8606            |    Railway or tramway goods vans and wagons, not self-propelled.
8606.10.00   - Tank wagons and the like
8606.30.00   - Self-discharging vans and wagons, other than those of subheading 8606.10
8606.91.00     -- Covered and closed
8606.92.00     -- Open, with non-removable sides of a height exceeding 60 cm
8606.99.00     -- Other