P5 Alloy Seamless Refining Furnace Tube
ASME SA-335 P5 (5% Cr, 0.5% Mo) seamless tube, 14-inch (355.6 mm) OD, for refining furnace tubing in petrochemical refineries. Classified in HTS 7304.59.20.70 for refining furnace suitability, alloy steel, seamless, 285.8-406.4 mm OD.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not certified for refining furnaces or boilers
General other alloy steel tubes without specific end-use suitability fall into broader 7304.39 categories.
If sold as sets with flanges for installation
Packaged as tube sets with fittings for refinery use classifies as tube or pipe fittings under 7307.
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Import Tips & Compliance
• Document high-temperature creep strength certification; bulk import requires mill test certificates for each heat lot; avoid pitfall of generic 'pipe' declaration
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