Duplex 2205 Seamless Refining Furnace Tube
Seamless Duplex 2205 (S31803) stainless steel tube for process furnace tubes in oil refineries, offering superior SCC resistance in sulfur-rich environments. Circular cross-section for cracking and reforming furnace coils. Included in 7304.49.0045 for refining furnace use and high stainless alloy content.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If considered hollow bar stock
Thicker wall 'drill pipe' style may classify as hollow bars under 7229 if not pipe function.
If hot-finished rather than cold-worked
Finish condition determines statistical suffix within the same heading.
If complete furnace heat transfer equipment
Assembled furnace units classify as heat exchange machinery.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Pitting Resistance Equivalent Number (PREN >35) documentation proves duplex stainless suitability
• Furnace coil bending radius specs required to confirm refining furnace application
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