7304.29.10.60/9-5/8 Inch 40 lb/ft K-55 Casing/China

9-5/8 Inch 40 lb/ft K-55 Casing from China

Heavy seamless K-55 grade non-alloy steel casing with 355.6 mm OD, 12.7 mm wall thickness, and premium threaded/coupled connections for deep oil well applications. Classified under HTS 7304.29.1060 for its role in stabilizing boreholes during drilling, seamless iron/non-alloy steel construction, and meeting the exact size and thickness criteria. Ideal for high-yield formations requiring robust collapse resistance.

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

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Import Tips

• Include detailed grade certificates (e.g

• K-55 per API 5CT) and thread type specs in entry docs to confirm drilling casing use

• Measure wall thickness precisely post-manufacture; even slight under 12.7 mm risks duty rate change or penalties

• Comply with Buy America provisions if for US projects; source documentation prevents customs holds