Horizontal Diffusion Furnace Tube from United States
A long fused quartz tube for horizontal diffusion furnaces used in semiconductor dopant diffusion processes. It is engineered for gas flow dynamics and operation at temperatures above 1200°C. This industrial glass article is not covered by other headings and falls under tariff item 7020.00.90 as 'Other' articles of glass.
Duty Rate — United States → Canada
PGA flags
No agency flag on this HTS number in the CBSA Single Window matching criteria.
CBSA Single Window matching criteria, unknown
Import Tips
• Classify the tube as an industrial glass article, distinct from laboratory glassware under heading 7017
• Maintain records of the tube's dimensions and temperature ratings for customs inspection
• Consider whether the tube qualifies as a component of a semiconductor manufacturing machine for potential duty relief