3-1/2 inch Super Duplex Tubing
Welded super duplex stainless steel (grade 2507) tubing, 3-1/2 inch in diameter, designed for ultra-corrosive oil and gas wells with high chloride content. This product is used as tubing in drilling operations and is classified under tariff item 7306.21.00 as welded stainless steel casing and tubing.
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 tubing is seamless rather than welded
Seamless stainless steel casing and tubing for oil or gas drilling falls under heading 7304.
If the tubing is welded but not of stainless steel
Welded casing and tubing of other alloy steel is classified under this item.
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
• Ensure the tubing meets CSA or API standards and provide a Mill Test Certificate to verify the 2507 grade
• Declare the correct end use (drilling for oil or gas) to avoid reclassification
• Consult the CBSA tariff classification advice if unsure about the welded stainless steel specification
Related Products under Tariff item 7306.21.00
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