7 Inch N80 Casing for Gas Wells
Seamless N80 grade nonalloy steel casing, 7-inch OD for gas well liners. Withstands corrosive gas environments. Under 7304.29.20 as other iron/nonalloy casing for drilling.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded construction
Welded casing moves to 7306.30 for other welded tubes/pipes.
If alloy steel version
N80 in alloy form exceeds nonalloy thresholds, going to 7304.59.
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Import Tips & Compliance
• Specify 'gas well casing' in commercial invoice to differentiate from oil-only uses
• Provide chemical composition analysis to confirm nonalloy status
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