18-5/8 Inch 87.5 lb/ft Super Duplex Stainless Casing from China
Super duplex stainless steel (2507 grade) seamless casing pipe with 18-5/8 inch OD, 87.5 lb/ft, VAM 21 threaded connections, for high-pressure high-temperature (HPHT) gas wells. Classified in 7304.24.30.80 for large diameter threaded stainless steel seamless oil/gas casing.
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 (35-65%); non-conforming material faces rejection
• Use FDA-equivalent cleanliness standards if any food-grade certification claimed erroneously
• Bundle with coupling stock under same entry but separate line items to avoid averaging issues