4 inch OD Alloy Steel Oil Well Casing Pipe from China
Seamless alloy steel casing pipe with 4 inch (101.6 mm) outside diameter and 9.2 mm wall thickness, used to line oil and gas wells during drilling. Premium grade P110 alloy steel for high-pressure environments. Classified in 7304.23.6030 for seamless alloy steel OD ≤168.3 mm, wall ≤9.5 mm.
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 ITP (Inspection Test Plan) and third-party inspection reports (SGS/BV)
• Specify if BTC, STC, or premium connections; connection type affects valuation
• Avoid classifying as line pipe (7304.90) - must prove drilling well use via end user declaration