6806.20.00.00/Expanded Clay Geothermal Fill/Japan

Expanded Clay Geothermal Fill from Japan

Expanded clay aggregate used as backfill around geothermal heat exchanger loops for thermal conductivity. HTS 6806.20.00.00 classification for expanded mineral materials in energy applications. Prevents loop settling.

Duty Rate — Japan → United States

10%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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Import Tips

• Include thermal conductivity specs (1.5-2.0 W/mK typical)

• Declare borehole backfill end-use for customs context

• High moisture tolerance certification for underground applications

Expanded Clay Geothermal Fill from Japan — Import Duty Rate | HTS 6806.20.00.00