4-1/2 Inch Intermediate Casing Coupled from China
4-1/2 inch intermediate casing of nonalloy steel, seamless with flush threaded couplings for mid-depth oil well support. Prevents formation damage during drilling. 7304.29.10 due to threaded/coupled design for drilling applications.
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
• Ensure 'range 2' or 'range 3' length specs are noted; short joints may classify differently
• Batch testing for sulfur/phosphorus content prevents nonalloy disputes at entry
• Use protective dope on threads; contamination leads to quality claims and delays