9-7/8 inch 43.50# L80 Casing API 5CT
API 5CT L80-13Cr seamless casing 9-7/8 inch (250.82 mm OD), 43.50 lb/ft with 17.45 mm wall thickness for intermediate/production casing in corrosive oilfield conditions. Fits HTS 7304.29.4140 specifications for alloy steel seamless thick wall casing.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded electric resistance
ERW casing construction moves to welded headings 7306.30.
If tubing application
Same dimensions designated as tubing (run to producing zone) uses tubing subheading.
If non-drilling end use
If not 'of a kind used in drilling,' becomes general seamless steel tube under 7304.19.
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Import Tips & Compliance
• Dual certify L80-1 (carbon) vs L80-9Cr/13Cr; alloy content determines 7304.29 vs 7304.39 classification
• Nominal weights must match wall tables; 43.50# confirms thick wall status over 12.7 mm
• Preferred lengths 40 ft (Range 2) or 50 ft (Range 3); declare to match physical shipment
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