Jan 01, 2019
The semi-trailer is the rear of the axle placed at the center of gravity of the vehicle (when the vehicle is evenly loaded) and is equipped with a trailer that transmits horizontal and vertical forces to the coupling of the tractor. Semi-trailers are generally three-axle semi-trailers, and their types are divided into eleven-meter warehouse bar semi-trailers, thirteen-meter warehouse rails, and low-profile semi-trailers. It is a heavy-duty transportation vehicle connected to the semi-trailer head by a tractor pin.
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