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
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
• 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