Flat Bed Trailers

China Manufacturer 40FT Flatbed Container Semi Trailer/Truck Trailer

A 40ft flatbed semi trailer with a 3-axle configuration, designed for transporting 20ft and 40ft containers. The chassis uses high-tensile Q345 steel in the main beam and 16# channel steel for side beams, with a 3mm checkered steel floor. It features a mechanical suspension system with 10-piece leaf springs, 12R22.5 tyres from Doublestar, Triangle or Linglong brands, and a JOST 2-inch bolt-in kingpin. It is built to transport containers on routes with uneven or unpaved surfaces.

Use OtherTrailers
Size 12450*2480*1750mm
Suspension MechanicalSuspension
Material Steel
Paint Polyurethanepaint

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Stock number held for this listing: 10503

Side view of a 40ft flatbed semi trailer with 3 axles, showing mechanical suspension and 12R22.5 tyres

Key Benefits

What This Unit Does Well

3-axle layout spreads load across more wheels, reducing axle stress on rough roads
Q345 high-tensile steel main beam increases durability under heavy container loads
Mechanical suspension with 10-piece leaf springs offers reliable performance without air system maintenance
12R22.5 tyres from Doublestar, Triangle or Linglong brands are widely available in Africa and Southeast Asia
JOST 2-inch kingpin ensures compatibility with standard tractor heads and secure coupling
Polyurethane paint provides better corrosion resistance than standard enamel in humid climates

Application Scenarios

Where It Is Used

Container transport between inland depots and coastal ports on roads with gravel or uneven surfaces
Long-haul movement of 40ft containers across regions with limited access to repair facilities
Fleet operations in oil and gas or mining zones where trailers face frequent off-road use
Contractor fleets needing a trailer that can handle 45T payloads without exceeding legal axle limits

Fit

Who It Is For

Fleet owners importing trailers for container transport in markets with poor road infrastructure
Contractors operating in Africa, the Middle East or Southeast Asia where spare parts availability is limited
Logistics companies standardizing on a single trailer model to reduce maintenance complexity
Machinery dealers stocking trailers for resale in regions where container transport is common

Buyer Pain

Problems It Solves

Trailer frame failure on rough roads due to low-grade steel or weak beam design
Frequent suspension breakdowns from air system leaks or compressor failure in hot climates
Inconsistent tyre availability when using non-standard brands or sizes
Kingpin misalignment or failure due to low-quality or mismatched coupling components
Paint degradation from rust and moisture in coastal or tropical environments

Engineering

Technical Features

3-axle configuration with FUWA, BPW or HJ brand axles rated at 13T or 16T
Main beam made from high-tensile Q345 steel, 14mm top flange, 500mm height, 16mm bottom flange
Side beams constructed from 16# channel steel (Q235)
Cross members from 10# channel steel (Q235)
Floor made of 3mm checkered steel plate
Mechanical suspension with 10-piece leaf springs, 90mm x 13mm
12R22.5 tyres from Doublestar, Triangle or Linglong brands, 12 tyres total
Heavy-duty landing gear with two-speed manual operation
WABCO RE6 relay valve and T30/30 spring brake chamber for braking system
40L air tanks and optional ABS
LED lighting with 8 side lights, 2 rear lights, and 2 width lamps
Polyurethane paint after sandblasting and primer coating

Specification

Specification Table for This Listing

Taken from the supplier specification we hold. Anything not listed here is confirmed in writing before order rather than assumed.

Specification of China Manufacturer 40FT Flatbed Container Semi Trailer/Truck Trailer
Use	OtherTrailers
Size	1245024801750mm
Suspension	MechanicalSuspension
Material	Steel
Paint	Polyurethanepaint
Axle	FUWA/BPW/HJoptional
Tire	12R22.5Doublestar/Triangle/Linglongbrand
Function	Transport20ft40ftcontainer
Type	Semitrailer
Certificate	CCCISO9001:2008BVSGS
Trailer Model	40FT Flatbed Semi Trailer
Axle Count	3
Maximum Payload	45 T
Dimensions L x W x H	12450 x 2480 x 1750 mm
Main Beam Material	Q345 high-tensile steel
Side Beam Material	16# channel steel Q235
Floor Material	3mm checkered steel plate
Suspension Type	Mechanical suspension with 10-piece leaf springs
Axle Brands	FUWA / BPW / HJ (optional)
Axle Rating	13T or 16T
Tyre Size	12R22.5
Tyre Brands	Doublestar / Triangle / Linglong
Kingpin Size	2" (50mm) or 3.5" (90mm)
Kingpin Brand	JOST
Landing Gear	JOST brand, two-speed manual, heavy duty
Braking System	WABCO RE6 relay valve, T30/30 spring brake chamber

Materials

Materials and Build

Q345 high-tensile steel for main beam
Q235 channel steel for side beams and cross members
3mm checkered steel plate for floor
12R22.5 radial tyres from Doublestar, Triangle or Linglong
JOST 2-inch bolt-in kingpin
Steel wheel rims (9.0-22.5)
Polyurethane paint with primer coat

Process

How an Order Is Handled

You provide the container type, route conditions, and any special handling needs
We confirm the axle brand (FUWA/BPW/HJ), tyre brand, and kingpin size based on availability
You approve the final specification sheet including paint colour, axle rating, and lighting layout
Trailer is built, tested for structural integrity and brake function, and photographed
We book RoRo or bulk cargo shipment and issue export documents including COO and commercial invoice

Quality Control

Checks Before Loading

Chassis number and axle brand are photographed and matched to the approved spec sheet
Brake system and suspension are tested under load before loading
Paint, welds, and floor integrity are inspected for transport damage at the yard
Third-party inspection by SGS, BV or your agent is available upon appointment
Loading and lashing photos are sent before the vessel departs

Customisation

What Can Be Changed

Axle brand: FUWA, BPW or HJ (as specified)
Tyre brand: Doublestar, Triangle or Linglong
Kingpin size: 2" (50mm) or 3.5" (90mm)
Paint colour: Customised to your request
Lighting configuration: Add or remove side lights or width lamps
Additional accessories: Tool box, spare tire carrier, crank, shaft head wrench

Honest Comparison

How It Compares With the Alternatives

2-axle flatbed trailer	The 3-axle model supports higher payloads and reduces axle load per wheel, but costs more to maintain and has higher fuel drag
Air suspension trailer	Mechanical suspension avoids compressor and air line maintenance in dusty or hot climates, but offers less ride comfort on rough roads
Lower-grade steel trailer	Q345 steel main beam resists deformation under heavy loads, but costs more than standard Q235 steel

Use Guide

Using It Well

Replace brake chamber diaphragms and air tank drains annually in humid environments
Use only approved tyre brands and maintain correct inflation pressure to avoid premature wear
Clean the floor and check for cracks in the checkered plate after each heavy load cycle

Photographs

More Views of This Unit

Photographs held for this listing. Current yard photographs of the specific unit you shortlist are taken fresh before any balance is paid.

Front view of the trailer with JOST 2-inch kingpin and landing gear in place

Rear view showing the twist lock system and LED lighting setup

Top-down view of the flatbed floor with checkered steel plate and container securing points

Close-up of the main beam with Q345 steel and welded joints

Detail of the leaf spring suspension and axle assembly

Source Specification

Manufacturer Text We Hold for This Listing

China Manufacturer 40FT Flatbed Container Semi Trailer/Truck Trailer Product Description 3 AXLE FLATBED SEMI TRAILER Tare weight 6 000kg Size 1 25 00mm*2500mm* 15 00mm P ayload 45T Main beam H eavy duty and extra durability designed I beam; opting for high tensile steel Q345, welded by automatic submerged-Arc processes. Top flange 14mm,width140mm;Middle Flange 8mm height 500mm;bottom flange16mm,width 140mm S ide beam 16# channel steel(Q235) C ross member 10# channel steel(Q235) F loor 3mm checkered plate Axle 3 /4 A xle FUWA /HJ/BPW brand 13T /16T Suspension Mechanical suspension American type local brand or Air suspension L eaf spring 10pcs *90*13mm Tire 12R22.5 D ouble star /Triangle brand 12pcs Wheel rim 9.0-22.5 better brand 12pcs Kingpin JOST brand 2" bolt-in king pin Landing gear JOST brand two-speed, manual operating,heavy duty landing gear 2 8 T T wist lock 4/812pcs Braking syste

Reproduced from the supplier specification. Figures are confirmed in writing on the proforma invoice before any deposit.

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