Impreg Diamond Rotary Rock Drill Bit from Japan
A rotary rock drill bit featuring impregnated synthetic diamonds in a tungsten carbide matrix for hard rock drilling in mining operations. It falls under HTS 8207.19.30.60 due to its classification as a rotary rock drill bit with cutting edges containing over 0.2% tungsten by weight. Designed for high-penetration rates in abrasive formations like quartzite.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Verify alloy composition certificates to confirm chromium, molybdenum, tungsten, or vanadium thresholds for subheading compliance
• Ensure bits are specifically designed for rock drilling to avoid reclassification as machine tool accessories
• Provide drilling application documentation during customs valuation