The series of low flatbed semi-trailers have flat-plate type, concave beam type and tire exposed structure type. The frame of the low flatbed semi-trailer is stepped, and the longitudinal beam has a cross-section of l-shaped, which has the characteristics of high rigidity and high strength;

The main plane of the cargo platform of the frame is low to ensure the smoothness of transportation. It is suitable for carrying all kinds of construction machinery, large equipment and steel;

Three-axis balanced type, double-shaft balanced type or rigid suspension is adopted. A mass balance block is arranged between the front and rear leaf springs, so that the deflection of the front and rear leaf springs can be changed in equal amounts, and the front and rear axles are balanced by force;

Carbon dioxide gas protection welding, the entire frame is shot peened to make the vehicle more beautiful.