Alloy Steel Feedwater Heater Tube 18" OD
Seamless 457.2 mm (18-inch) OD tube from 2.25Cr-1Mo alloy steel for feedwater heaters in steam cycles. Corrosion-resistant U-bend configuration for heat exchange efficiency. Under 7304.59.20.80 as large-diameter seamless alloy tube explicitly for feedwater heaters.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn and OD ≤406.4 mm
Cold-drawn processing and smaller size move to 7304.41; hot-finished large OD stays in 7304.59.
If welded and stainless steel
Stainless welded tubes for similar uses classify under 7306.30, separate from seamless.
If imported as complete condenser spare part set
Assembled with baffles/supports for retail sale as heat exchange machinery parts under Chapter 84.
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Import Tips & Compliance
• Submit condenser tube sheet compatibility analysis if specified; affects end-use verification
• Use SI and imperial OD markings consistently to match commercial invoice specs
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