Low Bed Semi-Trailer for Sale

OUR PRODUCT

Low Bed Semi-Trailer — Complete Buyer's Guide 2026

The low bed semi-trailer (lowboy) carries tall, heavy and oversized cargo — excavators, bulldozers, cranes, transformers and industrial plant — on a deck that sits much closer to the ground than a standard flatbed. Lower deck height means a lower centre of gravity and more vertical clearance, which is exactly what oversize haulage needs.

ZS Truck (Shandong Zhongsheng Vehicle) manufactures and exports lowboy trailer / lowbed trailer / heavy equipment trailer to buyers in Africa, the Middle East, Southeast Asia and Latin America. Every unit is built to order, inspected before shipment, and delivered with a full set of export documents.

1. What Is a Low Bed Semi-Trailer?

Typical applications

Excavator and bulldozer transport
Crane and rig transport
Transformer and generator haulage
Industrial plant and machinery
Wind turbine components

2. Key Specifications

Below are the standard specification ranges we build. Any parameter can be adjusted to your market requirements — tell us the payload, road conditions and local regulations and we will recommend a configuration.

Deck height	0.9–1.1 m loaded
Capacity	40–120 t
Axles	2–8 axles, 13 t / 16 t / 20 t rated
Deck length	9–18 m, extendable optional
Gooseneck	Detachable or fixed
Ramp	Mechanical or hydraulic folding ramps
Suspension	Mechanical, air, or hydraulic
Tyre	12R22.5 / 315/80R22.5, 8–32 wheels

3. How to Choose the Right Low Bed Semi-Trailer

Five decisions determine 90%% of the specification. Work through them in order:

Weigh and measure the machine. Deck length, width and capacity all follow from the dimensions of the largest machine you will move.
Choose the axle count. 2–3 axles for 40–60 t; 4–6 axles for 60–100 t; 6–8 axles for 100 t+.
Decide detachable or fixed gooseneck. A detachable gooseneck lets you load from the front, which is essential for tracked machines that cannot climb ramps.
Select the ramps. Hydraulic folding ramps save time and labour on frequent loading; mechanical ramps cost less.
Consider an extendable deck. An extendable deck handles long loads such as turbine blades and pipe without buying a second trailer.

4. Price Factors: What Actually Drives the Cost

There is no single price for a low bed semi trailer — the final figure depends on the configuration you choose. The main factors are:

Capacity and axle count — Each additional axle adds 12–18% to the trailer price.
Detachable gooseneck — Adds roughly 10–15% over a fixed gooseneck.
Hydraulic ramps and suspension — Adds USD 3,000–8,000 depending on configuration.
Extendable deck — Adds 15–25%.
Deck and steel grade — High-strength steel and hardwood decking add 8–12%.

5. Why Our Price May Differ From Other Suppliers

Buyers often see a wide spread of quotations for what looks like the same low bed semi trailer. The difference is almost always in the specification, not the margin:

Steel grade and thickness. A trailer built from thinner or lower-grade steel can be 10–20% cheaper and will not last as long under abrasive loads.
Axle and suspension brand. Genuine branded axles cost more than unbranded copies and are far easier to get parts for.
Hydraulic and electrical components. Imported cylinders, pumps and wiring harnesses add cost but reduce downtime.
Paint and surface treatment. Proper shot-blasting and multi-coat painting is a real cost that some suppliers skip.
Inspection and documentation. Pre-shipment inspection and complete export documents are included in our price.

We will always tell you exactly what is in a quotation, and we will quote a cheaper configuration if that is genuinely the right answer for your operation.

6. Shipping, Delivery and Export Documents

We ship from Qingdao and Tianjin ports. Standard lead times:

New build: 25–45 days depending on specification and options.
Used units: 10–20 days to load after order confirmation.
Ocean freight: West Africa 30–45 days, East Africa 25–35 days, Middle East 18–28 days, Southeast Asia 12–22 days, South America 35–50 days.

Every shipment includes a commercial invoice, packing list, bill of lading, certificate of origin and any inspection certificate required by the destination country. We can also arrange marine insurance and, on request, door delivery.

7. Frequently Asked Questions

Q1. What is the difference between a low bed and a lowboy?

They are the same trailer. "Lowboy" is the common North American term and "low bed" is the more international term.

Q2. How much can a low bed semi-trailer carry?

Standard models carry 40–60 t. Heavy-duty 6- to 8-axle units carry 80–120 t.

Q3. Do I need a detachable gooseneck?

If you move tracked excavators or bulldozers that cannot climb a ramp, yes. Front loading is the only practical way to load them.

Q4. What deck height can you achieve?

Typical loaded deck height is 0.9–1.1 m; extra-low models can reach 0.8 m for very tall cargo.

Q5. Can the deck be widened?

Yes, we build to your required deck width, including 3 m and 3.2 m widths for oversize loads.

Q6. Is air suspension better for machinery?

Air suspension reduces shock loading on both the trailer and the machine, which is worth the extra cost for high-value equipment.

Q7. How long is production?

30–45 days for a custom low bed trailer, depending on axle count and options.

Q8. Can you ship a low bed trailer with the machine on it?

In most cases yes, though it is often cheaper to ship them separately depending on route and dimensions.

8. Related Products

Browse the low bed semi trailer models we currently offer:

Contact Us for a Low Bed Semi-Trailer Quotation

Send us your required payload, road conditions and destination port, and we will come back with a specification and a firm quotation. We answer most enquiries within one working day.