Fused Quartz Diffusion Tube
A high-purity fused quartz tube for insertion into diffusion furnaces used in semiconductor wafer production. It withstands extreme temperatures and corrosive gases during the doping process. This industrial glass article is not covered by other headings and falls under tariff item 7020.00.90 as 'Other' articles of glass.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 6.5% | — | 6.5% |
| 🇲🇽Mexico | 6.5% | — | 6.5% |
| 🇺🇸United States | 6.5% | — | 6.5% |
| 🇩🇪Germany | 6.5% | — | 6.5% |
| 🇯🇵Japan | 6.5% | — | 6.5% |
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the tube is designed for laboratory or scientific use
Laboratory glassware of fused quartz is classified under heading 7017.
If imported with a complete diffusion furnace as a machine
Semiconductor manufacturing machines fall under heading 8486.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify the tube as an industrial glass article, not as laboratory glassware, to avoid misclassification under heading 7017
• Keep documentation of the fused quartz composition (silica content) for customs verification
• Consider duty deferral programs if the tube is used in manufacturing
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