10-3/4 inch 85# P-110 Casing with BTC Coupling from Japan
Heavy-wall seamless P-110 grade alloy steel casing for high-pressure oil wells, 10-3/4 inch OD (273 mm), 85 lb/ft, with buttress thread couplings (BTC) and wall thickness over 12.7 mm. Used in drilling for oil or gas to line boreholes and isolate formations. Fits 7304.29.31.40 for its alloy steel, seamless, threaded/coupled design in the specified OD and thick-wall range.
Duty Rate — Japan → United States
10%
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
Import Tips
• Include detailed dimensional specs and grade certifications in entry docs; BTC couplings must be documented separately from premium threads
• Common pitfall: misdeclaring weight per foot leading to wrong OD classification
• Comply with API Monogram requirements for U.S. market acceptance