1. What Is a Semi-Trailer?

A semi-trailer is a type of trailer that lacks a front axle and relies on a tractor unit for support. The connection between the semi-trailer and the tractor is achieved through a fifth-wheel coupling mechanism. Semi-trailers are highly regarded for their flexibility, efficiency, and capability to transport diverse types of cargo across various terrains.

2、Features of Semi-Trailers:

1、Versatility: Adaptable to numerous industries, from logistics to construction.

2、Efficiency: Designed to maximize cargo space and optimize weight distribution.

3、Interchangeability: Easily attachable or detachable from different tractor units.

4、Customizable Design：Available in various configurations, semi-trailers can be tailored to specific needs.

5、Durability and Robustness：Built with high-quality materials, semi-trailers are designed to endure harsh road and weather conditions, ensuring long-term reliability. 

3、 Semi-Trailer Classifications

Each category addresses specific needs and applications, as detailed below.

Flatbed semi-trailers feature an open platform with no sides or roof. This design makes them ideal for transporting oversized or irregularly shaped cargo, such as heavy machinery and construction materials.

These trailers are equipped with panels or fences along their sides to secure cargo. Commonly used for transporting bulk materials, they are perfect for agricultural produce and packaged goods.

Specially designed for carrying containers, these trailers come with twist locks to secure the cargo. They are essential in intermodal transport, bridging road, rail, and sea shipping.

(4) Dry Van Semi-Trailers

Enclosed to protect goods from adverse weather and theft, these trailers are ideal for transporting electronics, furniture, and packaged goods that require added security.

Tank trailers are tailored for transporting liquids, gases, or fine powders. Their cylindrical shape ensures stability and efficiency, commonly used for fuel, chemicals, and water transportation.

With a hydraulic lift mechanism, dump trailers are designed for unloading bulk materials such as sand, gravel, or construction debris. They are widely utilized in construction and mining sectors.

Lowbed trailers feature a low deck height, making them suitable for hauling heavy and oversized equipment, including excavators, cranes, and industrial machinery.

Adjustable length to accommodate varying cargo sizes.

Equipped with multiple axles to evenly distribute weight and enhance stability.

Perfect for transporting perishable goods like food, pharmaceuticals, and flowers.

6、Car Carrier Semi-Trailers

Car carrier semi-trailers are specially designed for transporting multiple vehicles simultaneously. They are available in both open and enclosed configurations, offering various levels of protection depending on the requirements.

Features of Car Carriers:

Specialized Uses: Commonly used by dealerships, auctions, and for long-distance vehicle transport.