What is the difference between calcined and uncalcined dolomite?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
HS-4 · Heading
2518 — Dolomite, whether or not calcined or sintered, including dolomite roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
Chapter 25: Salt; sulphur; earths and stone
Plain-language overview
Use HS-4 2518 when importing dolomite, whether it's calcined or not. For example, if you're bringing in blocks of dolomite cut into rectangular shapes for construction, this heading applies. It encompasses both raw and processed forms of dolomite, making it essential for accurate classification.
When deciding between the HS-6 lines, consider the state of the dolomite. HS-6 251810 covers dolomite that is not calcined or sintered, including those simply cut into blocks. If your shipment consists of unprocessed dolomite, this is the appropriate code.
On the other hand, if you're importing dolomite that has been calcined or sintered, you should use HS-6 251820. This line includes dolomite that has undergone heat treatment, which alters its properties and uses, often for more specialized applications in industries like metallurgy or construction.
Keywords & topics
Useful terms traders and brokers use for this HS-4 heading.
dolomite import · HS-4 2518 · calcined dolomite · uncalcined dolomite · dolomite blocks · sintered dolomite · HS-6 251810 · HS-6 251820 · dolomite classification · dolomite shipment
Examples
Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.
- Dolomite blocks for construction purposes
- Roughly trimmed dolomite slabs for flooring
- Calcined dolomite used in steel production
- Unprocessed dolomite for landscaping projects
- Sintered dolomite for chemical manufacturing
- Dolomite cut into square shapes for decorative use
Common questions
Frequent classification questions with short practical guidance.
How do I classify dolomite for import?
Use this as a comparison hint, then confirm the final decision with legal notes and country-specific rules.
What are the uses of dolomite in construction?
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Which HS code should I use for dolomite slabs?
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Is dolomite considered a mineral or a stone?
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What are the packaging requirements for dolomite imports?
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Related topics
Common real-world topics that come up during code comparison.
how to import dolomite for construction projects
Check the exact product specs and destination-country tariff notes before finalizing the code.
differences between HS-6 251810 and 251820
Compare adjacent HS lines and pick the one that matches material, function, and product form most closely.
uses of calcined dolomite in industry
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requirements for shipping dolomite blocks
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best practices for classifying dolomite imports
Check the exact product specs and destination-country tariff notes before finalizing the code.
understanding dolomite processing methods
Use this topic to narrow your shortlist, then validate the final code against legal wording.
importing dolomite for landscaping applications
Check the exact product specs and destination-country tariff notes before finalizing the code.
what to know before importing dolomite
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 dolomite are covered under HS-4 2518?
- HS-4 2518 covers both calcined and uncalcined dolomite, including those cut into rectangular blocks or slabs.
- How do I determine if my dolomite is calcined?
- Calcined dolomite has been heated to high temperatures, altering its chemical and physical properties. If unsure, consult your supplier.
- Can I use HS-6 251810 for all dolomite imports?
- No, HS-6 251810 is only for uncalcined dolomite. Use HS-6 251820 for calcined or sintered dolomite.
- What are the common uses for dolomite in construction?
- Dolomite is often used in flooring, as aggregate in concrete, and for decorative stone in landscaping.
- Are there specific packaging requirements for dolomite?
- While there are no strict packaging regulations, ensure that dolomite is securely packaged to prevent damage during transport.
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HS-6 subheadings (2)
- 251810Dolomite, not calcined or sintered; including dolomite roughly trimmed, or merely cut by sawing or otherwise into blocks or slabs of rectangular (including square) shape
- 251820Dolomite, calcined or sintered; including dolomite roughly trimmed, or merely cut by sawing or otherwise into blocks or slabs of rectangular (including square) shape