ASTM A213 T22 Seamless Alloy Steel Heat-Exchanger Tube
Seamless tube of 2.25% chromium-1% molybdenum alloy steel (ASTM A213 T22) for heat exchangers, featuring wall thickness of 4 mm or more. Classified under HTS 7304.90.30.00 due to its seamless construction, alloy composition, and thick walls for high-temperature fluid transfer.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness under 4 mm
Thinner-walled alloy steel seamless tubes fall under 7304.59, changing duty structure.
If carbon steel composition
Lacks alloying elements defining 'alloy steel,' moving to carbon steel seamless tubes.
If for industrial machinery end-use as a set component
If imported as part of a complete heat exchanger machine, classifies under machinery parts.
Not sure which classification is right?
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Import Tips & Compliance
• Provide heat treatment records (normalized and tempered) to confirm compliance with ASTM specs
• Measure and certify exact wall thickness to avoid reclassification to thinner-wall subheadings
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