Lightweight Flatbed Semi-trailer

Lightweight Flatbed Semi-trailer

The lightweight flatbed semi-trailer is an economical general cargo trailer designed for current standard-load transportation conditions. Its main features include lighter weight, lower fuel consumption, strong versatility, and a short payback period. It is the mainstream model for transporting port containers, steel pallets, steel coils, building materials, daily necessities, and large palletized goods. This model is perfectly compatible with 6×4 and 4×2 tractor units and is widely used in cross-border trunk logistics, port transshipment, steel mill transportation, and intercity general cargo distribution. It can handle both paved highways and complex gravel roads on national highways, making it the most cost-effective and widely used basic trailer in the overseas standard-load logistics industry.
The entire vehicle is constructed from T700/Q345B high-strength manganese steel. Utilizing a variable cross-section continuous beam and modular lightweight structure optimization, it eliminates redundant sheet metal, minimizing overall vehicle weight while ensuring structural strength and torsional resistance. Unlike traditional heavy-duty flatbed trailers, this vehicle is specifically designed for standard-load conditions, incorporating lightweight running gear and optimized crossbeam arrangement to achieve a balance between lightweight design and load-bearing capacity. It also supports customized upgrades for multiple components, featuring a simple structure, low failure rate, convenient maintenance, and globally available parts, making it suitable for both fleet bulk purchases and individual driver use.
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Description
Technical Parameters

Standard Configuration

 

1. Load Frame
T700 variable-section full-length main beams use automated submerged arc welding for high torsion & crack resistance. Double-layer reinforced gooseneck prevents sagging on bumpy long hauls. Dense solid I-beams, 14# channel side rails and 2.5mm anti-slip floor balance light weight and rated load capacity.

 

2. Lightweight Body
Optimized hollow cross beams and slim reinforcement plates eliminate excess weight. Evenly fitted side lashing tensioners and cast hooks secure steel, pallets and containers. No extra counterweights cut curb weight vs traditional flatbeds to raise transport revenue.

 

3. Axles & Suspension
Three 13-ton maintenance-free axles (FUWA/BPW/SAF optional) feature long-interval hub service. Standard 3-leaf balanced spring suspension suits high-speed long-distance haulage; air suspension optional for fragile cargo shock protection.

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4. Tyres & Wheels
12 units of fuel-saving 12R22.5 tubeless tyres resist wear and aging, lowering fuel consumption. Heat-dissipating steel wheels reduce blowout hazards. Wide single tyres, forged aluminum rims and alloy spare brackets available for extra weight reduction.

 

5. Towing & Landing Gear
90# JOST forged kingpin fits most tractors, durable for frequent coupling. 28-ton hydraulic landing legs lift smoothly and stabilize the trailer on paved and gravel surfaces under empty or full loads.

 

6. Brake & Electric System
The lightweight flatbed semi-trailer is equipped with a WABCO dual-circuit pneumatic braking system featuring ABS, which ensures balanced braking force distribution, effectively prevents sideslip and jackknifing, and is compatible with the braking systems of various tractor units. The vehicle utilizes a 24V electrical system, dual 7/15-pin waterproof sockets, and full LED lighting with reflective markings; all specifications comply with both EU and domestic export standards, meeting the requirements for all-weather transport operations.

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Optional Upgrade Configurations

Structural Reinforcement

3mm thickened anti-slip baseplate, gooseneck three-layer reinforced structure, integral reinforced crossbeam, rear anti-collision guardrail, thickened high-strength rear bumper

01

Lightweight Upgrade

Forged aluminum alloy wheels, aluminum alloy hydraulic outriggers, aluminum alloy toolbox, wide-body single tires, full vehicle lightweight hollow crossbeam kit

02

Optional Walking Equipment

16-ton heavy-duty axle, air suspension, disc brake axle, long-life lubrication axle, heavy-duty wear-resistant special tires

03

Optional Braking Safety

EBS electronic intelligent braking system, TPMS real-time tire pressure monitoring, brake spray cooling device, anti-roll reinforcement kit, emergency braking assist device

04

Optional Corrosion Protection

Full vehicle sandblasting rust removal, zinc-rich anti-rust primer, double-layer anti-corrosion Topcoat, chassis rust-proof armor, electrophoretic spraying process

05

 

Technical Parameters

 

Item

Parameter

Vehicle Type

13-meter lightweight three-axle flatbed semi-trailer (standard load only)

External Dimensions (L×W×H)

13000mm×2500mm×1550mm

Main Beam Material

T700/Q345B high-strength alloy steel, integrated variable cross-section longitudinal beams

Floor Plate Specification

2.5mm anti-slip patterned steel plate

Axle Configuration

3×13-ton maintenance-free standard load axles (brand optional)

Suspension Type

Lightweight multi-leaf spring balance suspension (air suspension optional)

Tire Specification

12R22.5 low rolling resistance tubeless tires (12 tires standard)

Traction Pin Model

90# JOST High-Strength Forged Traction Pins

Outrigger Specifications

28-ton linked hydraulic parking outriggers

Curb Weight

5.7-6.0 tons (lightest among industry specifications)

Rated Load Capacity

34.0 tons

Maximum Load Capacity

45 tons

Braking System

Dual-circuit air brake + ABS anti-lock braking system

Wheelbase

6780mm + 1310mm + 1310mm

 

Operation and Maintenance Guidelines

 

1. Pre-Departure Inspection
Complete a full trailer inspection before daily operation to ensure zero faults before departure. Check brake air pressure and airtightness of air pipelines to eliminate air leaks. Inspect tires for standard pressure, intact tread and normal wheel temperature. Verify the locking state of the traction pin clips and hydraulic outriggers.
Additionally, check frame welds and cargo floor for deformation or cracks, and confirm all strapping hooks and tensioners are intact. Ensure vehicle warning lights and reflective markings function normally and are undamaged.

 

2. Loading & Unloading Standards
All loading operations must follow center-of-gravity alignment rules. Containers require four-point simultaneous locking, while bulk cargo and steel materials shall be evenly distributed on the deck. Overloading and uneven loading are strictly forbidden.
Coiled steel and irregular heavy cargo must be firmly secured with tensioners, cushion blocks and binding straps to prevent sliding during transit. Loading and unloading must be carried out on flat, hard ground with the tractor handbrake engaged. Avoid concentrated heavy impacts on the floor to protect the trailer's load-bearing structure.

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3. Driving Operation Standards
Adopt graded speed limits for safe driving: maximum 90 km/h for standard loads, and below 80 km/h for heavy steel and container cargo. High-speed sharp turns and emergency braking are prohibited to prevent cargo displacement and vehicle overturning.
Reduce speed in advance on curved, wet and slippery road surfaces. On long downhill sections, control speed via tractor gears and braking, avoiding prolonged use of trailer brakes. Maintain a low constant speed on rough unpaved roads and evade potholes and road protrusions.

 

4. Routine Maintenance & Upkeep
Perform standardized periodic maintenance to extend the service life of the lightweight flatbed semi-trailer. Every 5,000 kilometers, retighten the chassis U-bolts, kingpin base bolts, and landing gear mounting bolts, and remove dirt and debris from the chassis; simultaneously, conduct a thorough inspection of the welds on the main beams, gooseneck, and cross-members to check for cracks.
Replace brake pads and inspect wheel bearings for wear every 100,000 kilometers. Regularly lubricate moving parts such as the kingpin and landing gear hinges. For trailers operating in coastal areas with salt spray or in humid, rainy regions, apply anti-rust coating to the chassis quarterly to prevent corrosion damage.

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