Drop Deck Semi Trailers

Drop Deck Semi Trailers
Drop Deck Semi Trailers

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Drop deck semi-trailers are a popular type of semi-trailer used in transportation. They are designed to maximize the payload capacity while maintaining stability on the road. In this article, we will explore the common uses of drop deck trailers, the typical dimensions of these trailers.

What is a drop deck semi-trailer?

A Drop Deck Semi-Trailer, also known as a step deck trailer, is a semi-trailer commonly used in the transportation industry to haul heavy or oversized loads.

This type of trailer has a lower deck height compared to a standard flatbed trailer, which allows for taller loads to be transported. The lower deck is located between the front and rear axles, while the upper deck is located over the rear axles.

The step in the drop deck semi-trailer design is created by the lower deck, which drops to a level below the height of the upper deck. This design allows for the trailer to accommodate taller loads while still maintaining a lower overall height.

Drop deck semi-trailers are commonly used to transport construction equipment, large vehicles, and other bulky or heavy items that cannot be transported on a standard trailer. They are also used for transporting items that require extra height clearance, such as tall machinery or cargo containers.

Typical drop deck semi-trailer dimensions

Step deck (drop-deck) semi-trailer

Step deck (drop-deck) semi-trailer

This trailer is used to haul units that are too large for a standard flatbed to transport down the highway safely. The step-deck trailer can transport items up to 10' in length.

- Maximum Legal Acceptable Weights (Pounds): 48,000 lbs.

- Maximum Legal Acceptable Dimensions (Feet – Inches):Length: 37 feet, Width: 8.5 feet (102”), Height: 10 feet (120”).

- Front Deck: Length: 11 feet, Width: 8.5 feet (102”), Height: 8.5 feet (102”).

Double-drop semi-trailer

The double drop semi-trailer can haul units up to 11' 8" legally and safely. Loading and unloading can be more challenging. Furthermore, double drop trailers are less common than standard flatbeds, making them more expensive to use.

Double-drop semi-trailer

- Maximum Allowable Legal Weight (Pounds): 45,000 lbs.

- Maximum Legally Acceptable Dimensions (Inches - Feet): 29 feet in length, 8.5 feet in width, and 11.5 feet in height.

-Front Deck Dimensions: 10 feet long, 8.5 feet wide, and 8.5 feet tall.

- Length: 9 feet, width: 8.5 feet (102"), and height: 10 feet (120").


The RGN, or double drop with detachable deck, can transport freight weighing up to 44,000 pounds.

RGN, or double drop with detachable deck

- Maximum Allowable Legal Weight (Pounds): 44,000 lbs.

- Maximum Legally Acceptable Dimensions (Inches - Feet): 29 feet in length, 8.5 feet in width (102 inches), and 12 feet in height (144 inches). 1. Front Deck: 10 feet in length, 8.5 feet in width, and 8.5 feet in height.

- Rear Deck Dimensions: 9 feet long, 8.5 feet wide, and 10 feet tall.

Benefits of a Drop Deck Semi-Trailer

Increased cargo capacity: Drop deck semi-trailers have a lower deck height than standard flatbed trailers, allowing taller loads to be transported without exceeding height restrictions. This can increase the cargo capacity of the trailer and allow for more efficient transportation of oversized items.

Improved stability: The design of the drop deck semi-trailer, with its lower centre of gravity, can improve strength and handle the road. This can reduce the risk of accidents and make transporting heavy or oversized loads safer.

Versatility: Drop deck semi-trailers can transport a wide range of heavy or oversized items, including construction equipment, vehicles, and cargo containers. The step in the trailer's height also allows for more effortless loading and unloading of tall items.

Reduced damage: The lower deck height of a drop deck semi-trailer can reduce the risk of damage to transported items, as there is less chance of them hitting overpasses, bridges, or other obstacles on the road.

Better fuel efficiency: Because drop deck semi-trailers have a lower profile than standard flatbed trailers, they may have better aerodynamics and require less fuel to transport cargo over long distances. This can result in cost savings for transportation companies.

Where in the world to custom and buy a prestigious drop deck semi-trailer?

Tân Thanh is a leading global manufacturer of drop deck semi-trailers that has gained a reputation for producing high-quality and reliable transportation equipment.

One of the key advantages of Tân Thanh drop deck semi-trailers is their quality. The company uses only the highest quality materials and the latest manufacturing technologies to ensure that every trailer meets or exceeds international safety standards. This commitment to quality has earned Tân Thanh a prestigious reputation in the global transportation industry, and the company's products are widely recognized for their durability, reliability, and long lifespan.

Advantages of Tân Thanh Container's drop deck semi-trailers 

Design: Tân Thanh Container's drop deck semi-trailer is made of a steel complex SM490YA/Q345B with a solid structure, helping to have high load capacity.

Genuine HJ suspension and kickstand: 2-speed manual control, help the car run stably, grip the road and increase the vehicle's durability over time.

Brake system equipped with Sealco toads:  Each drop deck semi-trailer is equipped with 2 Sealco-American splitter toads that can make the car brake faster, and much more durable than Wabco - China toads on the market today. Sealco is rated as the leading prestige in the market in Vietnam and the world today.

Genuine Casumina tires: Tan Thanh also uses Casumina tires (tires) to help transport semi-trailers, specialized machines with high loads, and less wear.

Ultra-durable electrostatic coating film: The chassis uses electrostatic painting technology through the process of spraying, priming, coating, and steaming to increase the life of the semi-trailers and specialized machines.

Tân Thanh Container provides design and shipping global services for drop deck semi-trailers. To order your drop-deck semi-trailer according to your needs, follow our instructions below:

Step 1: Determine Your Needs

You must first determine your specific transportation requirements before ordering your drop deck semi-trailer. What kind of cargo will you be transporting? What are the dimensions and weight of your shipment? This information will assist you in determining the trailer specifications you require, such as axles and suspension type. Specifically, ensuring that transportation regulations in your country or region are in place.

Step 2: Determine the best type of drop deck semi-trailer.

Tân Thanh Container offers a drop deck semi-trailer to meet a wide range of transportation needs. Our standard drop deck semi-trailer is ideal for transporting cargo, particularly reefer containers. 

Step 3: Request a Quote

After you've decided on your trailer specifications, contact Tân Thanh Container for a quote. You can do so by contacting our sales team by phone or email. To provide you with a detailed quote, we will need your trailer specifications as well as your shipping information.

Step 4: Negotiate and Sign the Contract

After receiving the quote from Tân Thanh Container, you can negotiate the price and terms of the transaction before finalizing it.

Step 5: Make global shipping arrangements.

Tân Thanh Container can assist you in arranging global shipping, such as to Canada, Australia, or the United States, once the transaction is completed.

Tân Thanh Container (Tân Thanh Mechanical Trading Corporation) is a leading manufacturer of semi-trailers and container chassis in Vietnam, serving customers across Asia and America since 1994. Our products include a wide range of semi-trailers, such as flatbed, tanker, dump, gooseneck, reefer, sidelifer, lowbed, and shipping container trailers, with custom sizes and weights available to suit your needs.

We take pride in offering high-quality, custom-made products at competitive prices. Our experienced team of engineers and designers work closely with you to understand your specific requirements and design a solution that meets your needs. We use the latest technology and high-quality materials to ensure our products are durable, reliable, and long-lasting.

In addition to our semi-trailer products, we also offer a range of transportation services, including global shipping, quick support, and transportation-added services. Whether you need a custom semi-trailers or a large order, we can provide better pricing and global warranty service to ensure your satisfaction.

At Tân Thanh Container, we are committed to delivering exceptional products and services to our customers. Our popular markets include the United States, Canada, Australia, Cambodia, and Myanmar, with plans to expand our reach even further. If you're interested in learning more about our products and services, please don't hesitate to contact us at info@tanthanhcontainer.com or via Quick Support (+7 GMT - 8:00 to 17:30) at +84 968 039 939. Visit our website at tanthanhcontainer.com to view our products and learn more about our company.

Contact Information


Address: No. 14, Street No. 15, KP 4, Linh Trung Ward, City. Thu Duc, City. Ho Chi Minh City, Viet Nam

Phone number: +84 968 039 939

Email: info@tanthanhcontainer.com

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