904L Stainless Refinery Heater Tube
Seamless 904L (N08904) high nickel stainless tube for convection sections of refinery process heaters. Copper-bearing alloy resists polythionic acid stress corrosion. 7304.49.0045 for refining furnace suitability.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered hollow drill bars
Heavy wall ratios may classify as bars not tubes.
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Import Tips & Compliance
• Copper content verification (>1.0%) critical for 904L PCC resistance
• Heater zone location (radiation vs convection) affects material choice docs
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