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HTSUS, United States

3816.00.20.50

Other

Classification path

  1. Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801
  2. Other
  3. Other

Rates of duty

General (MFN)
3%
Column 2Cuba, North Korea, Russia, Belarus
30%
Unit of quantity
kg

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 3816

About heading 3816

Refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, other than products of heading 3801

Heading 3816 covers refractory cements, mortars, concretes and similar compositions, including dolomite ramming mix, but not products of heading 3801. The declarable lines split dolomite ramming mix from other compositions. Other compositions are split into clay and other.

Full guide to heading 3816

Products in this heading

  • Dolomite ramming mix
  • Clay-based refractory mortar
  • Non-clay refractory mortar
  • Refractory castable concrete mix
  • Refractory gunning mix
  • Refractory patching cement
  • Refractory furnace lining concrete

Frequently asked questions

What is the HTS code for dolomite ramming mix?

Use 3816.00.10.00; the general (MFN) rate is Free.

What is the duty on clay-based refractory mortar?

The general (MFN) rate for 3816.00.20.10 is 3%.

How do I classify refractory concrete that is not dolomite and not clay-based?

Classify it in 3816.00.20.50; the general (MFN) rate is 3%.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 3816.00.20.50: Other, 3% duty | HTSBase