10-1/2 inch 79# C-110 Duplex Stainless Casing
C-110 grade duplex stainless seamless casing pipe, 10-1/2 inch OD (266.7 mm), 79 lb/ft, 19.1 mm wall thickness, VAM 21RPX premium threads for deepwater applications. Perfect match for 7304.24.30.40: stainless steel, seamless, oil/gas casing, 215.9-285.8 mm OD class, heavy wall ≥12.7 mm.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as cut-to-length threaded tube fittings
Short lengths with specific fittings classified as tube/pipe fittings in 7307.
If OD 168.3-215.9 mm instead
Different OD size band within stainless casing uses 7304.24.20 subheading.
Not sure which classification is right?
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Import Tips & Compliance
• Confirm PREN value >40 for duplex stainless verification; check for hydrogen embrittlement testing; avoid mixing with carbon steel accessories during customs exam
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