Bonded abrasives (grinding wheels, stones, and similar articles) are generally classified in HTS Chapter 68, while coated abrasives (sandpaper, abrasive cloth) fall under a separate heading. The physical form — whether the abrasive grain is embedded in a matrix or applied to a flexible backing — drives the classification decision and can affect applicable duty rates.

Yes. Certain abrasive products, particularly grinding wheels and related bonded abrasives from specific origins, have been subject to antidumping duty orders. Importers should check the current scope of any active orders with the US Department of Commerce before finalizing sourcing decisions.