P91 Alloy Steel Tube for Refining Furnace
Grade P91 (9Cr-1Mo-V) seamless tubes are engineered for cracking furnaces in oil refineries, enduring severe thermal cycling and carburizing atmospheres. Their circular seamless construction supports high-pressure hydrocarbon processing. Meets 7304.59.20 for tubes suitable for refining furnaces.
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If for oil/gas drilling applications
Same material but drill pipe end-use shifts to specific casing provisions.
If turbojet engine components
High-temperature alloys for gas turbines classify under aircraft engine parts.
If welded rather than seamless
Welded alloy tubes for similar uses fall under welded pipe headings.
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Import Tips & Compliance
• Submit heat treatment records showing normalized and tempered condition for P91 grade
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