TP321 Stainless Feedwater Heater Tube
Seamless TP321 stabilized stainless steel tube for high-pressure feedwater heaters in thermal power stations, resistant to intergranular corrosion. Circular cross-section engineered for deaeration and preheating processes. Qualifies for 7304.49.0045 due to feedwater heater suitability and seamless stainless steel makeup.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard carbon steel versions
Lower cost carbon steel feedwater tubes use non-stainless classification 7304.41.
If other alloy steel, cold-drawn
Different alloy compositions or finishes move to 7304.59 statistical categories.
If imported as boiler subassembly parts
Parts of complete boilers classify under 8402 rather than standalone tubes.
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
• Certification of titanium stabilization essential for TP321 to prevent weld decay in heater service
• Include design pressure/temperature ratings matching feedwater heater specs (typically 100-200 bar)
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