What is HS code 700231 used for?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-6 · Subheading
700231
Glass; unworked, in tubes, of fused quartz or other fused silica
Heading 7002 — Glass in balls (other than microspheres of heading no. 7018), rods or tubes, unworked
Chapter 70: Glass and glassware
Plain-language overview
Use HS-6 700231 when importing or exporting unworked glass tubes made from fused quartz or other types of fused silica. For example, you might ship a batch of uncut glass tubes intended for scientific equipment or industrial applications.
This code specifically applies to unworked glass in tube form, distinguishing it from other types of glass products. For instance, HS-6 700232 covers unworked glass rods, while HS-6 700239 includes other unworked glass forms not specified elsewhere.
Fused quartz and silica tubes are often used in high-temperature applications or as insulators in electronic devices. If your product is a finished glass item, you would need to look at other classifications, such as those for glassware or finished glass products.
When classifying your product, ensure that it meets the criteria of being unworked and in tube form. If you're unsure, consulting with a customs broker can provide clarity on whether your product fits under this HS code.
Keywords & topics
Useful terms traders and brokers use for this HS-6 subheading.
unworked glass tubes · fused quartz · fused silica · glass for industrial use · glass tubes for laboratories · high-temperature glass · optical glass tubes · raw glass products · scientific glassware · glass manufacturing · custom glass fabrication · glass tubes classification · glass tubes shipping · glass products HS codes · glass import export
Examples
Drawn from the official tariff wording for this HS-6 subheading. Always confirm against your published schedule and legal notes.
- Unworked glass tubes for laboratory use
- Fused silica tubes for semiconductor manufacturing
- Glass tubes intended for optical applications
- Uncut quartz glass tubes for high-temperature furnaces
- Silica tubes used in fiber optics
- Raw glass tubes for custom fabrication
- Unworked glass tubes for scientific research
- Fused quartz tubes for electrical insulation
Common questions
Frequent classification questions with short practical guidance.
How to classify unworked glass tubes?
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Is fused silica covered under HS-6 700231?
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What products fall under HS code 700231?
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How do I import glass tubes of fused quartz?
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Are there different HS codes for glass rods and tubes?
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What is the difference between HS-6 700231 and 700232?
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Can I use HS-6 700231 for finished glass products?
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Related topics
Common real-world topics that come up during code comparison.
How to determine if my glass product fits HS-6 700231
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Examples of shipments classified under HS code 700231
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Classification guidelines for unworked glass tubes
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What types of glass are included in HS-6 700231?
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Differences between unworked glass tubes and rods
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
How to handle customs for fused quartz glass tubes
Check the exact product specs and destination-country tariff notes before finalizing the code.
What to do if my product doesn't clearly fit HS-6 700231
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Understanding the requirements for importing glass tubes
Check the exact product specs and destination-country tariff notes before finalizing the code.
Questions & answers
For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.
- What types of products are classified under HS-6 700231?
- HS-6 700231 covers unworked glass tubes made from fused quartz or silica, typically used in industrial, scientific, or optical applications.
- Can I classify finished glass tubes under HS-6 700231?
- No, HS-6 700231 is specifically for unworked glass tubes. Finished products would need to be classified under different HS codes.
- What is the difference between HS-6 700231 and HS-6 700232?
- HS-6 700231 applies to unworked glass tubes, while HS-6 700232 is for unworked glass rods. Each has distinct applications and uses.
- How do I ensure my product qualifies for HS-6 700231?
- Your product must be unworked and in tube form made from fused quartz or silica. If unsure, consult a customs broker.
- What documentation do I need for importing under HS-6 700231?
- You will typically need a commercial invoice, packing list, and possibly a certificate of origin, depending on your country’s regulations.
- Are there any restrictions on importing glass tubes under HS-6 700231?
- Check with local regulations, as some countries may have specific import restrictions or requirements for glass products.
- Can I use HS-6 700231 for silica glass tubes used in electronics?
- Yes, silica glass tubes used in electronics that are unworked can be classified under HS-6 700231.
- What should I do if my product doesn't fit neatly into HS-6 700231?
- If your product has characteristics that make classification unclear, it's best to consult with a customs broker for guidance.
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