Alloy Steel Boiler Tube for Power Plants
Seamless tubes of alloy steel, 177.8 mm OD and 28 mm wall thickness, designed for superheated steam conveyance in utility boilers. Classified in 7304.59.80.40 as seamless, alloy, circular, within OD limits, thick-walled.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If ferritic stainless alloy
Certain stainless alloys classify under cold-drawn ferritic headings.
If for retail sale in lengths
Welded versions or retail-packaged pipes shift to 7306 for other uses.
If OD 114.3 mm or less
Smaller diameter seamless alloy tubes have separate statistical breakout.
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Import Tips & Compliance
• Provide hydrostatic test results proving pressure integrity for boiler applications
• Avoid misclassification as line pipe (7304.29/59.10); specify non-API 5L grades
• Include heat treatment records showing normalized/annealed condition
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