4-1/2" P110 Alloy Casing for Gas Wells from China
High-strength P110 grade seamless alloy steel casing with 10.2 mm wall thickness and 114.3 mm OD, designed for high-pressure gas well applications. Falls under HTS 7304.29.41.10 due to its seamless construction, alloy steel composition, and dimensions suitable for oil/gas drilling. Provides superior yield strength over 110 ksi per API standards.
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 detailed chemical analysis and mechanical test certificates to substantiate alloy steel classification
• Measure and document wall thickness precisely; values ≥12.7mm shift to different statistical suffix
• Check country-of-origin rules as certain alloy casing faces additional Section 232 tariffs