Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel › Line pipe of a kind used for oil or gas pipelines
Articles the product of the Russian Federation, as provided for in U.S. note 30(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 30(d) to this subchapter
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