Cold-Rolled 321 Stainless Steel Heat Exchanger Tubing
Seamless 321 stainless steel tubing cold-rolled with enhanced corrosion resistance for shell-and-tube heat exchangers in chemical processing. Falls under HTS 7304.41.60.45 as unspecified cold-formed seamless stainless tubes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as complete heat exchanger elements
Assembled tube bundles classify under heat exchanger machinery heading.
If of other stainless steel grades
Different statistical suffixes exist for non-304/316 type stainless alloys.
If with attached fittings or flanges
Tube fittings and assemblies classify under pipe fittings heading.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide U-tube bend specifications if applicable; straight lengths stay as tubing, bent as heat exchanger parts
• Hydrostatic test certificates required for pressure-rated exchanger tubing
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