4-1/2 Inch N80 Type 304 Stainless Casing from Canada
Seamless Type 304 stainless steel casing pipe per API 5CT N80 grade, 4-1/2 inch OD (114.3 mm), 9.19 lb/ft weight with 8.56 mm wall thickness, featuring BTC (Buttress Threaded and Coupled) connections. Used to stabilize wellbore during oil and gas extraction. Classified under 7304.24.30.10 for stainless steel seamless casing with OD <215.9 mm and thin walls.
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
• Include hydrostatic test reports and chemical composition analysis proving stainless steel grade and seamless manufacture
• Label shipments clearly as 'oil well casing' to prevent confusion with line pipe or structural tubing
• Verify coupling specifications match API standards to avoid reclassification as uncoupled tubing