6806.90.00.90/Foamed Slag Thermal Block/Mexico

Foamed Slag Thermal Block from Mexico

Lightweight blocks produced from expanded foamed slag, used for insulated concrete forms in construction. Falls under HTS 6806.90.00.90 as an expanded mineral material article for heat-insulation, not refractory products of chapter 69.

Duty Rate — Mexico → 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

• Certify compressive strength to differentiate from Chapter 69 refractories

• Include production process docs showing expansion without high-temperature firing

• Watch for weight-based duties; declare accurately to avoid under-valuation penalties

Foamed Slag Thermal Block from Mexico — Import Duty Rate | HTS 6806.90.00.90