Fused Quartz Rod-Tubes for Laboratory Furnaces
Hybrid rod-tube fused quartz glass unworked structures for custom lab furnace construction. HTS 7002.39.00 encompasses these complex unworked forms including fused silica. Extreme thermal properties for research heating.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If solid rod form without bore
Solid fused quartz classifies under unworked rods, not tubes.
If parts of laboratory heating ovens
Assembled furnace quartz ware becomes oven parts.
If refractory grade quartz
Lower purity quartz for furnaces under refractory heading.
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Import Tips & Compliance
• Custom dimensions require detailed engineering drawings for customs
• Classify as tubes if hollow; solid = 7002.49 balls/rods
• University/research imports may use duty-free provisions
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