Section XIII — Articles of stone, plaster, cement, asbestos, mica or similar materials; ceramic products; glass and glassware
Chapter 70 — Glass and glassware
Heading 7002 — Glass in balls (other than microspheres of heading 70.18), rods or tubes, unworked.
National subdivision 7002.3 — Tubes:
Subheading 7002.31 — Of fused quartz or other fused silica
HS code
7002.31.00 Of fused quartz or other fused silica
Last Verified Date - 1 October 2026
Common commodities
High-purity amorphous silicon dioxide (fused quartz) unworked tubesFused silica glass tube blanksUnworked UV-transparent quartz glass tubingHigh-temperature resistant fused silica tubesQuartz glass tubes for laboratory use - unworkedPure silica dioxide tubes for optical applications - unworkedFused quartz blank tubes for high vacuum systemsUnworked tubes made from high-purity amorphous silicon dioxide (fused silica) for thermal insulationQuartz glass tubes for heat resistance purposes - unworkedHigh-purity fused quartz tubes - unworked