Chrome-Moly Seamless Pipe for Power Plant Boilers
P11 grade chrome-molybdenum alloy seamless pipe for superheater tubes in utility boilers, 14-inch OD (355.6 mm), 21 mm wall. Its alloy steel seamless nature and dimensions place it squarely in HTS 7304.59.80.70.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn with OD <114.3 mm
Smaller cold-drawn boiler tubes fall into precision 7304.51 categories.
If welded and for boiler use
Welded boiler tubes shift to 7306.50 even if same alloy and dimensions.
Not sure which classification is right?
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Import Tips & Compliance
• ASME SA335 certification required to verify boiler tube quality and alloy composition
• Heat treatment records prove normalized/annealed condition for proper tariff and safety compliance
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