3-1/2 inch Super Duplex Tubing from China
Welded super duplex stainless (2507 grade) tubing, 3-1/2 inch, for ultra-corrosive oil/gas wells with high chloride content. HTS 7306.21.80 covers this welded stainless product designed explicitly for drilling tubing applications. Maximizes uptime in subsea completions.
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
• Super duplex requires ferrite content verification (40-60%) in material certs
• Use threaded-and-coupled (T&C) descriptions accurately for connection type