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40ft 3 Axle Flatbed Semi Trailer with Air Suspension

Production Time: Approximately 30 Working Days 
Packaging: SKD/CKD 
Shipping Method: Sea/Land 
Material: Q345B (Customizable) 
Axles: 1, 2, 3 (Customizable) 
Warranty: 1 Year Warranty for Main Structure 
Brand: Vehicle Master 
Size: 40ft
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Introduction of 40ft 3 Axle Flatbed Semi Trailer with Air Suspension

As the largest and most advanced semi trailer manufacturer in Shandong Province, Vehicle Master is also the leading manufacturer especially for 40ft 3 axle flatbed semi trailer with air suspension or common mechanical suspension. Due to the structure of this type of semi trailer, the 40ft 3 axle flatbed semi trailers can be used for various purposes and industries. For instance, they can transport pretty high volume of boxes, packages, iron rods, tubes, equipment, and even shipping containers if equipped with the right number of twist locks.

A Closer Look at 40ft 3 Axle Flatbed Semi Trailer with Air Suspension    
Specifications for 40ft 3 Axle Flatbed Semi Trailer with Air Suspension

Overview & Structure


12,500x2,550x1,500 (mm)

Main beam:

Q345B “H” beam (T700 can be optioned)

Through beam:

W shape

Side beam:

#16 channel steel

Curb Weight:

6.6T approximately


35T approximately

Platform floor board:

3mm checkered

Front board:



Powder spraying and coating (KTL is also available)

Welding Standard:

Welding robot and manual welding


Per requirement

Main Parts


Air suspension (one or two retractable axles can be optioned)


3*American type 10T axles

Braking System:

Braking chamber*6





Landing Gear:


King pin:

#50 or #90 bolted type

Twist lock:

8 sets or 12 sets

Electrical System

12V 7-way socket; front marker lamp: white; side marker lamp: white & red; rear lamp: red; turning signal lamp: amber; wiring: electric cable protected by PVC conduit on main frame


Toolbox, spare tire carrier


Different Needs for 40ft 3 Axle Flatbed Semi Trailer

  • Main Frame Difference

    The main frame is the backbone for flatbed semi trailer and any other semi trailer. It’s the part that takes on all the weight of the goods loaded on to the trailer. The structure of semi trailer main frame is usually the “H” beam. Different amount of load capacity requirements should always determine the thickness of upper, middle, and lower plates. With years of experience in the industry, Vehicle Master has its own steel factory and manufactures its own main frame. This is to maintain and guarantee the high quality for not just the main frame, but the quality of the entire trailer such as the 40ft 3 axle flatbed semi trailer.


  • Dimension Difference

    For any type of semi trailers, the specification requirement can be very different due to differences in their markets and the conditions theses trailers are used under. It’s also the case for flatbed semi trailer. In some countries, 42ft or 45ft may be the popular length. In other countries, 40ft is most commonly used for transportation. The height of the flatbed trailer, more specifically the height of the king pin also varies depending on the tractor trucks that are used to pull the semi trailer in every country. The HOWO brand tractor trucks have become one of the top brand preferred by many customers thanks to its great quality and value. Therefore, the height of the saddle on these trucks have become the norm to match when customers place orders for their flatbed trailer with semi trailer manufacturers such as Vehicle Master.


  • Suspension Difference

    The common mechanical suspension option is quite popular for most of the markets. It’s rigid and can take on heavy weight of goods under rough conditions. For example, people from African countries usually option for mechanical because of the rough roads the 40ft 3 axle flatbed will travel on in their area.

    For customers from countries such as Saudi Arabia, very often air suspension with one or two lifted/retractable axles is much preferred. The road in Saudi Arabia is much smoother so they have the luxury to pursuit ways to extend service life for the tires and even the whole trailer with options such as lifted/retractable axle for the trailer suspension.



Vehicle Master is China's leading provider of semi trailer solution for transportation and logistic industry. The company has been awarded Provincial Municipal Meritorious Enterprise, Star Enterprise and Advanced Enterprise.




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