Alloy 600 Seamless Heater Exchanger Tube
Seamless Inconel Alloy 600 tube for fire-tube heaters and heat exchangers in petrochemical service, offering oxidation resistance above 1000°C. Classified in HTS 7304.59.60.00 for heat-resisting seamless steel tubes of circular cross-section.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If with mechanical connections/fittings
Added couplings or flanges make them pipe fittings rather than plain tubes.
If as complete heat exchanger subassembly
Assembled into machinery parts under Chapter 84 for heat exchange equipment.
If not heat-resisting but other alloy types
Standard alloy steels without specific heat-resistance fall into other 'other' alloy provisions.
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Import Tips & Compliance
• Require U-tube or straight tube certifications distinguishing from finned heat exchanger parts
• Confirm no internal threading that could classify as drill pipe or casing
• Undervaluing scrap content in alloys leads to penalties; declare true alloy value
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