3-1/2 inch Alloy Steel Tubing for Gas Drilling
Seamless 3-1/2 inch OD alloy steel tubing with 8.0 mm wall thickness for gas well drilling operations. Grade 80 material suitable for sour service environments. HTS 7304.23.6030 applies to this seamless alloy drill tubing dimension range.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sold as tube fittings or couplings rather than plain pipe
Pipe fittings and flanges have separate classification in 7307
If imported as replacement pump shafts for drilling pumps
End-use as pump parts shifts classification to Chapter 84 machinery parts
Not sure which classification is right?
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Import Tips & Compliance
• Include NACE hardness certification for sour service applications
• Specify H2S content threshold in end-use declaration to justify classification
• Ensure dimensional inspection reports match declared OD/wall specs exactly
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