Box semi trailers are highly sought - after for bulk cargo transportation. The frame of these van transport semi trailers features a through - beam structure, with the longitudinal beam available in a straight type or gooseneck type. This design not only ensures the trailer’s structural integrity but also contributes to its adaptability in various transportation scenarios. Regarding capacity and size, semi truck box trailers offer remarkable flexibility. The rated capacity spans from 30 to 100 tons, while the length ranges from 7,000 to 18,000 mm. This wide range allows us to precisely meet your specific requirements. Additionally, to further enhance usability, there are multiple options for the side wall height, as well as the number and opening mechanisms of side or back doors. This means that regardless of the type or volume of bulk cargo you need to transport, our closed box semi trailer can be customized to provide an efficient and reliable solution.