4-1/2 Inch C-90 Threaded Liner Casing
C-90 grade 4-1/2 inch threaded liner casing for hanging in existing wellbores during remedial oil work. Meets HTS 7306.29.31.00 criteria as coupled welded steel tubing/casing for gas/oil drilling. Enables zonal isolation in extended wells.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as tubing rather than casing
Tubing for drilling has parallel structure but separate subheading.
If externally coated or lined
Coated/lined pipes move to dedicated provisions.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Specify liner hanger compatibility in docs if applicable
• Galvanized variants need surface treatment declarations
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