Semi-Truck & Trailer Industry

In the modern road freight transportation system, semi-trailer tractor units play a crucial role and are the key equipment for achieving efficient logistics transportation. They not only undertake long-distance transportation tasks for bulk commodities, industrial raw materials, and various manufactured products, but also play an irreplaceable role in promoting regional economic exchanges and facilitating the coordinated development of industries. This article will deeply analyze the current market situation, application scenarios, and future development trends of semi-trailer tractor units, providing comprehensive and in-depth insights for industry practitioners and those interested in this field.
I. Definition and Structural Characteristics

A semi-trailer tractor is a commercial vehicle specifically designed for towing semi-trailers. Its core function is to provide power and traction control. It consists of an engine, chassis, body, and electrical equipment. The chassis has a short axle distance and the load is concentrated on the towing seat. Heavy-duty models often come with a two-stage main reducer and some are equipped with wheel-side reducers. The braking system includes pneumatic brake lines, etc. The driver's cab has an additional handbrake, and the rear axle load sensing valve can balance the braking force under different loads.
Classification
Based on the driving mode, the mainstream types are 4×2 (with a simple structure and low cost, suitable for moderate road conditions) and 6×4 (with strong power and large load capacity, suitable for heavy-duty and complex road conditions). According to the purpose, they are divided into high-power high-speed tractor trucks (equipped with large engines, suitable for long-distance transportation of semi-trailers such as box trucks and containers) and low-speed tractor trucks (with low speed, mostly 6×4 drive, used for towing step-type semi-trailers, emphasizing stability and load capacity).

Market size

Domestic: Sales from January to April 2024 were 8,665 units. The market size in 2022 was approximately 30.318 billion yuan. It is expected to reach over 40 billion yuan in 2024 and exceed 45 billion yuan in 2025, driven by the development of e-commerce, logistics, and policies.
Global: Approximately 15 billion US dollars in 2022, expected to reach 48 billion US dollars in 2030. China's share is expected to reach 45%. The global compound growth rate from 2019 to 2025 is 3.7%, while China's growth rate is 6.2%. There is room for growth in the ratio of trailer towing in haulage transportation.
Supply Chain
Upstream: Includes raw materials and power, transmission and other system components. There are many enterprises and fierce competition. Supply is sufficient and prices are stable. For example, there are brands like Weichai for engines.
Downstream: Covers fields such as engineering, logistics, and cold chain. It is greatly influenced by the macroeconomy. The demand is driven by e-commerce, express delivery, infrastructure construction, etc. The technical requirements for vehicles in the cold chain sector are high.

Application scenarios

Logistics: Transport various goods using different semi-trailers, with甩挂 transportation enhancing efficiency and suitable for e-commerce, less-than-truckload, etc. scenarios.
Engineering: Transport construction materials such as sand, gravel, and steel, capable of handling long distances and complex road conditions, ensuring the progress of engineering projects.
Industry: Responsible for the transportation of raw materials and finished products, covering industries such as steel and automotive manufacturing.
The semi-trailer tractor is the core of road transportation. It has broad market prospects but is also facing environmental protection and technological challenges. In the future, it needs to develop towards new energy, intelligence, and lightweighting. Enterprises need to increase research and development, strengthen cooperation, and investors need to pay attention to trends and competitive factors.
