Everything There is to Know Before Buying Your Next Flatbed Trailer

09 Jun.,2025

 

Everything There is to Know Before Buying Your Next Flatbed Trailer

Choosing The Right Flatbed Trailer

[Read: “3 Types of Flatbed Semi-Trailers”]

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A lot depends on what you want to get out of your trailer. Choosing the right flatbed trailer for you is going to depend on what you’re hauling, where you’re hauling, and how long you’re holding onto the trailer.

If you’re looking for something flashy, maybe an aluminum trailer is the way to go. But, if you want something to go to work, maybe you’re looking at a combo trailer. If you need something heavy-duty, an all-steel trailer could be right for you.

Aluminum Flatbeds

Aluminum flatbed trailers are typically your lightest option, lighter than steel or combination trailers, consisting entirely of aluminum – beam, side rails, and floors.

These trailers cost more than a combo and steel trailers, but on the upside, they do have a higher resale value.

Because aluminum deflects more than steel, these flatbeds are built with an arch (camber) in the trailer, which allows the beam to level as weight is added.

Combination Flatbeds

Combo flatbed semi-trailers are comprised of a steel beam, aluminum floor, and aluminum side rails. They provide the weight-savings of aluminum with the strength of the steel beam.

Combo trailers are less expensive than aluminum trailers and slighter more expensive than steel.

Steel Flatbeds

Steel trailers are built entirely of steel, including the beam, side rail, and suspension hangers, making them heavier than aluminum or combo.

They are a lower upfront investment; however, you won’t get as much on the resale value. It’s built to last and will be a good work trailer.

Pros:

  • Steel trailers have a wood floor that provides nearly unlimited options for dunnage securement.
  • Most durable out of the three. Since the entire trailer is steel fewer issues with corrosion due to dissimilar metals.
  • Cheapest upfront option

Cons:

  • The wood floor will eventually wear out and will need to be replaced
  • Steel is more susceptible to rust, especially in the northeast.
  • Lesser resale value

What Are Curtain Side Trailers Used For?

[Read “Conestoga vs Curtainside Trailers”]

A curtainside trailer, or curtain van, is a dry van and a flatbed trailer combined into one trailer. It loads like a flatbed but protects like a van with a ceiling, front wall, and rear doors. The sides are open to allow access for loading, and the rear swing doors will enable it to be dock-loaded, similar to a dry van.

Curtains hang from the roof on each side of the trailer, slide open, and close to provide an enclosed trailer. On the Curtain side trailer, the frame does not move, and therefore top loading is not possible.

Curtain side trailers are an excellent option for loads that require more protection and special handling or when it’s more efficient to load from the side. It’s also a good option if you have multiple stops to make.

  • Curtain side trailers have a rear door like a dry van.
  • Typically has a support system for the roof, side and center supports, and a rear door frame.
  • Can be retrofitted to any flatbed but requires more modification to the flatbed trailer than a Conestoga kit.
  • It’s a heavier setup than the Conestoga kit because the system includes a roof, frame system, front bulkhead, and rear door.
  • It gives the option to side load or rear load the trailer.

5 Ways to Reduce the Weight of Your Flatbed Trailer

[Read “7 Ways to Maximize Your Payload on a Flatbed Semi”]

The way to increase your payload is to take weight off of your flatbed trailer. Below are some ways to do that.

  1. Start with the right flatbed.
    Most importantly, you want to start with the right flatbed. Lightweight options include the all-aluminum MAC and the AE, which at lbs. competes with all-aluminum flatbeds.
  2. Aluminum cross members.
    Going with aluminum vs. steel cross members saves approximately 400 lbs.
  3. Increase cross member spacing.
    Increasing the cross members spacing from 12″ to 18″ saves approximately 300-400 lbs.
  4. Wheels and tires.
    Low Pro 22.5” tires on aluminum wheels are approximately 500 lbs. lighter than 11R 24.5” on steel wheels.
  5. Closed tandem slider vs. spread axle.
    Spread axle weighs up to 500 lbs. less than a closed tandem sliding axle.

Why Are Some Semi Trailers Bowed?

[Read “Beam Ratings on a Flatbed Semi-Trailer”]

Aluminum trailers are lighter and less rigid than steel and flex a lot more than steel, so they’re built with an arch (Camber) to allow for flexing as the trailer flattens out when loaded heavily.

This arch might not be ideal for transporting long flat materials. Use dunnage racks to help fill that gap between the trailer’s arch and the product.

Increase Cross Member Spacing.

Space aluminum cross members closer together than steel cross members to support the additional weight from deflection, especially in applications where you’re rearing-loading with a forklift.

Combination and All-Steel Trailers.

Combination and all steel trailers have less camber with the steel beam and, therefore, are flatter trailers.

Combination trailers typically include cross braces for additional support. The weight of the load is distributed through the cross braces and back to the steel beam itself.

How To Keep Screws from Popping and Waves in Your Flatbed Floor

Most flatbeds are not properly set up to back up to a dock with a forklift loading from the rear. Consider your cross member spacing and composition to help prevent those popping screws and waves in your floor.

Read [“5 Ways to Prevent Damage to Your Flatbed”]

Aluminum Crossmember Spacing

If you are rear loading or have concentrated loads, we recommend decreasing your cross members to a maximum spacing of 12″ because aluminum cross members have more deflection than steel.

Steel Crossmember Spacing

Steel cross members are stronger, so you can get away with spacing your cross members at 16″; however, you might still want to consider 12″ spacing.

Know What your Trailer is Capable of Hauling

It is important you need to understand how your trailer is spec’d and the load it’s equipped to handle.

A trailer with 24″ cross member spacing, and no side cross braces, should not be rear-loaded, and be mindful of the load toward the outside of the rail because the trailer is not set up to support the weight.

Load Securement Options for a Flatbed Semi-Trailer

Winches and Straps

Available in steel, galvanized steel, low profile for use with toolboxes and drop decks, winches are a very common way to secure a load on a flatbed.

They can be mounted on the driver side, curbside, or both sides of the trailer. It all depends on your philosophy. For the driver, it’s easier to work with straps on the driver’s side; however, it’s safer to adjust your load from the curbside if you’re pulled off the side of the road.

You might consider load securement points on both sides for taller loads to help prevent the load from shifting. Utility has a proprietary side rail with the winch tracks built into it, allowing winches to be placed on both sides of the trailer.

Spools and Pockets

Depending on the manufacturer, you may or may not be able to use a pocket to secure a load.

Spools working load limits (WLL) will vary depending on the manufacturer. Be sure to check with them to understand the pipe spools rating.

For example, wrapping a chain around one spool can have one rating, but the rating may change if you wrap it around two spools. The angle at which the chain comes off the spool will also determine the load limit rating on the spool.

Consult with the manufacturer for chain ratings. Also, check with the DOT for load securement regulations, tie-down requirements for heavy equipment, chain ratings, etc.

J-Hooks

J-Hooks (Flatbed J Plates) are an adjustable load securement system used with flat hook straps or chains.

The J Hook plates slide into the tracks located on both sides of the deck, and can be placed anywhere along the track.

  • J Plates provide many options for placement throughout the length of the trailer.
  • They are removable and can be stored on a standard bar rack or a toolbox.
  • J Hook ratings can vary based on manufacturer.

[Read: “Pop Up Chain Adapters, D Rings, and Container Locks.”]

Step Deck vs. Lowboy, Which is Best?

Due to the lower rear deck height, step decks can be a great option for hauling equipment, tall loads, and other cargo.

Generally, any load under 10 ft. tall and 8 ft. wide can be loaded onto a step deck trailer. Small loaders, skid steers, small excavators, or bulldozers are examples of equipment you can potentially haul on a step deck.

We recommend going with a Removeable Gooseneck (RGN) or a Lowboy for larger or heavier equipment. A Lowboy can carry cargo up to 12 feet high and heavier loads.

Step decks are an excellent option for hauling midsized equipment and provide the versatility to haul other loads.

For more 5 axles curtain side trailerinformation, please contact us. We will provide professional answers.

[Read more about: “Hauling Equipment on Step Decks and Flatbeds”]

What is The Best Bulkhead for My Flatbed Semi-Trailer?

What is a bulkhead on a flatbed?

Bulkheads are important to cargo control. They are affixed to the front end of a flatbed trailer to prevent forward movement of cargo and protect the driver carrying heavy loads.

What type of bulkhead is best for my flatbed?

There are two basic types of bulkheads for flatbed trailers, the wrap around and the flat.

Choosing the right bulkhead is important for both safety of the driver and the cargo. You want something durable enough to stand up to shifting cargo while not adding weight to your trailer.

Flat Bulkheads:

  • A flat bulkhead is sufficient if you won’t be loading cargo that requires additional reinforcement on the sides.
  • With the flat bulkhead, you’re not sacrificing any deck space, allowing pallets to be loaded up against the bulkhead.
  • Flat bulkheads are available in both corrugated and flat metal.

Wrap Around Bulkheads:

  • A wrap around bulkhead, or turnback bulkhead, has a return on either side which can provide extra support to help keep a load in place, and the turnback makes it easier to secure the load with side rail kits and panels.
  • Wrap arounds are available with returns of 10″ or up to 24″ in length.
  • Both bulkheads come DOT or Non-DOT rated.

[Read more about: “Bulkheads and Accessories”]

Flatbed Accessories

Toolboxes

Many configurations are available depending on your needs, including bolt-on kits, steerable lift axles, and front and rear configurations.

Mount toolboxes between the spread axle or anywhere along the flatbed on either side.

Dunnage Racks

What is a dunnage rack?

A dunnage rack provides storage on your semi-trailer flatbeds for the wood (or dunnage) while transporting unpalletized loads.

They’re mainly used on flatbed, drop-deck, and gooseneck trailers to free up space on your trailer bed to allow you to carry more cargo.

And, they come in many styles and configurations, including baskets styles with or without a floor, side mounts, cross trailer mounts, and can be designed to hold dunnage as needed.

[Read more about: “Lift Axles, Rear Axle Dumps, and Additional Accessories”]

Curtain Sided Transportation - 5 Things You Must Know

The protection of a van. The loading flexibility of a flatbed.

Curtain sided transportation is suitable for almost all types of cargo, and as such it has become the most common type of transportation in Europe. There are numerous benefits that this type of transportation has in hand both for customers and for trucking companies as well.

Further in this article you can read everything about curtain sided transportation, starting from what a curtain side trailer is to what the most common cargo for curtain side truck are.

Let’s take a read!

1. What Is Curtain Sider Transportation

Curtain sided transportation is definitely IN this year.

There is no doubt why curtain sided s one of the most common types of transportation, and why it increases in popularity each year.

Thereupon, curtain sided transportation can offer your cargo the protection of a van and the loading flexibility of a flatbed. The benefits that this type of transportation has to offer are numerous.

Curtain sided transportation is a win-win choice both for customers as well as for trucking companies. Customers will enjoy a peace of mind by knowing that curtain sided trailers can protect their cargo as it would been a van or a box trailer, whereas truck drivers will enjoy the easy and quick loading and unloading from the sides and back of the trailer.

The numerous benefits that curtain sided transportation has in hand to offer not only that attracts more customers that choose this type of transportation, but as well it makes most trucking companies move forward with the curtain side concept.

2. What is a Curtain Side Trailer?

Curtain side trailers are achieving even bigger dominance in the Euro transportation market this year.

The European transportation market has been really quick in embracing the benefits of curtain side trailers thanks to its three unique features:

  • Flexibility
  • Safety
  • Easy cargo accessibility

Thereupon, the flexibility that this type of trailers offer enables trucking companies to accept regular cargo in both small and large sizes, but as well enables them with the capacity to accept odd-shaped or non-standard freight.

Curtain sided trailers can simply handle whatever cargo challenges your daily schedule throws your way.

By including a curtain side trailer to your fleet you are saying yes to incorporate multiple loads in a single trailer without limitation on what the first or last load will be.

3. Most Common Cargo for Curtain Side Truck

We at Deni Internacional have often been asked, what type of cargo can be transported in a curtain side trailer?

The real answer is: with curtain sided trailer you can transport literally any type of cargo.

The protection that this type of trailer offers, makes its use appropriate for most goods.

In general, curtain sided transportation is used for cargo that is commonly carried on flatbed trailers, but the enclosed environment just widens the list of cargo that can be transported. Hence, this is just part of the cargo type that can be transported with curtain sided transportation:

Building Materials

  • doors
  • windows
  • lumber
  • laminates
  • bricks
  • other construction items

Industrial

  • automotive components
  • aircraft and aerospace components
  • defence equipment
  • chemicals

General Cargoes

  •  agricultural equipment
  • food
  • seeds
  • airfreight
  • paper products

The list of items currently being hauled in curtain side trailers is exhaustive and, perhaps, too long to list completely.

4. Less Than Truckload and Full Truckload

Full truckload transportation and less than truckload transportation make the core of curtain sided transportation.

Curtain sided is the ideal transportation method for both types of shipment but especially for LTL.

When we say LTL shipments, we refer to small packages up to shipments that are too large to considered small packages, but do not make up a full truckload.

Curtain sided transportation is the ideal method for LTL shipments because of trailers’ accessibility.

We at Deni Internacional are specialized in LTL or also known as part load shipments. We are currently offering regular transport and collective cargo from Macedonia, Albania and Kosovo to all European counties and backwards.

5. Importance Of Curtain Sider Transportation

The first and foremost benefit from curtain sided transport is its versatility.

Curtain sided trailers combine the advantages of an enclosed trailers and of a flatbed trailer.

As such it enables quick loading and unloading, as well as an easy accessibility to all cargo that is being transported in the trailer.

The four-side access allows the driver to load and unloading from ground level where docks are occupied or non-existent. Likewise, curtain sided trailers’ versatility enables the driver to load the cargo from the roof as well (with the help of a crane) .

Final Thoughts

All in all, if you have any of the above listed types of cargo, or cargo that was not listed but does fit in LTL, or full truckload but you want to protect it, then we strongly recommend you to go forward with curtain sided transportation.

Want more information on 3 axles fuel tank trailer? Feel free to contact us.