5-1/2 inch 20 lb/ft Super 13Cr-90KS Stainless Casing
High-strength Super 13Cr stainless steel casing (114.3 mm OD, 14.5 mm wall) rated to 90 KSI yield for HP/HT wells, seamless construction. HTS 7304.24.4020 applies due to stainless steel material, casing designation, small OD, and thick wall specification. Engineered for extreme sour service conditions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standard carbon steel equivalent for shallow wells
Non-stainless casing ≥12.7mm wall in larger diameter range under 7304.23.60.
If fitted with proprietary non-API threaded connections for specific liner hangers
Specialized threaded tube fittings classified under 7307, not plain casing.
If imported as short casing accessories or centralizers attached
Other steel articles not elsewhere specified if predominantly accessories by function.
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Import Tips & Compliance
• Include yield strength test certificates (90 KSI) but note mechanical properties don't affect HTS classification—material and form govern
• Label clearly as 'OCTG casing' to distinguish from line pipe; mislabeling common pitfall
• For re-import after use, ensure proper 9801/9802 drawback documentation
Related Products under HTS 7304.24.40.20
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