Railroad wagons take goods as the main object of transportation, and can be divided into general-purpose wagons and special-purpose wagons according to their use. General-purpose wagons are vehicles suitable for the transportation of a wide range of goods, such as open wagons, shed wagons, flat wagons and so on. Special-purpose wagons refer to the transportation of a particular type of goods vehicles, such as coal wagons, container trucks, bulk cement trucks.
