4-1/2 Inch 12.6 lb/ft N80-1 Stainless Casing
Seamless stainless steel liner casing, 4-1/2 inch, N80-1 grade, threaded and coupled for intermediate hole sections in horizontal drilling. Its stainless steel composition and seamless construction qualify it under tariff item 7304.24.00 as other seamless casing for oil/gas drilling.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the casing is not stainless steel
Non-stainless steel casing for oil/gas drilling is classified under this item.
If used as line pipe
Stainless steel line pipe for oil/gas pipelines is classified separately.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide API 5CT certification to confirm N80-1 grade and stainless steel properties
• Ensure the threads are protected during transport to avoid damage
• Declare the exact dimensions and weight for accurate duty calculation
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