20 Inch X-52 Coupled Conductor Casing
X-52 grade 20-inch conductor casing with couplings for initial well drilling phases in offshore oil platforms. Classified in HTS 7306.29.31.00 for large-diameter threaded welded steel used in oil/gas drilling. Designed for structural support in marine environments.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If longitudinally submerged arc welded (LSAW)
Specific welding process for large OD pipes shifts heading.
If part of floating drilling platforms
Incorporated into vessels or floating structures changes to Chapter 89.
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
• For oversized shipments, pre-notify port authorities for crane/heavy lift requirements
• Anti-dumping duties apply to certain origins; check USTR lists
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