Precast Concrete Tunnel Segments from Canada
Ring segments of reinforced concrete for tunnel lining in underground civil engineering projects like subways. Precision-cast with gasket grooves for watertight assembly, under HTS 6810.91.00.00. Essential for segmental tunnel boring machine construction.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide hydrostatic pressure test results for water resistance claims
• Mark segments with sequential numbers for assembly sequence verification
• Ensure tolerances meet TBM specifications in technical data sheets