13CR Stainless Steel 14 inch OD Casing for Sour Gas Wells from China
Seamless 13Cr martensitic stainless steel casing with 14-inch (355.6 mm) OD and minimum 1/2 inch (12.7 mm) wall thickness for H2S-resistant sour service. Designed for high-pressure oil/gas production in corrosive formations. Classified under 7304.24.40.60 for stainless steel drill casing specs.
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 certification proving H2S resistance for sour service applications
• Wall thickness must be drift-tested and documented; customs may require ultrasonic thickness verification
• Specify exact grade (13Cr, Super 13Cr) in commercial invoice to match HTS material requirements