13-3/8 Inch N80 Type 1 Oil Casing
Heavy-duty seamless N80 Type 1 casing of nonalloy steel, OD 339.7 mm, wall 13.7 mm thick, for deep oil well applications. Matches 7304.29.20.60 for its seamless nonalloy steel construction as oil/gas casing with specified OD and thick walls.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded and for drilling
Welded tubes/pipes used in drilling (not seamless) go to 7306.30 for other welded steel tubes.
If for industrial non-drilling use
Seamless pipes not specifically for oil/gas drilling classify as other under 7304.39.
If fitted with threaded ends as fittings
Pipes with attached fittings or collars shift to 7307 for tube/pipe fittings.
Not sure which classification is right?
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Import Tips & Compliance
• Label with exact API grade (e.g
• N80-1) and chemical composition to prove nonalloy status under HTS notes
• Pre-clear with CBP on thread type (e.g
• BTC) as premium connections might affect valuation
Related Products under HTS 7304.29.20.60
API 5CT J55 Oil Well Casing Pipe
Seamless casing pipe made of nonalloy steel, J55 grade, with outside diameter of 339.7 mm and wall thickness of 14.5 mm, used to line oil and gas wells. Classified under HTS 7304.29.20.60 due to its seamless construction, nonalloy steel material, casing use in drilling, OD between 285.8-406.4 mm, and thick wall exceeding 12.7 mm.
9-5/8 Inch K55 Casing for Gas Wells
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10-3/4 Inch L80 Casing Pipe
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14 Inch P110 Heavy Wall Casing
Premium P110 grade seamless nonalloy casing with 355.6 mm OD and 17 mm wall thickness for extreme deepwater oil drilling. Precisely under 7304.29.20.60: seamless iron/nonalloy steel casing for oil/gas, OD range 285.8-406.4 mm, wall ≥12.7 mm.
12-1/4 Inch API Casing for Offshore Rigs
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