13-3/8 Inch P110 Casing with BTC Threads from China
High-strength P110 grade seamless alloy steel casing, 13-3/8 inch (339.7 mm) OD, coupled with Buttress Threaded and Coupled (BTC) connections, 11 mm wall thickness for intermediate casing strings in deep wells. Classified under HTS 7304.29.31.50 for its alloy steel composition, specified OD range, and thin wall.
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
• Provide detailed thread profile certification (BTC vs STC/HTC) as mismatches lead to reclassification
• Ensure heat treatment records show quenching and tempering for P110 grade to meet customs material verification