Step Reamer for Hard Rock Drilling from Japan
Multi-step tungsten carbide reamer for progressive hole enlargement in hard rock tunneling and raise boring. Falls under HTS 8207.19.30.60 due to rotary reamer design with molybdenum-enhanced carbide (over 0.2%). Used in underground construction.
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
• Specify step diameters and progressive boring function in technical descriptions
• Molybdenum content certification essential for subheading
• Differentiate from pipeline reamers used in softer soils