3-1/2 Inch Alloy Steel Kelly Pipe
Seamless 3-1/2 inch alloy steel kelly pipe (square or hexagonal drive pipe) connecting rotary table to drill string in oil/gas rigs. Classified as drill pipe under HTS 7304.23.60 due to its role in transmitting rotation during drilling.
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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 imported as part of complete rotary table assemblies
Kelly with integrated rotary components classifies as drilling rig parts under 8430.
If stainless steel kelly construction
Stainless versions specifically use 7304.29.10 within stainless drill pipe hierarchy.
If imported without drive section
Plain pipe sections without kelly fittings become other steel tube fittings.
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Import Tips & Compliance
• Provide dimensions of drive section (square/hex) and spline specifications confirming kelly function
• Include photos/drawings showing upper kelly drive and lower pipe connection design
• Distinguish from drive rods (7308) by documenting use above swivel in drilling mast
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