Factory photos of a representative white four-axle flatbed semi trailer with an open deck. The images document the four-axle group, landing gear, rear structure and side equipment; final component ratings and cargo-securing equipment depend on the approved project configuration.
4 Axle Flatbed Semi Trailer for Long and Heavy Cargo
This 4 axle flatbed semi trailer provides an open loading platform for long steel sections, pipe bundles, industrial components and machinery with defined support positions.
The four-axle layout offers additional load-distribution positions beneath the rear platform. It does not establish the payload by itself. Cargo placement, kingpin reaction, axle-group loads, deck support and turning clearance must be reviewed together.
Configuration basis: Provide the cargo dimensions, operating weight, centre of gravity, support footprint, loading method, tractor specification and destination route. Final payload, axle ratings, deck capacity and running-gear specifications must follow the approved drawing and quotation.
How Is a 4-Axle Flatbed Matched to the Cargo?
A four-axle layout becomes useful only when the cargo support points
are matched to the deck structure and axle group. The load map must
identify the cargo weight, centre of gravity, contact areas and reaction
transferred to the tractor.
The longer axle group can also affect tyre scrub, turning space and
access in loading yards. These conditions should be reviewed before
the platform and running gear are finalized.
Axle Group Matched to Load Position
Four axle positions provide a longer load-distribution zone beneath the rear platform. Engineering should calculate the reaction at the kingpin and across the complete axle group from the proposed cargo position.
Final axle ratings, spacing and permitted loads must match the selected suspension, tyres and destination route.
Deck-Edge Equipment Specified by Use
The platform edge can include reflectors, side protection, mounting points and project-specific securing equipment. Each fitting should be identified in the quotation according to its actual function and rated direction.
A visible deck fitting must not automatically be treated as a container lock or rated tie-down point.
Running Gear Selected as One System
The axle group, suspension, braking components, tyres and underframe connections must be specified as one running-gear package. Component selection depends on the operating mass, axle reactions, road conditions and destination requirements.
The supplied close-up confirms the installed arrangement, but final ratings and specifications must come from the approved component schedule.
4 Axle Flatbed Semi Trailer Specifications
The table combines dimensions from Drawing No. 3-43 with the configuration items required for a final quotation. It represents one 14 m four-axle flatbed layout; deck length, axle position and equipment can be configured for the cargo, tractor and destination market.
| Specification | Drawing No. 3-43 Reference |
|---|---|
| Reference Configuration | |
| Product type | Four-axle flatbed semi-trailer |
| Drawing number | 3-43 |
| Overall length | 14,000 mm |
| Platform length reference | 13,920 mm |
| Overall width | 2,500 mm |
| Platform width reference | 2,490 mm |
| Front headboard | Full-width front headboard shown on this reference configuration |
| Headboard height | 1,300 mm |
| Front coupling/deck-height reference | 1,240 mm |
| Rear vertical/deck-height reference | 1,500 mm |
| Running Gear and Chassis Layout | |
| Axle arrangement | Four axles positioned beneath the rear section of the platform |
| Adjacent axle spacing | 1,310 + 1,310 + 1,310 mm, centre to centre |
| Front datum to first axle | 8,270 mm |
| Rear overhang reference | 1,000 mm from the fourth axle centre to the rear datum |
| Tyre notation | 11R22.5 |
| Landing support | Dual landing legs located ahead of the axle group |
| Underdeck equipment area | Side-mounted storage and service positions are shown in the drawing |
Items Defined for the Cargo and Destination
These values are not established by the axle count or general-arrangement drawing. They are selected and documented for the approved production order.
Payload and Tare Weight
Calculated from the cargo, load distribution, frame design and complete component specification.
Axle Make and Rating
Specify the axle brand, individual rating and complete four-axle group arrangement.
Suspension System
Select the suspension layout and rated components for the load, road conditions and service plan.
Braking and Air System
Define the brake specification, air-line arrangement and required ABS or EBS scope.
Deck and Frame Specification
Confirm the deck construction, main-beam design, crossmember layout and surface treatment.
Kingpin and Tractor Interface
Match the kingpin position, coupling height, turning clearance and connections to the tractor.
Cargo-Restraint Equipment
Define the rated tie-down points, restraint method and any cargo-specific support equipment.
Destination-Market Equipment
Specify lighting, markings, guards, tyres and other items required for the intended market.
Need a Four-Axle Flatbed Matched to Your Cargo?
Send the cargo dimensions, total mass, loading method, tractor details and delivery route for a project-specific flatbed trailer specification.
4 Axle Flatbed Semi Trailer Video
This video presents a completed four-axle flatbed semi-trailer from multiple exterior angles. Buyers can review the open platform, front headboard, four-axle running gear and visible underdeck equipment before discussing a project-specific configuration.
Completed-trailer display showing the overall exterior and visible configuration. This is a product walkaround, not a loading test, payload demonstration or operating guide. Final equipment must follow the approved order specification.
Overall Trailer Profile
The walkaround shows the proportions of the platform, the front headboard and the rear structure. Use this view to compare the displayed configuration with the intended cargo and operating route.
Open Flatbed Platform
The open deck provides side access for different loading methods. Final usable length, width, support areas and cargo-restraint locations must be defined in the approved drawing.
Four-Axle Running Gear
Four axle positions are visible beneath the rear section of the platform. Axle make, individual rating, suspension specification, tyre selection and allowable load distribution remain project-specific.
Underdeck Equipment Layout
The video provides a closer view of the landing gear, side protection and visible storage or service areas. The final position and specification of each component should be listed in the technical proposal.
Configuration Details to Review
Use the completed-trailer video to identify required changes to the headboard, deck equipment, restraint points, storage, lighting and other visible components before the production configuration is approved.
4 Axle Flatbed Semi Trailer Drawing and Key Dimensions
Drawing No. 3-43 presents the side, top, front and rear views of one 14 m four-axle flatbed configuration. Use the drawing to review the platform envelope, front headboard, axle spacing and tractor interface before preparing the final production drawing.
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 four-axle flatbed semi trailer, white side-panel configuration, cargo fit, securing equipment and quotation requirements.
What is a 4-axle flatbed semi trailer? +
It is an open-deck semi-trailer with four axles. The four-axle layout, platform size, suspension, side equipment and securing system should be selected around the cargo, tractor and destination route.
What cargo can this four-axle flatbed trailer carry? +
The configuration may suit steel products, pipes, timber, construction materials, machinery, containers or other general heavy cargo.
Confirm the cargo dimensions, weight, load centre and securing method before the trailer is selected.
What is confirmed by the supplied product photos? +
The supplied photos show a white trailer finish, four visible axle positions, side panels, reflective markings and underframe components.
They do not confirm payload, dimensions, tyre specifications, suspension, brakes or certifications.
Can the side panels be removed or adjusted? +
The side-panel configuration must be confirmed by the drawing or quotation.
Ask the factory to confirm whether the panels are fixed, folding or removable, together with their height, material and intended function.
Can the trailer carry containers? +
It can be configured for container transport only when the approved design includes compatible twist locks and the required lock positions.
Confirm the container size and lock arrangement before ordering.
What payload can the four-axle trailer carry? +
There is no universal payload figure for every four-axle flatbed semi trailer.
The rated payload must be confirmed from the approved drawing, quotation, axle specification, tractor interface and destination route.
What information is needed for a quotation? +
Send the cargo type, operating weight, overall length, width, height, load centre if available, loading method, securing method, tractor details, destination country and intended route.
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