T95 Sour Service Tubing from China
T95 grade tubing qualified for sour service per NACE standards, used in H2S-rich gas reservoirs. HTS 7306.29.81.50 captures this as other drilling tubing with specialized metallurgy. Hardness controlled below 22 HRC for sulfide stress cracking 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
Import Tips
• Include NACE MR0175/ISO 15156 certificates mandatory for sour service claims
• Segregate from non-sour materials during transport to maintain integrity