Grade 347H Seamless Feedwater Heater Tube
Stabilized 347H seamless alloy tube, 120 mm OD, for feedwater heaters resisting intergranular corrosion after welding. ASME-approved for power plant closed feedwater systems. Fits 7304.59.20.55 criteria: alloy steel, circular seamless, heater-suitable, specified diameter.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If threaded or with fittings
Tube fittings or connected assemblies classify under 7307.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include grain size verification for H-grade; ensure clean bill of lading free of oil contamination
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