7304.29.41.50/API 5CT L80 Alloy Steel Oil Well Casing/China

API 5CT L80 Alloy Steel Oil Well Casing from China

Seamless L80 grade alloy steel casing pipe used in oil and gas drilling operations, with an outside diameter of 339.7 mm and wall thickness of 10.5 mm. Classified under HTS 7304.29.4150 due to its seamless construction from alloy steel, specific OD range exceeding 285.8 mm but not over 406.4 mm, and wall thickness under 12.7 mm for oilfield casing applications.

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

• Verify API 5CT certification and provide mill test certificates (MTC) showing chemical composition and mechanical properties for alloy steel

• Confirm exact OD (285.8-406.4 mm) and wall thickness (<12.7 mm) measurements to avoid misclassification into thicker wall subheadings

• Include end-use declaration as oil/gas drilling casing to distinguish from structural pipes; watch for anti-dumping duties on certain alloy steel pipes