... , sand washer, sand screen, sand making machine, small sand vessel, and spare parts..If you need some ... barges are used for loading and unloading sand.The small sand barges capacity is like 30cbm, 40cbm, 50cbm ... , 65cbm, 80cbm, 90cbm or other models.The small barges have two types, one unloading sand through opening ... The first one can open the bottom by winch and it has one pontoon, and the second ...