| 84.04 | | Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units. |
| 8404.20 | 000 | Condensers for steam or other vapour power units |
| 84.06 | | Steam turbines and other vapour turbines. |
| 8406.10 | | Other turbines : |
| 8407.29 | 000 | Other |
| 8407.90 | 000 | Other engines |
| 8408.90 | | Other engines |
| 8408.90 | | - Other |
| 8408.90 | 099 | -- Other |
| 8409.10 | | Other |
| 8409.91 | 090 | - Other |
| 8409.99 | | Other |
| 8409.99 | 090 | - Other |
| 84.11 | | Turbo-jets, turbo-propellers and other gas turbines. |
| 8411.22 | | Other gas turbines : |
| 8411.81 | 090 | - Other |
| 8411.99 | | Other |
| 8411.99 | 090 | - Other |
| 84.12 | | Other engines and motors. |
| 8412.10 | 000 | Reaction engines other than turbo-jets |
| 8412.29 | 000 | Other |
| 8412.39 | 000 | Other |
| 8412.80 | 000 | Other |