Heavy Wall Welded Refinery Furnace Tube
Welded nonalloy steel tube, circular cross-section with wall ≥1.65 mm, for process furnace tubes in oil refineries handling high-temperature petrochemical reactions. Resists thermal stress in cracking furnaces. HTS 7306.30.5010 due to refinery furnace suitability.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If alloy steel construction
High-temperature alloys for furnaces classify under alloy tube headings.
If seamless rather than welded
Seamless furnace tubes use 7304 for seamless pipes/tubes of iron/steel.
If other cross-sections (not circular)
Non-circular hollow profiles classify under 7306.90, separate from circular tubes.
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Import Tips & Compliance
• Supply API or ASME specs confirming refinery furnace application and high-temp ratings
• Confirm nonalloy composition; alloy tubes shift to 7306.40.50.10
• Watch for reclassification if imported in sets with fittings (potential 7307 or 7326)
Related Products under HTS 7306.30.50.10
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