Alloy Steel Surface Casing for Offshore Oil Rigs from Canada
Heavy-walled welded alloy steel surface casing with 24-inch OD, deployed in offshore oil drilling to seal the upper borehole sections against formation fluids. Falls under HTS 7305.20.80.00 as other alloy steel casing exceeding 406.4 mm diameter for drilling operations. Corrosion-resistant alloy suitable for marine environments.
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 corrosion test certificates (e.g
• NACE MR0175) for sour service casings to support alloy classification
• Specify 'surface casing' end-use in entry summaries to differentiate from production tubing
• Measure and certify exact OD to avoid disputes over 406.4 mm threshold