| 8431.43 | | Parts for boring or sinking machinery of subheading 8430.41 or 8430.49: | | | | |
| 8431.43.40 | 00 | Of offshore oil and natural gas drilling and productions platforms | X | Free | | 45% |
| 8431.43.80 | | Other | | Free | | 35% |
| 8431.43.80 | 20 | Of oil and gas field machinery: | | | | |
| 8431.43.80 | 20 | Tool joints, whether or not forged | No. | | | |
| 8431.43.80 | 40 | Drill pipe fitted with tool joints | No. | | | |
| 8431.43.80 | 60 | Other | X | | | |
| 8431.43.80 | 90 | Of other boring or sinking machinery | X | | | |
