API 5CT L80 Type 9 Casing Pipe
Seamless alloy steel casing pipe meeting API 5CT L80 Type 9 specifications, used to line oil and gas wells during drilling operations. It features enhanced collapse resistance and tensile strength suitable for corrosive environments. Classified under 7304.29.41 as other seamless alloy steel casing for oil/gas drilling, not high-strength types.
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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 supplied with API couplings or threaded ends as complete assemblies
Threaded or coupled line pipe falls under 7306.19, distinguished from plain-end casing by connection method.
If made of stainless steel alloy
Stainless steel seamless pipes shift to 7304.39 regardless of end use due to material composition.
If imported as part of completed drilling rigs or equipment
Parts of oil/gas drilling machinery are classified under 8431 based on principal function rather than as standalone pipes.
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Import Tips & Compliance
• Verify API 5CT certification and material test reports (MTRs) for alloy composition to confirm 7304.29.41 classification
• Include mill test certificates showing seamless production and exact steel alloy grades to avoid reclassification as welded pipe
• Ensure proper marking of outer diameter, weight, and grade per API standards to prevent customs valuation disputes
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"9-5/8\" 43.5
Seamless L80 alloy steel production casing, 9-5/8 inch diameter weighing 43.5 lb/ft, for intermediate hole sections in directional drilling. Offers sour service resistance (H2S environments) per NACE MR0175. Classified in 7304.29.41 as other seamless alloy casing for drilling applications.
"7\" 32
Type T95 seamless alloy casing, 7-inch OD at 32 lb/ft, engineered for thermal recovery wells with high-temperature resistance. Used as liner in steam injection projects. HTS 7304.29.41 covers this as other alloy steel seamless casing for oil/gas drilling.
"4-1/2\" 12.6
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