1、The freight car was tank cars and the hopper cars that piled up cokes.

2、Described are the technical performance parameters, structure features, testing of the movable grain hopper car exported to Sudan.

3、The main features, technical parameters, main structure and testing of the HFE type meter-gauge grain hopper cars are described.

4、The testing results show that the newly developed coating is excellent in abrasion-resistance and impact-resistance and can effectively prolong the service life of coal hopper cars.