11-7/8 inch 54 lb/ft Super Duplex Stainless Tubing from China
Super duplex stainless steel (e.g., 2507) seamless tubing, OD 298.5 mm (11-7/8 inches), for high-strength casing in aggressive subsea gas environments. HTS 7304.24.60.60 covers its seamless stainless steel form and diameter for oil/gas drilling use. Duplex structure resists pitting and stress corrosion.
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 detailed alloy certs (PREN >40); generic 'stainless' declarations rejected
• Measure and declare ID/OD precisely—tolerances affect pressure rating classification
• Partner with licensed customs broker familiar with API oilfield tubing rulings