K55 Surface Casing from Canada
K55 grade surface casing to stabilize shallow formations during initial drilling phases of oil and gas wells. Under HTS 7306.29.81.50 as other casing, provides structural support before deeper strings. Common 13-3/8" diameter for conductor applications.
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
• Document coupling type (STC/LTC/BTC) explicitly for customs tariff verification
• Use steel racks over wooden for heavy casing to meet phytosanitary standards
• Avoid describing as 'structural pipe' to prevent general pipe classification