Analysis
Subheading 7017.10 covers of fused quartz or other fused silica, within heading 7017. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 2 US tariff lines below it are national.
1 of its 2 lines with a percentage rate are duty-free at the general rate (50%) and 1 are dutiable, from duty-free up to 4.6%. The median line pays 2.3%.
The US splits it as follows: 7017.10.30 for quartz reactor tubes and holders designed for insertion into… (duty-free) and 7017.10.60 for of fused quartz or other fused silica: other (4.6%).
By Census's concordance, most of its statistical lines are made by Other Pressed and Blown Glass and Glassware Manufacturing (327212). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 7017.10 once they fall within heading 7017 (laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 7017.10.30 | Quartz reactor tubes and holders designed for insertion into diffusion and oxidation furnaces for production of semiconductor wafers | Free |
| 7017.10.60 | Of fused quartz or other fused silica: other | 4.6% |