CHENLU tri axle flat top semi trailer with a level deck, tubular side gates, landing gear, under-deck storage and rear lighting. Final dimensions and equipment follow the selected cargo and Australian operating combination.
Tri Axle Flat Top Semi Trailer with Tubular Side Gates
This CHENLU tri axle flat top semi trailer combines a level, full-length deck with tubular side and end gates. The open platform supports side, rear and overhead loading for bundled materials, fabricated products and general freight when used with the correct cargo-restraint system.
Configure for the job: Start with the cargo and operating combination. Provide the cargo dimensions, transport weight, loading method, prime mover details, destination and intended trailer combination. Gate design, deck equipment and load-restraint points are then specified in the quotation.
Final axle and suspension specification by quotation
Side, rear or overhead loading access
Opening and removal arrangement by configuration
Why Choose a Tri Axle Flat Top Trailer with Side Gates?
This configuration combines a single-level loading deck with tubular side and end gates. It gives operators clear access to the platform while creating a defined cargo area for bundled materials, fabricated products and general freight. The gates support cargo organisation but do not replace a rated load-restraint system.
A Level Deck for Side, Rear or Overhead Loading
The flat top deck can be approached from the sides, rear or above. This allows the loading method to be planned around the cargo, whether it is handled by forklift, crane, dock or other approved equipment.
A Defined Perimeter Around the Loading Platform
The tubular side and end sections create a clear boundary around the deck and provide access points for the selected cargo. Their height, opening arrangement and removable sections should be specified in the quotation.
Match the Axles and Suspension to the Route
The photographed flat top semi trailer uses a tri-axle layout beneath the rear of the platform. Axle ratings, suspension, tyres and brakes should be selected for the cargo weight, prime mover, operating combination and destination route.
Landing Gear and Under-Deck Storage
Landing legs support the uncoupled trailer, while the under-deck boxes provide dedicated storage away from the loading surface. The final specification should identify their size, position, clearance and included accessories.
How Should This 3 Axle Flatbed Semi Trailer Be Matched to the Cargo?
This 12.5 m tri-axle flatbed uses an open loading platform and a front headboard. The final configuration should be matched to the cargo footprint, transport mass, loading method, tractor interface and destination route.
Drawing No. 3-140-141 provides the dimensional and axle-layout reference for this configuration. Rated payload, structural capacity and the final function of the headboard must follow the approved load calculation, restraint plan and technical schedule.
| Buyer Input | Why It Affects the Trailer | Details to Send |
|---|---|---|
| 01 Cargo Size and Support Footprint | Cargo length, width and support positions determine platform fit, loading direction and the structural zones that carry concentrated reactions. | Cargo drawing, overall dimensions, contact area, support-point spacing and any overhang requirements. |
| 02 Transport Mass and Centre of Gravity | The total mass and centre of gravity affect kingpin reaction, tri-axle group loading, frame calculation and the permitted cargo position on the deck. | Cargo mass, centre-of-gravity location, weight distribution and the mass of any cradles, pallets or support frames. |
| 03 Loading and Unloading Method | Crane, forklift, dock or side-loading access can change the deck arrangement, edge clearance, equipment position and required working space. | Loading equipment, approach direction, lifting points, forklift wheel loads and loading-site restrictions. |
| 04 Headboard and Cargo-Restraint Plan | The front headboard is part of this drawing, but it should not be treated as a rated restraint system unless its design loads and attachment details are documented. | Required headboard function, lashing method, chain or strap directions, attachment points and applicable restraint criteria. |
| 05 Tractor and Coupling Interface | Tractor geometry affects kingpin compatibility, fifth-wheel height, front swing clearance and the working attitude of the flatbed. | Tractor make and model, fifth-wheel height, kingpin requirement, cab clearance and air and electrical connections. |
| 06 Destination Route and Operating Conditions | Route limits, turning space, road surface and local mass rules can affect axle specification, suspension, tyres, braking equipment and the final operating envelope. | Destination country, intended routes, road conditions, dimensional limits, axle-mass requirements and delivery-site access. |
12.5 M TRI-AXLE FLATBED WITH HEADBOARD
3 Axle Flatbed Semi Trailer Specifications
Reference dimensions for the 12.5 m tri-axle flatbed semi-trailer with front headboard. Values not stated on the drawing are separated from the dimensional data and remain subject to the final technical schedule.
| Specification | Drawing Reference |
|---|---|
| Product and Platform | |
| Product type | 12.5 m three-axle flatbed semi-trailer with front headboard |
| Drawing number | 3-140-141 |
| Overall length | 12,500 mm |
| Main platform length reference | 11,985 mm |
| Overall width | 2,500 mm |
| Platform and headboard width reference | 2,490 mm |
| Overall height with headboard | 2,700 mm |
| Headboard height | 1,130 mm |
| Front coupling-height reference | 1,300 mm |
| Rear vertical reference | 1,570 mm |
| Running Gear and Chassis Layout | |
| Axle arrangement | Three axles beneath the rear section of the platform |
| Adjacent axle spacing | 1,310 + 1,310 mm, centre to centre |
| Front-to-first-axle reference | 6,380 mm from the front drawing datum |
| Rear overhang reference | 2,300 mm from the third axle centre to the rear datum |
| Front kingpin-position reference | 1,200 mm from the front drawing datum |
| Tyre notation | 11R22.5 |
| Landing support | Dual landing legs shown ahead of the axle group |
| Under-deck equipment | Side-mounted storage and service-equipment positions shown |
| Front structure | Full-width headboard shown at the front of the loading platform |
Items Defined for the Cargo, Tractor and Destination
The general arrangement drawing does not state the following ratings. They should be listed in the approved quotation and component schedule.
See the Completed 3 Axle Flatbed Semi Trailer
This factory walkaround presents the completed 3-axle flatbed semi-trailer after assembly and finishing. The video provides a closer view of the open loading deck, 3-axle running gear, mechanical suspension, landing gear, rear structure and under-deck equipment on this production configuration.
Factory walkaround of the completed 3-axle flatbed semi-trailer. The video presents the finished structure and visible equipment; final dimensions, payload and component ratings follow the approved technical documents.
Completed Structure and Finish
Review the completed chassis, open flatbed platform, paint finish and overall equipment layout after final assembly.
Open Flatbed Platform
See the full loading deck, edge structure and available platform area used as the basis for cargo-position and loading-method planning.
3-Axle Running Gear
The walkaround shows the complete five-axle group and dual-tyre arrangement installed beneath the rear section of the trailer.
Mechanical Suspension Layout
Closer views present the mechanical leaf-spring suspension, axle connections and running-gear arrangement used on this configuration.
Landing Gear and Under-Deck Equipment
Review the landing legs, storage equipment and service components positioned below the main loading platform.
Rear Structure and Road Equipment
See the completed rear frame, lighting, reflectors, side protection and finishing details included on the displayed trailer.
3 Axle Flatbed Semi Trailer Drawing
Use the general arrangement drawing to review the platform envelope, kingpin position, 3-axle group, rear overhang and under-deck equipment before matching the trailer to the cargo and tractor. The dimensions shown apply to this specific flatbed configuration.
Optional Parts And Accessories
Semi-Trailer Axle Support Plate
American-Style Axle
Trailer Suspension Parts
Trailer Suspension Support Leg
WABCO Brake Valve
FUHUA (TUWA) Trailer Axle
German-Style Trailer Suspension
BPW Trailer Axle
Why Trust Chenlu?
Factory-Direct Manufacturing
CHENLU presents its own semi-trailer manufacturing base with modern workshops, CNC cutting, automatic welding lines and painting facilities. This supports direct communication between the buyer, engineering team and production team.
OEM/ODM Configuration Review
The published customization scope includes axle number and load configuration, suspension type, ride height, frame reinforcement, deck requirements, branding, colour and logo. The final scope should be confirmed against the cargo, tractor and destination route.
Process-Based Quality Control
The factory workflow covers material preparation, main-beam welding, frame assembly, surface treatment, painting, final assembly, inspection and testing. Quality checks should be recorded against the actual project configuration before delivery.
B2B Export and Project Support
CHENLU works with fleet owners, contractors, distributors and project buyers across logistics, construction, mining and heavy-equipment transport applications. The quotation should confirm the tractor interface, route, axle-load requirements and local permits.
Meet Chenlu and Review the Manufacturing Process
Customer visits support direct communication between buyers, engineering teams and the manufacturing department before the final configuration is confirmed.
Follow the Project from Delivery to Customer Feedback
Use approved delivery photos, project records and customer comments to present the completed communication and delivery process.
Publish the Original Customer Message with Permission
Add an approved customer comment, delivery record or project feedback here after the customer confirms the wording and image usage.
Approved delivery photo or project record.
Original customer message with permission.
Approved feedback about communication and support.
FAQ
Answers to common questions about the tri axle flat top semi trailer, tubular side frames, Australia-market configuration and quotation requirements.
What does “flat top trailer” mean in Australia?
Australian suppliers commonly use “flat top” and “flat deck” for trailers built around an open loading platform. This page uses that local buying language while retaining “semi trailer” to describe the photographed tractor-coupled product family.
Are the tubular side frames removable truck gates?
The supplied photos confirm tall tubular side and end frames, but they do not confirm whether any section opens, folds or can be removed. If removable truck gates are required, the hinge, locking, retention and handling arrangement must be included in the approved design.
Is this a stock-crate or livestock semi trailer?
No livestock use is claimed for this configuration. A stock-crate trailer requires a cargo-specific design that may include animal-loading, ventilation, divider, floor, drainage and welfare considerations that are not established by the supplied photographs.
Can a tarp or weather cover be added?
A cover can be reviewed as a project option. The cargo height, access requirements, frame geometry, fastening method, water management and operating clearances should be confirmed before the cover package is designed. The visible upper tubular frames are not proof of a completed tarp system.
What payload can the tri axle trailer carry?
Payload has not been approved for publication. It depends on the final chassis, axle group, suspension, tyres, brakes, trailer tare mass, tractor combination, cargo distribution and the applicable Australian mass rules.
Is the trailer ADR compliant and ready for registration in Australia?
This page does not make that claim. The approved design must be reviewed against the relevant Australian Design Rules and the appropriate Register of Approved Vehicles pathway, followed by any applicable state or territory registration and inspection requirements.
What information is needed for a quotation?
Provide the cargo type and mass, cargo dimensions, loading method, required side or end access, tractor model and fifth-wheel height, Australian state or territory of operation, route conditions, restraint requirements, preferred frame function, quantity, Incoterm and target purchase date.
Related Products
Flatbed Semi Trailer
100 Ton 5 Axle Flatbed Semi Trailer with Mechanical Suspension
View Product ↗
Flatbed Semi Trailer
100 Ton 5-Axle Flatbed Semi Trailer for Heavy Cargo Transport
View Product ↗
Flatbed Semi Trailer
12.5 m 3 Axle Flatbed Semi Trailer | CHENLU
View Product ↗
Fence Cargo Trailer
12.5 m 4 Axle Fence Cargo Semi Trailer for Tanzania
View Product ↗
Container Chassis / Skeleton Trailer
12.5m 2 Axle 40ft Skeleton Semi Trailer
View Product ↗
Flatbed Semi Trailer