Factory-finished 12.5 m three-axle flatbed semi-trailer shown as a reference configuration. Final deck equipment, axle specification and cargo-restraint arrangement depend on the approved order.
12.5m 3 Axle Flatbed Semi Trailer
The 12.5 m open deck provides practical access for cargo loaded from the side, rear or above. This three-axle flatbed configuration can be matched to the cargo footprint, support points, loading method, restraint plan, tractor and delivery route before production.
Drawing-based configuration: Drawing No. 3-140-141 specifies a 12,500 mm overall length, 2,500 mm overall width and two 1,310 mm adjacent axle spacings for the displayed configuration. Use these dimensions to review cargo fit, tractor coupling and route limits. Final payload, axle ratings, deck structure and equipment must follow the approved quotation and production drawing.
Drawing No. 3-140-141 reference
Final ratings and suspension are project-specific
Configure support and restraint points for the cargo
How Does the Open Deck Help with Loading?
This 3 axle flatbed semi trailer has a flat deck without fixed sidewalls. The open layout gives you room to position cargo and reach it during loading and securing.
Open Deck for Long Cargo
The flat platform leaves room for steel sections, bundled materials and crated cargo. Loads can be positioned along the deck to suit their length and support points.
Side and Overhead Loading
Forklifts can load from either side, and cranes can lower cargo onto the deck from above. There are no fixed sidewalls to open or remove before loading.
Three-Axle Running Gear
Three axles sit beneath the rear of the platform. The outer tyres and wheel hubs are visible from the side for routine walkaround checks.
What Information Defines a 3 Axle Flatbed Trailer Configuration?
Based on CHENLU's over 20 years of manufacturing experience and customer feedback, the final configuration is determined by cargo weight, deck contact points, loading method, restraint scheme, tractor interface, and operating route.
3 Axle Flatbed Trailer 12,500 mm overall length, an 11,985 mm platform-length reference, a 2,500 mm overall width and a three-axle layout. Send the information below so these reference dimensions can be converted into a project-specific quotation.
Cargo Dimensions and Weight
Provide the cargo length, width, height, unit weight and total transport weight. Include the centre of gravity when available, especially for machinery or cargo with uneven weight distribution.
Deck Contact and Support Points
Identify where the cargo contacts the platform, including skids, feet, frames, wheels or dunnage. Concentrated loads must be reviewed separately from evenly distributed cargo.
Loading and Unloading Method
Confirm whether the cargo will be loaded by crane, forklift, loading dock or another approved method. State the access direction, equipment size and required working clearance.
Cargo-Restraint Plan
Specify the proposed chains, straps, binders, blocks, twist locks or other restraint equipment. Include the required attachment locations and loading directions.
Tractor, Route and Destination
Provide the tractor model, fifth-wheel height, coupling details, destination country and normal operating route. Route width, turning conditions and permitted axle loads can affect the final trailer configuration.
3 Axle Flatbed Production Process
12.5m 3 Axle Flatbed Semi Trailer Specifications
CHENLU provides the key dimensions for one 12.5 m three-axle flatbed configuration. The table below gives buyers a clear reference for cargo fit, platform size and axle position before the final order specification is prepared.
| Specification | Drawing No. 3-140-141 Reference |
|---|---|
| Platform and Overall Dimensions | |
| Product configuration | 12.5 m three-axle flatbed semi-trailer |
| Drawing number | 3-140-141 |
| Overall length | 12,500 mm |
| Platform-length reference | 11,985 mm |
| Overall width | 2,500 mm |
| Platform/headboard width reference | 2,490 mm |
| Front headboard | Shown on this reference drawing |
| Front headboard height | 1,130 mm |
| Front overall-height reference | 2,700 mm |
| Front deck-height reference | 1,300 mm |
| Rear height reference | 1,570 mm |
| Three-Axle Running-Gear Layout | |
| Axle arrangement | Three axles positioned beneath the rear section of the platform |
| Adjacent axle spacing | 1,310 + 1,310 mm, centre to centre |
| Front datum to first axle | 6,380 mm |
| Rear overhang reference | 2,300 mm from the third 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 equipment positions are shown between the landing gear and axle group |
Configuration Items Defined for the Cargo and Route
The general-arrangement drawing establishes the trailer geometry. The following items must be selected for the actual cargo, tractor, operating conditions and destination market.
Payload, GVW and Tare Weight
Calculate the rated values from the cargo, load map, complete trailer structure and permitted operating limits.
Deck and Frame Construction
Define the deck plate, main beams, crossmember spacing, support zones and any reinforcement required for concentrated loads.
Axles and Suspension
Specify the axle make, individual rating, suspension system and complete three-axle group arrangement.
Braking and Electrical System
Define the brake layout, air connections, lighting, electrical interface and required ABS or EBS scope.
Kingpin and Tractor Interface
Match the kingpin position, fifth-wheel height, turning clearance and service connections to the selected tractor.
Tyres and Wheels
Confirm the final tyre brand, load index, speed rating, wheel specification and quantity for the approved running gear.
Cargo-Restraint Equipment
Define rated tie-down points, restraint directions, dunnage and cargo-specific securing equipment from the approved load plan.
Destination-Market Equipment
Specify guards, lighting, markings, accessories and documents for the intended country and operating route.
Configure the 3 Axle Flatbed Around Your Cargo
Send the cargo dimensions, unit and total weight, support points, loading method, tractor model and destination route for a complete flatbed trailer specification.
12.5m 3 Axle Flatbed Semi Trailer Walkaround
CHENLU factory walkaround presents a completed 12.5m three-axle flatbed semi-trailer. It allows buyers to review the open platform, chassis proportions, three-axle running gear, landing gear, underdeck equipment and rear arrangement before discussing a similar configuration.
Exterior walkaround of a completed 12.5m three-axle flatbed semi-trailer. The video shows the finished appearance and visible equipment arrangement; it does not establish payload or final component ratings.
Platform and Chassis Proportions
Review the completed platform, chassis depth and available deck area against the intended cargo footprint. Final deck construction and support zones depend on the approved load plan.
Open-Deck Loading Access
The open sides provide access for suitable crane, forklift or overhead loading methods. Loading direction, equipment clearance and cargo support positions should be defined before ordering.
Three-Axle Running Gear
The walkaround shows the position of the three-axle group, wheels and visible undercarriage components. Axle ratings, suspension, brakes and tyre specifications must follow the approved technical schedule.
Landing Gear and Side Equipment
Review the location of the landing gear, side protection and underdeck equipment areas. Component size and position can be adjusted to suit service access and the final trailer configuration.
Rear Equipment and Finish
Rear views allow buyers to check the frame arrangement, underrun protection, lamps and reflective markings. Final lighting and protection requirements depend on the destination market.
Drawing12.5m 3 Axle Flatbed Semi Trailer
This general-arrangement drawing presents the side, top, front and rear views of one 12.5m three-axle flatbed configuration. It provides reference dimensions for the platform, front structure, axle positions and underdeck layout.
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 12.5m flatbed semi trailer, cargo fit, drawing review and quotation requirements.
What is a 12.5m flatbed semi trailer?
It is an open-deck semi-trailer with a reference overall length of 12,500 mm. The flat deck is intended for cargo that can be loaded from the rear, side or top according to the approved loading plan.
What cargo can it transport?
It may be configured for steel sections, pipes, profiles, machinery, construction equipment, timber, packaged materials, pallets and other general cargo when the cargo dimensions, weight distribution, loading method and route are suitable.
What dimensions are shown in the drawing?
The supplied drawing includes a 12,500 mm overall-length reference, a 2,500 mm width note, a 2,490 mm platform reference, a 1,570 mm height reference and a 1,310 mm axle-spacing reference. Confirm the drawing revision, units and final dimensions before production.
What information is needed for a quote?
Send the cargo type, cargo length, width, height, weight, centre of gravity if available, loading method, required deck area, cargo securing method, tractor details, destination route and expected quantity.
What payload can the 12.5m flatbed carry?
The payload must be confirmed for the actual frame, axle group, suspension, braking system, cargo distribution and route. Request the approved quotation and engineering drawing instead of relying on a general payload rating.
Can the deck and running gear be customized?
The proposed scope can include the deck arrangement, axle group, suspension, tyres, wheels, braking, electrical system, cargo-securing equipment and identification items. Each option remains subject to engineering review and quotation confirmation.
How are the final specifications confirmed?
The technical scope should be checked against the approved quotation and engineering drawing before production. Confirm the usable deck area, cargo clearance, axle arrangement, securing points, loaded height and destination requirements in the final project documents.
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