13-3/8 inch 68 lb/ft L-80 Type 13Cr Casing from China
Seamless alloy steel oil well casing pipe with 13-3/8 inch outside diameter, 68 lb/ft weight, L-80 grade with 13% chromium content for corrosion resistance in sour gas environments. Features API STC threaded couplings and wall thickness exceeding 12.7 mm, classified under HTS 7304.29.31.20 for heavy-duty drilling applications in oil and gas wells.
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
• Obtain Mill Test Certificates (MTC) verifying chemical composition and mechanical properties per API 5CT specs; ensure API monogram marking for customs verification
• Declare exact OD, wall thickness, and grade to avoid reclassification; common pitfall is misstating weight per foot leading to wrong statistical suffix