A cargo transport unit for transporting cylindrical cargo includes a first side and an opposite, second side, a first end and an opposite, second end, a trough including inclined support walls supporting the cylindrical cargo, and a frame structure supporting the trough from below and including plural transverse supports. A first longitudinal edge profile and a second longitudinal edge profile of its bottom structure are both made of a profile including a continuous seamless structure extending from a first end to a second end of the cargo transport unit, and the transverse supports include a lower part extending from the first to the second longitudinal edge profile, and located at a height level of the longitudinal edge profiles, the lower part at its first end being welded to the first longitudinal edge profile and at its opposite, second end being welded to the second longitudinal edge profile.