| 8402.90.00 | 10 | Heat exchangers | t | | | |
| 8404 | | Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economizers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapor power units; parts thereof: | | | | |
| 8406.81 | | Of an output exceeding 40 MW: | | | | |
| 8406.82 | | Of an output not exceeding 40 MW: | | | | |
| 8406.82.10 | 10 | Not exceeding 7,460 kW | No. | | | |
| 8406.82.10 | 20 | Exceeding 7,460 kW | No. | | | |
| 8406.82.10 | 50 | Not exceeding 7,460 kW | No. | | | |
| 8406.82.10 | 70 | Exceeding 7,460 kW | No. | | | |
| 8407.29.00 | 30 | 746 W or greater, but not exceeding 18.65 kW | No. | | | |
| 8407.29.00 | 40 | Exceeding 18.65 kW | No. | | | |
| 8407.31.00 | | Of a cylinder capacity not exceeding 50 cc | | Free | | 35% |
| 8407.32 | | Of a cylinder capacity exceeding 50 cc but not exceeding 250 cc: | | | | |
| 8407.32.90 | 40 | Not exceeding 18.65 kW | No. | | | |
| 8407.32.90 | 80 | Exceeding 18.65 kW | No. | | | |
| 8407.33 | | Of a cylinder capacity exceeding 250 cc but not exceeding 1,000 cc: | | | | |
| 8407.33.10 | 30 | Not exceeding 37.3 kW | No. | | | |
| 8407.33.10 | 60 | Exceeding 37.3 kW: | | | | |
| 8407.33.90 | 40 | Not exceeding 18.65 kW | No. | | | |
| 8407.33.90 | 80 | Exceeding 18.65 kW | No. | | | |
| 8407.34 | | Of a cylinder capacity exceeding 1,000 cc: | | | | |
| 8407.34.05 | | Of a cylinder capacity not exceeding 2,000 cc: | | | | |
| 8407.34.05 | 30 | Not exceeding 37.3 kW | No. | | | |
| 8407.34.05 | 60 | Exceeding 37.3 kW: | | | | |
| 8407.34.35 | | Of a cylinder capacity exceeding 2,000 cc: | | | | |
| 8407.34.35 | 30 | Not exceeding 37.3 kW | No. | | | |
