API 5CT L80 Type 9 Casing Pipe 9-5/8 inch
Seamless alloy steel casing pipe conforming to API 5CT L80 Type 9 specifications, with an outside diameter of 244.5 mm (9-5/8 inches) and wall thickness of 15.7 mm, designed for oil and gas well drilling. It falls under HTS 7304.29.4140 due to its seamless construction from alloy steel, OD between 215.9-285.8 mm, and wall thickness of 12.7 mm or more for use as drilling casing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel casing falls under the stainless steel subheading 7304.29.10 regardless of wall thickness.
If OD exceeds 285.8 mm
Larger diameter casing (over 11-1/4 inches) shifts to the next OD size band in 7304.29.31.
If imported as welded rather than seamless
Welded casing for oil/gas drilling is classified under Chapter 73 heading 7306 for welded pipes.
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Import Tips & Compliance
• Obtain API 5CT Monogram License and mill test certificates (MTC) verifying chemical composition and mechanical properties
• Confirm exact OD (215.9-285.8 mm) and wall thickness (>=12.7 mm) measurements to avoid reclassification to thinner wall subheadings
• Include ITP (Inspection Test Plan) documentation; common pitfall is missing heat treatment records for alloy steel grades
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