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
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Attach NACE compliance docs; critical for sour service alloy validation
• Specify exact chromium/molybdenum content for 'alloy steel' proof