Container Flatbed Trailer

Container flatbed trailers are generally used to transport containers or bulk cargo. When there is not so much container business, many people will choose to buy flatbed trailers together to earn more money by transporting bulk cargo.

How to choose flatbed semi trailers?

  • 1. Transport: We generally use platform semi trailers to transport containers or other goods. We need to determine whether flatbed semi trailers can do our job. You can tell us the goods you need to transport. We will provide you with professional advice.
  • 2. Local laws and regulations: whether the local country has a weight limit, if the country has a weight limit, we can consider using some flatbed semi trailers with smaller cargo or aluminum alloy.
  • 3. Roads: How are the roads in your country? For many inexperienced people who may not know, if the country’s road conditions are not good, we need to make adjustments to ensure that the flatbed semi trailers can work better. In this regard, PANDA Mech does a good job and can always provide some professional advice.
  • 4. Long-term use: Some customers tell us in the communication that the work may only last for a while, then we will relatively recommend the use of some cost-effective configuration, if some need to be used for a long time, we will relatively recommend some better quality configuration, to ensure that the flatbed semi trailers life longer.

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How to choose a flatbed trailer manufacturer?

  • 1. Whether it is a factory or not: this is a very important criterion, there are many traders in China, but if we buy a flatbed semi trailer from a trader, it will cost us more, we suggest you choose to buy directly from the factory, PANDA Mech is a factory direct sales, there is no middleman to earn the price difference.
  • 2. Years of establishment: a company’s years of the establishment can side reflect the strength of the company, PANDA Mech has been established for more than 20 years, technology has been at the forefront of the world, every year will invest a lot of human and material resources in research and development to improve.
  • 3. Look at the company’s major customers: a company how has major customers are more well-known companies in the industry, it also means that this company is trusted by major customers, but also means that this company is very worthy of cooperation.
  • 4. Product videos: if a company puts a lot of effort into its product videos, it also means that it is willing to put more effort into its products and it is a trustworthy company.
  • 5. Staff: When communicating with the business, whether the other party is professional, the business level of a company’s personnel, is also a side understanding of whether this company is professional, if this company can provide you with professional services and advice on your problems, then it must be right to choose them.

So when you buy container flatbed trailers in China, PANDA Mech is the best choice for you. Request a Quote⇒


The introduction of Panda Flatbed Semi-trailer

A flatbed semi-trailer has no railings on the vehicle-mounted part and is widely used for medium and long-distance freight transportation, including bagged cargo, bulk cargo, containers, tanks, and so on.

Its load capacity ranges from 30 tons to 80 tons, and the trailer can determine the length according to the specific use requirements of our customers. And currently, 40 feet is the most widely used.



We adopt high-strength international Steel in its moving structure; With the lightweight, it can maintain anti-distortion, anti-earthquake, anti-turbulence to meet the different road carrying capacity needs. 

A flatbed semi-trailer is a beam-passing structure, and a longitudinal beam adopts flatbed or gooseneck type. The flatbed trailer height of the plate is from 400mm to 550mm, and the longeron adopts the submerged arc weld pass, and the frame is processed by shot blasting.

The beam crosses the longeron to weld all together. The side of the platform is equipped with locks, tighteners, hooks, and other parts, which can meet users’ needs to fix different goods for transportation.

It needs to be equipped with different spare parts when transporting various goods. 



Containers are the most commonly transported products by flatbed trucks, and if you are a container carrier or someone engaged with port logistics, your flatbed truck must need many locks to secure your containers.

For a 40 feet platform semi-trailer, 12 sets of locks are the most practical design, which can meet the demand of transporting two 20 feet containers simultaneously.

flatbed smei trailer
flatbed semi-trailer



flatbed trailer drawing


Different types of flatbed semi-trailer

Sometimes, you will face two difficulties in the process of transportation when flatbed trucks are used to transport steel pipes, steel bars, woods in long strips, and other goods. 

timber semi trailer
timber semi-trailer

1. These bulk goods are not easy to be stacked on the trailer, and if they are not fixed well, it is easy for the goods to fall off the truck because of bumps during transportation.

2. It is hazardous when the sudden brake during transportation will cause these goods to rush forward. In this case, you can choose a flatbed truck with a front baffle and plug-in instrumentation, while the rugged rubber attached to the side of the plug-in instrumentation can prevent the friction and impact of steel products on this instrumentation.

And these are removable so that you can meet the needs of transporting different products. If you need to transport some bulk/bagged goods, such as bagged cement, bagged grain, etc., you need to use ropes to fix these.

flatbed trailer with front board


How to purchase a platform semi-trailer?

1. Carrying capacity. As carrying capacity is one of the most critical data to confirm whether a semi-trailer is suitable for you. It would be best to clarify to the supplier how much your maximum load is during your transportation. It is the most critical data that affects the flatbed semi-trailer’s design. When the customer requires a relatively large full bag, we will strengthen the design of our flatbed semi-trailer, such as in the beam, gooseneck, suspension, and axle. 

2. Use of road conditions: It will also affect the supplier’s design of the flatbed semi-trailer. In some roads with good conditions, the supplier can make the flatbed semi-trailer lighter so that it can save the consumption of raw materials and then reduce the price of the trailer, as well as it can reduce the weight of the trailer to transport more goods under the limited load requirement.

In contrast, in some areas with worse road and bridge conditions and even some places that have no roads, such as Madagascar, Congo, Gabon, if you want to drive our trailer in such road conditions, you need to strengthen the gooseneck, beam, lugs, and other parts.


The impact of the suspension system on the use of the trailer

The type and quality of the suspension system and tires can significantly affect the use and service life of the trailer. The suspension can connect the tires and the body, and almost all the control of the tires and the body is complete by the break. In regular use, the type and quality of the suspension affect the handling response characteristics, driving stability, and so on.

The flatbed truck can say that everything related to the body dynamics will be related to the suspension. Usually, semi-trailers are equipped with American-type suspension mostly, and the lighter weight can support more load capacity.

However, when you suffer from some deplorable road conditions, you can choose German-type rest, which will have more load capacity than American suspension.

Leaf springs



  • (1) Sophisticated technology: the main parts of the trailer are processed by advanced equipment, the longeron is welded by the automatic tracking submerged arc welding machine imported from the United States; the trailer parts are shot blasted, which dramatically enhances the adhesion of paint, and the assembly parts are assembled after the painting process.
  • (2) Frame: The frame adopts a 16Mn steel plate and high-strength steel plate with welded longeron and integral crossbeam welded into a spatial frame structure. With a sound system, the trailer has a more substantial carrying capacity.
  • (3) Axle: The axle adopts imported or domestic high-quality brand axle and optional ABS anti-lock braking system from famous brands at home and abroad to improve driving safety.
  • fuwa-axles
  • (4) Suspension system: Adopting a unique new type suspension system with high strength and strong impact resistance; the patented tie rod fixing structure ensures that it will not loosen during the frequent bumps in operation, effectively reducing tire wear extending its service life.
  • (5) Toolbox: waterproof, large volume detachable.
  • tool-box
  • (6) Frame: The longeron is made of hot-rolled section steel or welded manganese steel and is fused with the crossbeam and section steel members to form a frame structure. With reasonable structure, balanced overall strength and stiffness, high carrying capacity, and good elasticity, so it will never deform.
  • (7) Carriage board: Welded by an anisotropic steel frame, tile-ribbed compartment board, and steel plate molded column with an excellent manufacturing process and reasonable structure.
  • (8) Braking system: Adopting safe and reliable double-loop air-break brake and installing a quick-release valve in the system, the sub-pump can be used to return quickly when you are braking.


The caution of Panda Flatbed Semi-trailer

  • (1) The traction height, traction pin size, and front turning radius of our semi-trailer must match the tractor (and not all tractors and semi-trailers can be connected for use).
  • We should operate the outrigger lifting mechanism to adjust to the height of the trailer that can smoothly connect with the saddle of the tractor to fit. Generally, the size of the traction plate is smaller, 1 ~ 3 cm, than the saddle.
  • The operation handbrake device will contribute to semi-trailer braking to prevent the tractor from bending backward when the tractors are connecting.
  • It would be best to choose a solid and flat road during the traction process of semi-trailers. When you park the tractor, the centerline of the tractor and semi-trailer should be consistent. In general, if the centerline offset is less than 4 cm, the driving hours will be limited to 7 hours.
  • (2) The tractor brake pipe must be connected to the semi-trailer brake pipe when the process of air connection. The tractor’s inflation tube must be connected to the semi-trailers semi-trailer’s. Please attach it perfectly. You can mark the brake pipe joints and inflatable pipe joints yellow and red, respectively.
  • The trailer air brake system adopts traction inflation. When the air pressure in the tank is 686KPa, the driver can try driving the semi-trailer. If the air chamber is in motion condition and you can hear the “humming” sound, that means the semi-trailer tank has been filled with fuel.
  • However, if the air circuit is not working or the air pressure is not enough, dangerous things would happen, such as the tractor may not be able to pull the semi-trailer, or you are not braking when you are driving. You should pay special attention to it.
  • Please check whether the lighting signal is complete and adequate or not and turn on the circuit, connect the electric connector of the tractor to the seven-prong socket of the semi-trailer.
  • (3)Check that the trailer fuel tank pressure is not less than 600KPa before starting the trailer.
  • (4)Retract the outrigger, press the handle, and hang it on the handle frame.
  • (5)Check whether the tire pressure is within the specified value.
  • (6)Check whether the spare tire is correctly placed on the tire carrier and tightened with bolts.
  • (7)Loosen the hand brake or air brake hand control valve.
  • (8)You can drive after completing the above operations. You should strictly observe the following two rules when going downhill: firstly, prevent the brake drum from overheating when you are going downhill or on steep slopes; secondly, please do not use the semi-trailer brakes for a long time or alone.
  • (9) When the traction units are separated.
  • Choose a flat and solid ground to park the trailer. Please do not park the trailer on a slope or a steep slope.
  • You should operate the outrigger handle to lift and raise the platform so that the support plate can touch the ground.
  • Close the tractor’s two brake air hose screw plugs and remove the brake air hose and seven core plugs.
  • Check whether the trailer is braking or not and turn the brake until it works.
  • The semi-trailer should be supported on the ground and in the braking state when tractor and semi-trailer are separated.


Inspection and maintenance of Panda flatbed semi-trailers

Routine maintenance and regular inspection are to use the semi-trailer better and maximize the life of the semi-trailer.

Inspection and maintenance essentials.

The inspection is usually carried out under no-load conditions except as specified.

Both axles are lifted simultaneously when lifting wheels, and a flatbed semi-trailer should position the jack close to the leaf spring.

The flatbed semi-trailer parts in contact with the jack should be covered with rear steel plates or wooden boards to prevent local stress or even slippage.


Brake system inspection

(1) Check the entire pipeline.

A. Connect the pass air brake system and the traction brake system.

B. Increase the air pressure to the specified pressure by installing a pressure gauge from the tractor cab or the emergency brake system and checking the air pressure.

C. Fully depress the brake pedal. The drop in air pressure does not exceed 19.6KPa within 3 minutes after the air pressure has stabilized (engine not running). If the cause of the air leak is exceeded, check. Driving should not be started when the cylinder pressure is below 540KPa.

D. If the pressure drop exceeds the specified value, apply soapy water to the pipe connection and check for leaks. If leaking, tighten the parts or replace them.

E. switch off the tractor emergency system, replace the swivel plug, disconnect the trailer emergency brake inflation hose and check for automatic braking.

F. Then connect the emergency brake hose and open the changeover plug to check that the brake will release automatically.

(2) Checking the emergency relay valve

A. In the various checks of the braking system, check that there is no air leakage in all parts of the emergency relay perimeter and that the air pressure drop value does not exceed 19.6KPa within 3 seconds.

B. Check whether there is exhaust gas discharged from the exhaust port when the brake is released if it is considered normal.

C. If it does not work, replace the entire emergency brake valve

(3) Check the brake chamber

A. Check whether the inner push rod of the brake air chamber is flexible in its activities when the brake is working and whether it has the required stroke. If the specified travel is exceeded, make adjustments.

B. In the braking state, check that there is no air leakage from the air chamber. If there is leakage, a flatbed semi-trailer should tighten the joint.

(4) Check the air tank

A. Always unscrew the waterproof valve at the bottom of the gas cylinder after driving to drain the internal condensate.

B. When draining the liquid, the air inside the cylinder is drained simultaneously. If too much air is exhausted to make the spring work, the platform trailer should replenish the air pressure to keep the pressure in the cylinder at the specified.

(5) Inspection of pipes and fittings

Check all pipes and fittings for cracks and damage, if any repair or replace in time.

(6) Adjustment of brake adjusting arm and brake

A. Operate the brake air chamber, check the working condition of the brake adjusting arm, and prevent the air chamber’s stroke. If the travel is too extensive, the brake drum and the brake tile clearance are too large and too big.

B. When adjusting the brakes, be sure to push in some first, then turn the square head adjusting screw so that the brake shoes safely touch the brake drum, then reverse the feeling or hear two “da da” sounds for OK, under the no-load road test, adjust the left, right, front and rear axle brake synchronization.


Drive unit inspection (axle and tires)

Check axles and tires for cracks, damage, and bends, repair and replace if necessary.

(1) Tighten and adjust axle nuts

A.Jack up the trailer


To adjust, slowly screw in the inner nut until there is more excellent resistance to the wheel, then loosen the inner nut until the wheel can turn freely without wobbling. Bend the locking washer appropriately to lock the outer nut or wear the pin.

(2) Inspection and maintenance of tires

A. Whether the tire pressure has a significant impact on the life and safety of the tires, so maintain the required tire pressure, including the spare wheel

B. Different tires require different air pressures and are selected according to road and braking conditions.

C. Check the tightness of the wheel nuts daily and tighten if necessary. Checking wheel nuts for tightness

After initial loading and driving or after each wheel change, use a torque spanner to tighten the wheel nuts crosswise in diagonal order to the required.


Suspension system inspection

(1) The steel plate springs should be checked daily for breakage and equal deflection of the left and correct springs and replaced if necessary.

(2) After driving a new vehicle or replacing the springs, the nuts on the U-bolts should be tightened and then checked once a month or every 5,000 km.

(3) Check the bolts on the connecting rod and tighten them if they are loose.


Traction pin and traction plate

(1) Check the draw pins daily for defects, premature wear, cracks, etc.

(2) Measure the diameter of the traction pin and replace if it is less than the limit size 49mm (50) or 86mm (90), or if it is cracked or abnormally damaged.

(3) Check the traction pin plate for damage, deformation, foreign objects, and repair if necessary.


Electrical system

(1) Check for loose wiring and terminals, sagging wires, and repair if necessary.

(2) Check each lamp. If the bulb is broken or the filament is broken, replace it.

Note: Lamp voltage is 24V.

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