Tunnel Boring Machine Head from Canada
The cutting head assembly of a tunnel boring machine drills through earth and rock formations for underground construction. It qualifies under HTS 8430.49.8050 as other boring machinery for earth when not a complete TBM system.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit engineering drawings showing cutter configuration for earth/rock boring verification
• Include weight and diameter specs for proper duty calculation
• Avoid misclassification by confirming assembly requires mounting on carrier machine