9-5/8 inch OD API 5CT K55 Oil Well Casing from Japan
Threaded and coupled seamless K55 grade casing with 9.625 inch (244.5 mm) OD and 11.2 mm wall thickness for oil drilling applications. Fits 7304.29.10.30 as seamless nonalloy steel drill pipe/casing, OD 215.9-285.8 mm range, wall under 12.7 mm. Used to isolate production zones in wells.
Duty Rate — Japan → United States
50%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Submit detailed dimensional certificates; inspectors often check OD (must be 215.9+ mm) and wall caliper measurements
• Avoid classifying as drill pipe if not beveled for rotation—pure casing stays here
• Include collapse/ burst test data per API 5CT to demonstrate oil/gas drilling use