Sour Service Alloy Steel Drill Pipe NACE Compliant
Seamless alloy steel drill pipe certified for sour service environments (H2S gas) per NACE MR0175 standards, used in oil/gas wells with corrosive conditions. HTS 7304.23.60 covers this as alloy steel drill pipe for drilling 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 carbon steel sour service pipe
Non-alloy carbon steel versions use 7304.22; alloy requires specified elements exceeding carbon steel limits.
If imported as sour service casing
Same material as casing (no tool joints) classifies under 7304.39 for other steel oilfield tubulars.
If with integrated proprietary valves
Drill pipe with specialized downhole valves becomes appliance taps under Chapter 84.
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Import Tips & Compliance
• Include NACE MR0175 material certification and hardness test results mandatory for sour service classification
• Specify minimum alloy elements (Ni, Cr, Mo) in documentation to qualify as 'alloy steel' vs carbon steel
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