Alloy 20Cb-3 Welded Stainless Pipe
Welded pipe of Alloy 20Cb-3 (UNS N08020), high-nickel stainless steel with wall ≥1.65 mm, circular section for sulfuric acid handling in industrial piping. HTS 7306.40.50.05 applies to its high-nickel alloy, welded, thick-walled stainless profile status.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of different high-nickel alloy
Other high-nickel alloys may fall under statistical suffixes like .50.10 for specific compositions.
If threaded or fitted for fittings
Pipe fittings of high-nickel steel classify under 7307, not plain tubes/pipes.
If for industrial boiler applications
Hollow profiles for boilers, high-nickel, may go to Chapter 72 if semi-finished form.
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Import Tips & Compliance
• Submit UNS designation and Ni% certificates; high-nickel threshold typically >25% Ni per trade rulings
• Document external diameter and wall thickness precisely; customs often verifies against 1.65 mm minimum
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