16-Inch OD Welded Oil Well Casing from China
Heavy-duty welded casing tube of nonalloy steel with 16-inch (406.4+ mm) external diameter, used in oil drilling to prevent borehole collapse and protect aquifers. Falls under HTS 7305.20.4000 as 'other' non-seamless casing for drilling applications. Features high collapse resistance for intermediate casing strings.
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
• Provide detailed threading specs (e.g
• BTC, STC) and coupling data in entry docs to distinguish from tubing
• Label as 'drilling casing' explicitly; generic 'steel pipe' invites scrutiny under 7306 other welded pipes
• Watch for country-of-origin rules; many suppliers from China/India require Section 232 steel tariffs verification