Small Diameter Alloy Steel Boiler Tubes
Seamless alloy steel tubes (OD <38.1 mm) designed for high-pressure boiler applications in power plants. Meets HTS 7304.59.80.10 criteria: seamless, circular, other alloy steel, small diameter.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If OD exceeds 38.1 mm
Larger diameter seamless alloy boiler tubes have separate statistical breakout.
If for specific boiler subassembly
Tubes pre-assembled into boiler sections classify as parts of boilers under 8410.
If not of circular cross-section
Non-circular hollow profiles shift to Chapter 72 other bars and profiles.
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Import Tips & Compliance
• ASME boiler code certification required; provide pressure rating documentation; ensure no weld repairs that could reclassify as welded
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