7 Inch L80 Coupled Surface Casing
7-inch OD L80 nonalloy steel seamless casing with premium threaded couplings, used as surface casing in oil drilling to prevent collapse. Meets API standards for drilling tubing. 7304.29.10 applies to its threaded nonalloy steel construction for oil/gas.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If drill tubing rather than casing
Narrower drill tubing for conveyance classifies separately from wider casing.
If imported in sets with couplings
Threaded assemblies exceeding simple coupled pipes may be 'other' tubes.
If part of pumpjack system
Components integral to oil pumps classify as parts of pumps.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include hydrostatic test certificates to validate pressure ratings for customs verification
• Differentiate from tubing by specifying 'casing' use; mislabeling as 'tubing' risks 7304.29.20
• Comply with country-of-melt requirements; trace steel origin to origin country for duty calculation
Related Products under HTS 7304.29.10
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Seamless steel casing pipe made from J55 grade nonalloy steel, threaded on both ends for coupling in oil well drilling operations. Used to line and stabilize boreholes during oil or gas extraction. Classifies under 7304.29.10 as threaded or coupled casing of iron or nonalloy steel for drilling.
13-3/8 Inch N80 Threaded Oil Well Casing
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4-1/2 Inch Intermediate Casing Coupled
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16 Inch Production Casing Threaded
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9-5/8 Inch K55 Coupled Drill Casing
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