| 7002 | | Glass in balls (other than microspheres of heading 7018), rods or tubes, unworked: | | | | |
| 7002.31.00 | 00 | Tubes: | | | | |
| 7011 | | Glass envelopes (including bulbs and tubes), open, and glass parts thereof, without fittings, for electric lamps, cathode-ray tubes or the like: | | | | |
| 7011.20 | | For cathode-ray tubes: | | | | |
| 7011.20.45 | 00 | Monochrome glass envelopes, the foregoing certified by the importer as being for actual use in automatic data processing machine data or graphic display cathode ray tubes | hundreds | Free | | 55% |
| 7011.20.85 | 10 | Front panels for cathode-ray television picture tubes, including video monitor tubes, color, non-projection: | | | | |
| 7017.10.30 | 00 | Quartz reactor tubes and holders designed for insertion into diffusion and oxidation furnaces for production of semiconductor wafers | X | Free | | 50% |
| 7020.00.30 | 00 | Quartz reactor tubes and holders designed for insertion into diffusion and oxidation furnaces for production of semiconductor wafers | X | Free | | 55% |
| 7209.18.25 | 10 | Of a kind for use in making aperture masks for cathode-ray tube video displays | kg | | | |
| 7211.23.60 | 75 | Of a kind for use in making aperture masks for cathode-ray tube video displays | kg | | | |
| 7225.50.80 | 15 | Of a kind for use in making aperture masks for cathode-ray tube video displays | kg | | | |
| 7303.00.00 | | Tubes, pipes and hollow profiles, of cast iron | | Free | | 33% |
| 7304 | | Tubes, pipes and hollow profiles, seamless, of iron (other than cast iron) or steel: | | | | |
| 7304.22.00 | | Casing, tubing and drill pipe, of a kind used in drilling for oil or gas: | | | | |
| 7304.24.60 | | Tubing | | Free | | 35% |
| 7304.29.50 | | Tubing: | | | | |
| 7305 | | Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: | | | | |
| 7305.31.20 | 00 | Tapered pipes and tubes of steel principally used as parts of illuminating articles | kg | Free | | 45% |
| 7306 | | Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: | | | | |
| 7306.21 | | Casing and tubing of a kind used in drilling for oil or gas: | | | | |
| 7306.21.80 | | Tubing | | Free | | 10% |
| 7306.29.60 | | Tubing: | | | | |
| 7306.30.30 | 00 | Tapered steel pipes and tubes principally used as parts of illuminating articles | kg | Free | | 45% |
| 7306.30.50 | 35 | Tube and pipe hollows for redrawing | kg | | | |
| 7306.50.30 | 00 | Tapered pipes and tubes of steel principally used as parts of illuminating articles | kg | Free | | 45% |
Harmonized Tariff Schedule of the United States inquiry: 3203Ã
