| 8403.10.00 | 00 | Boilers | No. | Free | | 45% |
| 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: | | | | |
| 8404.10.00 | | Auxiliary plant for use with boilers of heading 8402 or 8403 | | 3.5% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 45% |
| 8404.10.00 | 10 | Economizers | t | | | |
| 8404.10.00 | 50 | Other | t | | | |
| 8404.20.00 | 00 | Condensers for steam or other vapor power units | t | 5.6% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 45% |
| 8405 | | Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers; parts thereof: | | | | |
| 8405.10.00 | 00 | Producer gas or water gas generators, with or without their purifiers; acetylene gas generators and similar water process gas generators, with or without their purifiers | X | Free | | 45% |
| 8406 | | Steam turbines and other vapor turbines, and parts thereof: | | | | |
| 8406.10 | | Turbines for marine propulsion: | | | | |
| 8406.10.10 | 00 | Steam turbines | No. | 6.7% | Free (A,BH,CA,CL, E,IL,J,JO, MA,MX,P,SG) 3.3% (AU) | 20% |
| 8406.10.90 | 00 | Other | No. | Free | | 27.5% |
| 8406.81 | | Other turbines: | | | | |
| 8406.81 | | Of an output exceeding 40 MW: | | | | |
| 8406.81.10 | | Steam turbines | | 6.7% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 20% |
| 8406.81.10 | 20 | Stationary steam turbines, condensing type | No. | | | |
| 8406.81.10 | 70 | Other | No. | | | |
| 8406.81.90 | 00 | Other | No. | Free | | 27.5% |
| 8406.82 | | Of an output not exceeding 40 MW: | | | | |
| 8406.82.10 | | Steam turbines | | 6.7% | Free (A,AU,BH,CA, CL,E,IL,J,JO, MA,MX,P,SG) | 20% |
| 8406.82.10 | 10 | Stationary steam turbines, condensing type: | | | | |
| 8406.82.10 | 10 | Not exceeding 7,460 kW | No. | | | |
| 8406.82.10 | 20 | Exceeding 7,460 kW | No. | | | |
| 8406.82.10 | 50 | Other: | | | | |
| 8406.82.10 | 50 | Not exceeding 7,460 kW | No. | | | |
Harmonized Tariff Schedule of the United States inquiry: 3920590000
