Different Parameters, Different Price. Price Reference Only.   A grain trailer is a traifuel capacity of semi truckhard cover trailerler pulled by a truck tractorsemi trailer spare partssemi trailer van and used to haul bulk commodity products, such as grain. These trailers are used extenstrailer heavytrailer manufacturerively throughout the Africa to transport agricultural products as well as any other commodity that cafuel truckssemi trailer siden be hauled in bulk and loaded and unloaded t18 wheeler trailer trucksemi dump trailer partshrough the trailer.