317L Stainless Steel Feedwater Heater Tube
Corrosion-resistant welded 317L stainless tubes with thick walls for feedwater heaters in steam cycles, preventing stress corrosion cracking. The higher molybdenum content enhances pitting resistance. Meets HTS 7306.40.50.15 criteria for welded stainless tubes in feedwater heaters.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless cold-drawn equivalents
Seamless feedwater tubes classify separately from welded in heading 7304.
If having wall thickness less than 1.65 mm
Thinner walls move to adjacent statistical suffixes within the same welded SS tube category.
If imported in bulk coils for further processing
Unfinished tube in coil form may classify as semi-manufactures rather than finished tubes.
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Import Tips & Compliance
• Include purchase specifications highlighting feedwater heater end-use for proper classification
• Maintain records of non-destructive testing (NDT) like hydrostatic or eddy current for quality assurance
• Confirm stainless steel definition per Chapter Note 1 (min 1.2% chromium) with analysis certificates
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