API 5CT N80-1 Casing Tubing from China
Seamless steel tubing conforming to API 5CT N80-1 specifications, designed for use as casing or tubing in oil and gas drilling operations to line boreholes and transport fluids. It falls under HTS 7306.29.81.50 as 'other' casing and tubing of iron or steel, not specified elsewhere in the subheading for drilling applications. The tubing has a wall thickness suitable for high-pressure downhole environments.
Duty Rate — China → United States
35%
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Verify API 5CT certification and provide mill test certificates (MTC) to confirm compliance with oilfield standards during customs inspection
• Ensure accurate declaration of outer diameter, wall thickness, and grade to avoid misclassification as line pipe or drill pipe