SA-335 P11 Seamless Refinery Furnace Tube
1.25Cr-0.5Mo (P11) seamless alloy tube, 130 mm OD, for transfer lines in refining furnaces and crackers. Hot-finished for high-temperature hydrocarbon service with good resistance to sulfidation. Classified in 7304.59.20.55 as other alloy steel seamless pipe suitable for refining furnaces, diameter compliant.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically suitable for high-temp equipment
General alloy steel tubes without boiler/refinery notation classify under other subheadings.
If imported within complete condenser units
Integral parts of condensers classify with the machinery, not separately.
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
• Ensure sulfur content meets refinery specs (<0.005%); provide NDT reports
• Common issue: valuation disputes on heat-treated vs as-rolled condition
Related Products under HTS 7304.59.20.55
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P9 9Cr-1Mo Seamless Boiler Tube
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800HT Superheater Tube
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SA-213 TP304 Seamless Alloy Steel Boiler Tube
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