5" C95 Sour Service Alloy Casing
Seamless C95 alloy steel casing (127 mm OD, 10.92 mm wall) certified for H2S sour service environments in oil drilling. HTS 7304.29.41.10 classification for other alloy seamless casing under size limits. Includes NACE MR0175 compliance for corrosion resistance.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If designated as line pipe for sour service
Pipeline transport function shifts classification to welded/unwelded line pipe headings.
If non-alloy carbon steel composition
Lack of minimum alloy content (Ni+Cr+Mo <0.3%) results in 7304.19 classification.
If integrated into downhole testing equipment
Functional integration into Chapter 84 oilfield machinery changes principal classification.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include NACE material certificates verifying sour service compliance for customs verification
• Document restricted alloy elements (P/S/Cr) that distinguish from carbon steel grades
• For multiple grades in one container, segregate documentation by HTS statistical suffix
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