02 Dump semi-trailers are suitable for the transportation of bulk and scattered goods such as ores and building materials. Dump semi-trailers can be divided into two main categories according to their purpose: heavy and overweight dump trailers for off-highway transportation mainly undertake transportation tasks such as large-scale mines and engineering, and are usually used in conjunction with excavators. The other type of light and medium-sized ordinary dump trailer for road transportation is mainly responsible for the transportation of loose goods such as gravel, dirt, etc., and is usually used in conjunction with loaders. 021. The carriage adopts rollover and reverse dump mode, which can effectively improve the transportation efficiency of bulk and loose cargo transported by the loader and unloader. 022. The frame and carriage stringers are welded with high-quality manganese plates, and the containers are dustpan and rectangular. It has high strength, strong lifting force, good rigidity, good toughness, strong bearing capacity, and no deformation. 023. Excellent technology: the main parts are processed by advanced equipment, the stringers are fully automatic submerged arc welding, and the assembly machine is used for the axle and steel leaf spring** assembly.