5-1/2 Inch 20 lb/ft 22Cr Duplex Casing
Duplex 22Cr (2205) stainless steel casing for subsea production, 5-1/2 inch with VAM LeTourneau couplings. Superior pitting and crevice corrosion resistance. HTS 7304.24.30 classification for stainless oilfield casing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as threaded tube fittings
Threaded stainless fittings/bends classify under 7307.23 regardless of end use.
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Import Tips & Compliance
• Certify PREN value >35 for duplex stainless classification
• Document ferrite content (35-65%) per ASTM A923
• Include low-temperature impact test results for arctic service
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