4-1/2 Inch N80 Casing for Gas Wells from China
Seamless N80 nonalloy steel casing with 114.3 mm OD and 7.0 mm wall thickness, used to stabilize gas well bores during drilling operations. Classified under HTS 7304.29.20.10 due to its seamless construction, nonalloy steel material, and specified dimensions for oil/gas drilling 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
Import Tips
• Include thread type specifications (e.g
• LTC, STC) in documentation as they affect fitting compatibility but not HTS classification
• Conduct hydrostatic test certificates must show pressure ratings compliant with API standards