TIPPER & WALKING FLOOR SEMITRAILERS We offer a national and international transportation service of bulk goods. All our semitrailers can be tipped backwards; some of them have a cover/uncover system, while others have the loading bed with an automatic loading and unloading system (walking floor). Also, our vehicles are authorized to carry the waste belonging to the categories and classes: 1-F, 4-E, 5-F.