo, construction materials, steel products, and industrial equipment. With a 40-ton loading capacity, reinforced high-strength steel chassis, and heavy-duty 3-axle configuration, the trailer provides stable performance for port logistics and long-distance freight operations.
The trailer features a Q345/T700 high-strength steel main beam, reinforced 500 mm chassis structure, and a durable 3 mm loading platform. 12 sets of twist locks provide secure container positioning during transportation while maintaining the flexibility of the flatbed platform for different types of cargo.
ROADKING can customize trailer dimensions, suspension systems, tires, rims, front boards, and other components according to cargo requirements, operating conditions, and local transportation needs.

Technical Specifications
| Parameter | Specification |
| Brand | ROADKING |
| Product Name | Heavy Duty 3 Axle Flatbed Semi Trailer |
| Axle Configuration | 3 Axles |
| Overall Dimension | 12400 × 2500 × 1570 mm (Customizable) |
| Loading Capacity | 40 Tons |
| Suspension System | Mechanical Suspension / Air Suspension (Optional) |
| Chassis Type | Tandem Type |
| Main Beam Material | Q345 / T700 High-Strength Steel |
| Upper Plate Thickness | 16 mm |
| Middle Plate Thickness | 10 mm |
| Lower Plate Thickness | 18 mm |
| Main Beam Height | 500 mm |
| Platform Thickness | 3 mm |
| Tires | 12R22.5, Linglong / Triangle / Double Coin / Other Brand |
| Rims | 9.00 × 22.5, Steel / Aluminum |
| Leaf Spring | 90 × 13 mm × 10 pcs / 90 × 16 mm × 10 pcs |
| King Pin | #50 (2") / #90 (3.5"), JOST / Other Brand |
| Landing Gear | 28 Ton Two-Speed, JOST / Other Brand |
| Twist Locks | 12 Sets |
| Front Board | Optional |
| Packing | According to Packing Requirements |
| Painting | Powder Coating |
| Customization | Dimensions, Suspension, Tires, Rims, Front Board and Accessories |

Key Advantages
1. 40-Ton Loading Capacity
The reinforced chassis and 3-axle configuration provide reliable load-bearing performance for 40-ton container and general cargo transportation, making the trailer suitable for commercial logistics and heavy-duty freight operations.
2. Q345 / T700 High-Strength Steel Chassis
The main frame is manufactured from Q345/T700 high-strength steel, providing excellent structural strength, resistance to deformation, and durability during frequent loading and long-distance transportation.
3. Container & General Cargo Compatibility
With 12 sets of twist locks, the trailer can securely carry standard shipping containers while its open flatbed platform also supports steel products, machinery, construction materials, and other general cargo.
4. Reinforced 500 mm Main Beam
The main beam uses a 16 mm upper plate, 10 mm middle plate, and 18 mm lower plate with a total beam height of 500 mm, providing strong structural support under demanding transport conditions.
5. Stable 3-Axle Running System
The heavy-duty three-axle configuration provides effective load distribution and stable road performance for port, highway, and long-distance freight transportation.
6. Flexible Customization
Dimensions, suspension systems, tire and rim specifications, front board, king pin, landing gear, paint, and other components can be customized according to different cargo and market requirements.

Application
The 40 Ton 3 Axle Flatbed Semi Trailer is suitable for logistics companies, container transport operators, freight companies, construction contractors, ports, and industrial transportation businesses.
Typical applications include:
- 20FT and 40FT container transportation
- Port-to-warehouse container logistics
- General cargo transportation
- Steel pipes and structural steel
- Construction and building materials
- Machinery and industrial equipment
- Timber and packaged materials
- Industrial components
- Long-distance commercial freight
The versatile flatbed structure makes the trailer suitable for operations between ports, container terminals, warehouses, logistics centers, factories, construction sites, and inland distribution centers.

Structural & Design Highlights
Reinforced 500 mm Main Beam
The heavy-duty main beam combines 16 mm upper, 10 mm middle, and 18 mm lower plates to improve bending resistance and structural stability under loaded conditions.
12-Set Container Twist Lock System
Integrated twist locks provide secure container connection points and make the trailer suitable for regular container logistics operations.
Q345 / T700 Steel Construction
High-strength steel construction provides a durable chassis capable of handling repeated loading and demanding commercial transport operations.
3 mm Heavy-Duty Flatbed Platform
The steel loading platform provides a durable and versatile surface for containers, machinery, steel products, building materials, and other cargo.
Mechanical / Air Suspension Options
Heavy-duty mechanical suspension is available for demanding operating conditions, while air suspension can be selected according to road conditions and transport requirements.
Optional Front Board Design
An optional front board can be added for general cargo transportation, increasing cargo securing flexibility for different freight applications.








