17-1/2 inch 98 lb/ft Sour Service Casing from China
17-1/2 inch OD (444.5 mm >406.4 mm) seamless alloy steel casing, 98 lb/ft, H2S-resistant for sour gas drilling. Under HTS 7304.29.4180 as other alloy seamless large-diameter casing for oil/gas. Meets stringent NACE standards for corrosive 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
• Attach NACE compliance docs; critical for sour service alloy validation
• Specify exact chromium/molybdenum content for 'alloy steel' proof