Step Reamer for Hard Rock Drilling from Mexico
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 — Mexico → United States
15%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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