Alloy 20 Seamless Cold-Drawn Tubing
Cold-drawn seamless tubing of Carpenter 20Cb-3 (Ni 32-38%), external diameter <19 mm, used in sulfuric acid environments. HTS 7304.41.30.05 applies for its high-nickel stainless seamless cold-formed circular profile.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not high-nickel alloy steel
Standard stainless cold-drawn tubes (<114.3mm OD) under 7304.49, differentiated by alloy chemistry.
If Threaded stainless tubes classify under 7307 as tube fittings, not plain tubes.
If imported as turbocharger housing component
End-use in machinery parts shifts to 8411 for turbojet/turbine components if purpose-built.
Not sure which classification is right?
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Import Tips & Compliance
• Label with exact alloy grade and Ni percentage; customs may test for high-nickel verification
• Include production process affidavits confirming cold-reduction from seamless billet
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