</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →
2508.30.00.00/Fire-Clay Grogs/China

Fire-Clay Grogs from China

Fire-clay grogs are crushed and screened particles of fired clay used as aggregate in refractory mixes. They qualify under HTS 2508.30.00.00 as fire-clay (chamotte or dinas earths), valued for thermal stability in castables. Common in foundry and boiler applications.

Duty Rate — China → United States

12.5%

Rate breakdown

9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Calculate with your customs valueVerify classification with AI

Import Tips

• Declare particle size distribution to distinguish grogs from powder; uniform sizing avoids bulk mineral reclassification

• Certify as chamotte (fired then crushed) vs raw clay for accurate sub-description within 2508.30

• Avoid packaging suggesting retail sets, which could trigger Chapter 68 for articles

Fire-Clay Grogs from China — Import Duty Rate | HTS 2508.30.00.00