Tunnel Boring Machine Head from Canada
Rotary cutting head assembly for small-diameter tunnel excavation in soft ground urban projects. HTS 8430.49.80 covers this as other boring machinery for earth, excluding full TBMs often self-propelled.
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
• Include cutter wheel specifications showing earth/rock compatibility for proper earth boring classification
• Document intended tunnel diameter (<3m typically qualifies as 'other' vs heavy tunnelers)