API 5CT N80 Stainless Steel Oil Well Tubing
Welded stainless steel tubing conforming to API 5CT N80 specifications, used in oil and gas drilling operations to line and protect the borehole. Its seamless-like welded construction and high-strength properties classify it under HTS 7306.21.80 as tubing for drilling applications. The stainless steel composition ensures corrosion resistance in harsh downhole environments.
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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 seamless rather than welded
Seamless stainless steel casing/tubing for oil/gas drilling falls under heading 7304, distinguished by absence of welds.
If not specifically for oil/gas drilling
Other welded stainless steel tubes not designated for drilling use are classified under general tubing headings.
If of iron or non-alloy steel
Composition changes from stainless to carbon steel shifts to heading 7305 for welded oilfield tubing.
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Import Tips & Compliance
• Verify API 5CT certification and material test reports (MTRs) to confirm compliance with oilfield standards and avoid reclassification
• Include end-user declarations specifying drilling use to differentiate from general piping under Chapter 73
• Watch for common pitfalls like incorrect welding method documentation, which could shift to seamless tubing codes
Related Products under HTS 7306.21.80
4-1/2 inch 13Cr Stainless Steel Tubing
Welded 13Cr (13% chromium) stainless steel tubing, 4-1/2 inch OD, for corrosive oil/gas drilling environments like CO2 fields. HTS 7306.21.80 applies to its specific welded design for well completion and production. Offers superior pitting resistance over standard carbon steel.
13-3/8 inch L80 Stainless Steel Drilling Tubing
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2-7/8 inch P110 Welded Stainless Tubing
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7 inch Duplex Stainless Oilfield Tubing
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3-1/2 inch Super Duplex Tubing
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5-1/2 inch 316L Stainless Production Tubing
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