Welded Cold-Rolled 409 Stainless Exhaust Tube
Cold-rolled welded tube made from 409 stainless steel (11% Cr), 3-inch OD, 1.7 mm wall, used in automotive exhaust systems for heat and corrosion resistance. HTS 7306.40.50.42 applies to its circular welded stainless construction, cold-reduction, and sub-15% chromium. Not seamless, distinguishing from Chapter 73 seamless tubes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of austenitic stainless steel types
Austenitic grades like 304L with specific alloying classify separately even if <15% Cr.
If imported as fan exhaust component
If integral to a fan or blower assembly for retail, it becomes a part of Chapter 84 machinery.
If threaded or coupled fittings attached
Tube fittings with threads shift to 7307 for pipe fittings of iron/steel.
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Import Tips & Compliance
• Automotive end-use requires no special markings, but include specs to avoid reclassification as parts (8708)
• Test wall thickness uniformity; variations can trigger audits
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