9-5/8 inch Stainless Cased Tubing
Welded stainless steel tubing serving dual role as casing/tubing in 9-5/8 inch oil wells, providing zonal isolation. Though primarily tubing, classified under HTS 7306.21.80 for welded stainless drilling applications. Critical for hydraulic fracturing operations.
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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 expressly designated as casing
Functional designation (casing vs tubing) splits statistical reporting.
If seamless stainless casing
Seamless construction moves to heading 7304 regardless of stainless steel.
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Import Tips & Compliance
• Distinguish liner vs full casing in specs to guide classification
• API 5CT stamp verification mandatory for all oilfield tubulars
Related Products under HTS 7306.21.80
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.
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
Welded stainless steel tubing with 13-3/8 inch outer diameter and L80 grade, designed for intermediate casing and production tubing in oil/gas wells. Classified under HTS 7306.21.80 due to its welded construction and specific application in drilling operations. Provides enhanced collapse resistance for deepwell environments.
2-7/8 inch P110 Welded Stainless Tubing
High-pressure P110 grade welded stainless steel tubing, 2-7/8 inch diameter, used as production tubing in high-yield oil and gas wells. Falls under HTS 7306.21.80 for its welded stainless construction tailored for drilling and extraction. Ideal for sour service environments with H2S resistance.
7 inch Duplex Stainless Oilfield Tubing
Welded duplex stainless steel tubing (2205 grade), 7-inch diameter, for high-strength oil and gas production tubing strings. Classified in HTS 7306.21.80 as welded stainless tubing for drilling due to its corrosion-fatigue resistance in severe conditions. Used in extended reach drilling operations.
3-1/2 inch Super Duplex Tubing
Welded super duplex stainless (2507 grade) tubing, 3-1/2 inch, for ultra-corrosive oil/gas wells with high chloride content. HTS 7306.21.80 covers this welded stainless product designed explicitly for drilling tubing applications. Maximizes uptime in subsea completions.