Planed Chalk Stone Tiles
Chalk, a soft calcareous sedimentary rock, is simply sawn or planed into thin tiles for indoor flooring or blackboard backing. Classified in HTS 6802.29.10.00 as worked calcareous building stone with flat surfaces, excluding slate.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If travertine type
Travertine calcareous stone has its own subheading due to distinct porous structure.
If impregnated or coated for sealing
Surface-treated stone boards shift to Chapter 68 articles of plaster or compositions.
If chemically bonded into agglomerated articles
Mixed with binders, calcareous stone becomes other artificial stone under 6810.
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Import Tips & Compliance
• Test for calcium carbonate content (>90%) to confirm calcareous nature over siliceous chalk
• Specify 'simple planing/sawing' in invoices; polishing disqualifies from this subheading
Related Products under HTS 6802.29.10.00
Planed Lithographic Limestone Slabs
Fine-grained lithographic limestone (calcareous Solnhofen type) sawn flat for potential printing or architectural use. Excluded litho stones are 8442, but building slabs stay in 6802.29.10.00.
Sawn Cement Rock Stone Blocks
Cement rock, an argillaceous calcareous limestone for cement production but usable as building stone, sawn into blocks. HTS 6802.29.10.00 if simply cut for monumental/building purposes.
Sawn Dolomitic Limestone Panels
Dolomitic limestone with predominant calcite (calcium carbonate) is sawn into panels for veneers and garden features. HTS 6802.29.10.00 for calcareous (calcite-rich) stone simply worked.
Cut Coquina Shellstone Blocks
Coquina, a limestone from cemented seashells (calcareous), is cut into blocks with flat faces for rustic walls and fireplaces. Fits HTS 6802.29.10.00 as simply sawn calcareous building stone.
Sawn Limestone Building Blocks
These are rectangular limestone blocks, simply sawn with flat surfaces, used primarily for constructing exterior walls and facades in residential and commercial buildings. Classified under HTS 6802.29.10.00 as calcareous stone (limestone is primarily calcium carbonate) that is other than marble, travertine, or alabaster, and worked only by simple cutting or sawing without further shaping.
Cut Tufa Stone Slabs
Tufa, a porous calcareous stone formed by mineral springs, is sawn into flat slabs for use in garden walls and decorative landscaping features. It fits HTS 6802.29.10.00 as a non-marbly calcareous building stone that is simply cut or sawn with even surfaces.