Heavy Wall Seamless Steel Casing Tube
Seamless nonalloy steel tube with wall thickness of 4 mm or more, used as protective casing in oil well drilling. It qualifies for HTS 7304.90.10.00 as a seamless hollow profile of iron/nonalloy steel meeting the wall thickness criterion.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded and for oil/gas casing
Welded casing pipes classify under 7306.19 for other welded steel pipes.
If wall under 4 mm
Thinner walls move to the general 'other' seamless tube category.
If imported as part of drilling rigs
If assembled into machinery sets for drilling, it falls under Chapter 84 parts.
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
• Provide OCTG (Oil Country Tubular Goods) specs; mislabeling as drill pipe risks reclassification
• Ensure hydrostatic test reports confirm pressure rating suitable for thick-wall use
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