3-1/2 Inch N80Q Quasi-Premium Tubing from Canada
3-1/2 inch N80Q quasi-premium tubing, seamless nonalloy steel with enhanced collapse resistance for sour gas drilling. Features special heat treatment per API 5CT. Classified under HTS 7304.29.50 for nonalloy drill tubing.
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
• Sour service requires H2S testing per NACE MR0175 for customs verification
• Quasi-premium connections need connection test data beyond standard API
• Avoid generic 'oil pipe' descriptions—specify 'API 5CT tubing' explicitly