3-1/2 Inch Duplex Stainless Steel Drill Casing from China
Seamless duplex stainless steel (e.g., 2205 grade) casing pipe with 3.5 inch (88.9 mm) OD and 9 mm wall thickness for high-pressure oil drilling. Classified in HTS 7304.24.40.10 as stainless steel casing under 215.9 mm OD with thin walls for oil/gas applications.
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
• Include material grade certificates (e.g
• ASTM A790 for duplex) to substantiate stainless steel classification
• Avoid common pitfall of declaring as 'tubing' instead of 'casing' which could lead to 7306 headings
• For sets with couplings, declare as individual lengths unless permanently assembled per GRI 2(a)