Cold-Drawn U-Tube for Heat Exchangers
Seamless cold-formed U-shaped carbon steel tube for removable bundles in process heat exchangers, nonalloy steel with 0.8-2.0 mm wall. Designed for thermal expansion in refining service. 7304.31.60.10 classification for cold-reduced tubes in heat exchangers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported with attached return bends
Tubes with permanent fittings become tube or pipe fittings.
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
• Document U-bend radius and leg length specs critical for exchanger fit-up
• Certify cleanliness level for process fluid compatibility
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