Flatbed Trailer Dimensions & Capacity Spec (20FT/40FT/45FT/53FT)

The 20/40/45ft flatbed trailer is known as a 20/40/45 foot flatbed semi trailer. The 20/40/45ft flat deck truck semi trailer is a semi trailer with a container structure. They are mainly used in logistics systems supporting ships, ports, routes, highways, transfer stations, bridges, tunnels, and multimodal transport.

The loading part of the 20/40/45ft flatbed trailer is determined according to the size of the standard container. A twist lock device for fixing the container is provided at the position corresponding to the four corners of the bottom of the container.

40Ft trailer specification

Dimension	12500x2500x1500 mm, 40’x8.2’x4.92 ft, 492″x98″x59″.
Length	12500mm, 40′, 492″
Width	2500mm, 8.2′, 98″
Height	1500mm, 4.92ft, 59″

 

20/40/45Ft flatbed trailer specifications

Brand	Panda Mech
Axles	2/3/4 axles, BPW/SAF/FUWA Brand
Dimensions	11500/12500/12800×2500×1500 mm, 37.7’/41’/42’×8.2’×4.9ft, 453″/492″/504″×98″×59″
Length	11500/12500/12800 mm, 37.7’/41’/42′, 453″/492″/504″
Width	2500mm, 8.2′, 98″
Height	1500 mm, 4.9ft, 59″
Capacity	40-80 tons
Tare Weight	6-9 tons
Twist lock	8-12 sets
Material	Main beams Q345B, upper flange:14mm, middle:8mm, down:16mm
King Pin	2 inch or 3.5 inch JOST Brand
Chassis	3mm, 4mm, 6mm, carbon steel or aluminum
Suspension	Mechanical suspension, air suspension
Tire	11.00R20, 12.00R20,12R22.5, 385/65R22.5, Triangle/Hankook/ Bridgestone brand

20/40/45 Foot flatbed trailer images

20ft flatbed semi trailer for sale

40 ft flatbed trailer for sale

4 axle flatbed truck trailer for sale

Standard 40 Ft Trailer Dimensions (Flatbed / High Bed)

For most fleets, a 40 ft trailer is the standard size for container and flatbed work.
A typical Panda Mech 40 ft flatbed trailer has the following external dimensions:

• Length: 12.5 m (≈ 40 ft, 492″)

• Width: 2.5 m (≈ 8.2 ft, 98″)

• Deck height: 1.5 m (≈ 4.9 ft, 59″)

These 40 ft trailer dimensions meet common international standards. If your country allows different widths or heights, Panda Mech engineers can adjust the design while keeping your trailer compliant with local road regulations.

Flatbed Trailer Dimensions Overview – Panda Mech

Trailer Type	Length (m)	Length (ft)	Width (m)	Width (ft)	Deck Height (m)	Typical Capacity (tons)	Typical Axles
20 ft flatbed trailer	7.2–7.5	20–24	2.5	8.2	1.3–1.5	25–40	2 axles
40 ft flatbed trailer	12.2–12.5	40	2.5	8.2	1.4–1.5	40–60 (up to 80)	2–3 axles
45 ft flatbed trailer	13.6–13.8	45	2.5–2.6	8.2–8.5	1.4–1.5	45–70	3 axles
53 ft flatbed trailer*	16.0–16.2	53	2.5–2.6	8.2–8.5	1.4–1.5	45–70	3 axles

Dimensions above are typical values. Panda Mech can customize length, width, deck height and axle layout according to your regulations and cargo.

Flatbed Trailer Width, Height from Ground & Weight Capacity

Standard flatbed trailer width

• • Most Panda Mech flatbed trailers are built to a standard width of 2.5 m (≈ 8.2 ft).

  • In some markets, Panda Mech can design trailers up to 2.6 m width, depending on local regulations.

Typical deck height from ground

• Standard flatbed trailer height from ground is usually 1.3–1.5 m (≈ 4.3–4.9 ft).

• Actual height depends on suspension type, tire size and load; Panda Mech engineers adjust these to match your routes and docks.

40 Ft flatbed trailer weight capacity

• • A typical Panda Mech 40 ft flatbed trailer can carry around 40–60 tons.

  • Heavy-duty models can be engineered for higher capacities where local axle-load laws allow.

20 ft flatbed trailer weight capacity

A 20 ft flatbed trailer usually carries about 25–40 tons, ideal for heavy machinery or concentrated cargo.

Factors that change capacity

• • Number of axles and axle spacing

  • Suspension type (mechanical or air)

  • Steel grade and frame design

  • Legal GVW / axle-load limits in your country

How Panda Mech helps

• Panda Mech provides dimension drawings + load charts for each flatbed model.

• Engineers can fine-tune width, deck height and capacity so your trailer stays compliant, safe and profitable on real routes

Flatbed Trailer Dimensions in Meters vs Feet (How to Convert)

Quick reference: 40 ft flatbed trailer (Panda Mech typical)

• • Meters: 12.5 m (L) × 2.5 m (W) × 1.5 m (deck height)

  • Feet: ≈ 40 ft (L) × 8.2 ft (W) × 4.9 ft (H)

  • Centimeters: 1,250 cm × 250 cm × 150 cm

Basic conversion rules

• • To convert feet → meters: multiply by 0.3048

  • Example: 40 ft × 0.3048 ≈ 12.19 m

  • To convert meters → feet: divide by 0.3048

  • Example: 2.5 m ÷ 0.3048 ≈ 8.2 ft

  • To convert meters → centimeters: multiply by 100

  • Example: 1.5 m × 100 = 150 cm

Typical Panda Mech flatbed ranges (for global markets)

Length:

• • • 20 ft trailers ≈ 7.2–7.5 m

    • 40 ft trailers ≈ 12.2–12.5 m

    • 45 ft trailers ≈ 13.6–13.8 m

Width: usually 2.5 m, sometimes 2.6 m where legal

Deck height: about 1.3–1.5 m

20/40/45 Ft flatbed trailer dimensions in mm

20Ft flatbed semi trailer dimensions: 12500x2500x1500 mm

40 Ft flatbed tractor trailer dimensions: 14500 x2500x1500 mm

45 Feet high bed trailer dimensions: 14500x2500x1500 mm

53 Foot trailer dimensions: 16150x2500x1500 mm

4 Axle flatbed trailer dimension: 12500 x2500x1500 mm

20/40/45 Ft flatbed trailer dimensions (in meters)

20Ft trailer dimensions (in meters): 11.5×2.5×1.5 meters

40 Ft trailer dimensions (in meters): 12.5×2.5×1.5 meters

45 Feet trailer dimensions (in meters): 12,8×2,5×1,5 meters

53 Foot trailer dimensions (in meters): 16.15×2,5×1,5 meters

20/40/45 Ft flatbed trailer dimensions in cm

20Ft trailer dimensions: 1150x250x150 cm

40 Ft trailer dimensions: 1250x250x150 cm

45 Feet trailer dimensions: 1280x250x150 cm

53 Foot trailer dimensions: 1330x250x150 cm

40Ft Container chassis trailer dimensions

40 Ft chassis trailer dimensions: 12500x2500x1500 mm, 40’x8.2’x4.92 ft, 492″x98″x59″

20/40/45 Flatbed trailer weight capacity in tons

20Ft flatbed trailer weight capacity: 35 tons;

40Ft flatbed trailer weight capacity: 70 tons;

45Ft flatbed trailer weight capacity: 70 tons.

40Ft frontboard flatbed trailer dimensions

12500x2500x1500 mm, 40’x8.2’x4.92 ft, 492″x98″x59″.

Features

1. Highly robust structure steel with tensile and high load capacity, 80-ton loading capacity.
2. Heavy-duty type mechanical spring suspension for high loads of requirements needs.
3. Length and width of bed available custom made.
4. Air suspension and bogie suspension is an option.

Why Trust Panda Mech for Flatbed Trailer Design & Manufacturing

Panda Mech is a MIIT-approved semi trailer manufacturer in China with 20+ years of experience in designing flatbed, container and lowbed trailers. Our engineers use 3D CAD and finite element analysis (FEA) to optimize frame strength, weight and durability.

Each Panda Mech flatbed trailer is:

• Designed to meet local length, width and height regulations

• Tested for braking, frame strength and load capacity before shipping

• Supported with drawings, manuals and after-sales service to help your team operate safely

When you use this page to check 40 ft trailer dimensions or flatbed trailer dimensions in meters, you are reading data compiled by a real manufacturing team, not just a marketing article.

Panda Mech

We are a flatbed trailer manufacturer from China. We supply 20ft 40ft 45ft flatbed trailers for sale. We can customize it according to your needs. Panda Mech manufacturers have been successful in Southeast Asia, the Middle East, Africa, and South America, such as the Philippines, Tanzania, etc…

FAQ

40 Ft trailer dimensions (in meters)

12.5×2.5×1.5 meters, 12.5mx2.5mx1.5m; [Related: 40ft trailer demision & capacity & Weight]

What is the width of a flatbed trailer?

The standard width of a flatbed trailer is about 2.5–2.6 m (8.2–8.5 ft).

In many countries, flatbeds are built to 2.5 m to match local road rules, while in North America the common legal maximum is 102 inches (about 2.6 m) including accessories.

What is the height of a flatbed trailer from the ground?

The height of a standard flatbed trailer from the ground is typically about 1.3–1.5 m (≈ 48–60 inches).

This dimension can vary slightly depending on suspension type, tire size, and whether it’s a high-bed export design or a lower platform. Panda Mech usually designs flatbeds around 1.4–1.5 m deck height unless a special requirement is specified.

How much weight can a 40 ft trailer carry?

A typical 40 ft flatbed trailer can legally carry about 25–35 tons (55,000–77,000 lb) of payload. Actual capacity depends on trailer design, axle count, suspension, tire rating and local road regulations. Heavy-duty Panda Mech 40 ft trailers can be engineered for higher gross weights where national laws permit.