Duplex 2205 Stainless Seamless Pressure Tubing
High-strength duplex stainless steel 2205 seamless tubing for high-pressure gas and fluid transfer systems. Under HTS 7304.59.80 as other alloy steel seamless circular tubes. Dual-phase microstructure provides superior stress corrosion cracking resistance.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cold-worked/traffic use
Cold-finished seamless tubes for mechanical/structural applications separate.
If welded duplex stainless construction
Welded pressure pipes of alloy steel in 7306.30.
If threaded/fitted for screw-in pressure connections
Tube/pipe fittings threaded at both ends classify differently.
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Import Tips & Compliance
• Material certs must specify duplex microstructure and PREN values for alloy verification
• Ensure not declared as mechanical tubing which has different cold-drawn provisions
• For pressure vessel use, cross-check ASME Section II materials specs
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