Non-Alloy Seamless Boiler Tube 9-inch OD 22mm Wall
Seamless tube of iron or non-alloy steel, 228.6 mm OD with 22 mm wall thickness, for high-temperature boiler applications in power plants. HTS 7304.39.0056 applies to its circular cross-section, seamless manufacture, and dimension specs fitting the heavy-duty tube category. Withstands steam pressures in industrial heating systems.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-drawn or finished
Cold-worked seamless boiler tubes over 114.3 mm OD shift to specific cold-drawn headings.
If as parts of boilers
Tubes specifically shaped/fitted for boilers may classify as parts under boiler heading 8413.
If threaded or with fittings
Tube/pipe fittings or threaded ends change classification to Chapter 73 heading 7307.
Not sure which classification is right?
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Import Tips & Compliance
• ASME SA-106 certification required for boiler code compliance; measure wall thickness precisely post-manufacture
• Avoid pitfall of declaring as 'alloy' if carbon steel only
• Submit heat treatment records
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