4-1/2 inch 12.6 lb/ft L80-13Cr Tie-Back Casing
Slim 4-1/2 inch seamless stainless steel L80-13Cr casing for tie-back extensions in subsea completions. HTS 7304.24.40 applies to this other stainless steel casing used in oil/gas drilling. Essential for connecting subsea wells to surface platforms.
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Same material/dimensions but different end use shifts classification.
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End-use in turbomachinery classifies as gas turbine parts.
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Import Tips & Compliance
• Include completion design specs showing tie-back application to distinguish from standard production tubing
• 13Cr material requires sour service certs (NACE MR0175); missing docs lead to rejection
• Small diameter casing often shipped in containers - declare packing method accurately
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