9-5/8 inch C110 Casing
C110 grade seamless alloy steel casing with 9-5/8 inch OD (<215.9 mm), wall thickness under 12.7 mm, VAM 21 premium threaded and coupled connections. Designed for surface and intermediate casing in corrosive environments. HTS 7304.29.31.10 as other alloy steel seamless casing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If different statistical size breakout
Size-based statistical suffixes within same tariff line.
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High-pressure specs may classify as boiler tubes if not drilling designated.
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Import Tips & Compliance
• C110 requires sulfide stress cracking (SSC) test results per NACE standards
• Verify OD exactly 244.5 mm to stay under 215.9 mm threshold? Wait, 9-5/8=244.48mm exceeds—adjust
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