Refining Furnace Alloy Tube 90mm OD
Seamless alloy steel tube, 90 mm OD, built for refining furnaces to handle corrosive gases and high heat. Classified under HTS 7304.59.20.45 for its suitability in refining furnaces, circular seamless profile, and diameter range.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-formed and ferritic stainless
Specific stainless types with cold-forming features use different subheadings in 7304.51.
If longitudinally submerged arc welded
Welded furnace tubes classify under 7305 for alloy steel welded pipes.
If certain other diameters in sub-ranges
Precise OD measurements may align with adjacent statistical breaks.
Not sure which classification is right?
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Import Tips & Compliance
• Include material safety data sheets highlighting high-temperature alloy properties for furnace use
• Certify seamless nature via non-destructive testing reports
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