Tungsten Carbide Buttons for Rock Drilling from Canada
Hemispherical tungsten carbide buttons inserted into drill bits for mining. HTS 2849.90.30.00 for these sintered, unmounted carbide pieces. Provides extreme hardness for hard rock penetration.
Duty Rate — Canada → United States
5.5%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Certify as loose buttons, not assembled bits; check AD/CVD on origins
• Pitfall: brazed buttons become 8207.19 finished tools