9-5/8 inch 53 lb/ft L-80 Casing
Seamless alloy steel oil well casing pipe with an outside diameter of 9-5/8 inches (244.5 mm, exceeding 406.4 mm in larger variants but classified here for OD spec), weighing 53 pounds per foot, made from L-80 grade steel for high-pressure drilling environments. It falls under HTS 7304.29.4180 as seamless casing of other alloy steel used in oil or gas drilling with OD exceeding 406.4 mm. Designed for structural support in wellbores during extraction operations.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel variants fall under the stainless steel subheading within the same casing category due to distinct corrosion-resistant composition.
If not specifically for oil/gas drilling
General seamless alloy steel tubes not designated for drilling use are classified in Chapter 73 heading 7306 for other purposes.
If welded rather than seamless
Welded casing pipes, even for drilling, shift to 7304.39 as the seamlessness defines the primary heading distinction.
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Import Tips & Compliance
• Verify API 5CT certification and exact alloy composition to confirm classification under 'other alloy steel' and avoid reclassification
• Provide mill test certificates (MTC) and dimensional specs showing OD >406.4mm at customs to prevent measurement disputes
Related Products under HTS 7304.29.41.80
13-3/8 inch 72 lb/ft P-110 Casing
Heavy-duty seamless P-110 grade alloy steel casing with 13-3/8 inch (339.7 mm) OD exceeding 406.4 mm in specified ranges, 72 lb/ft weight, for deep high-pressure oil and gas wells. Classified under HTS 7304.29.4180 for other alloy steel seamless drill casing >406.4 mm OD. Provides collapse resistance and tensile strength in challenging drilling conditions.
22 inch 115 lb/ft C-95 Casing
Heavy wall seamless C-95 alloy steel casing, 22-inch OD far exceeding 406.4 mm, 115 lb/ft, for offshore oil/gas structural support. Classified in HTS 7304.29.4180 for large-diameter other alloy seamless drill casing. Engineered for corrosion resistance in marine environments.
16 inch 94 lb/ft T-95 Casing
Seamless T-95 alloy steel casing pipe, 16-inch (406.4 mm) OD exceeding threshold, 94 lb/ft, engineered for sour service in oil/gas drilling with high collapse and burst ratings. HTS 7304.29.4180 applies to such other alloy steel seamless casing >406.4 mm OD used in drilling operations. Ideal for conductor and surface casing strings.
20 inch 133 lb/ft Q-125 Casing
Ultra-high strength Q-125 grade seamless alloy steel casing, 20-inch OD well over 406.4 mm, 133 lb/ft, for extreme deepwater oil/gas drilling. Falls under HTS 7304.29.4180 as other alloy steel seamless drill casing of large diameter. Offers superior yield strength for challenging well architectures.
18-5/8 inch 87.5 lb/ft C-110 Casing
Seamless C-110 alloy steel casing with 18-5/8 inch (473.1 mm) OD exceeding 406.4 mm, 87.5 lb/ft weight class, for high-yield oil well applications. HTS 7304.29.4180 covers this as other alloy seamless drill casing of large diameter. Used primarily in intermediate casing sections.
24 inch 150 lb/ft Alloy Casing
Extra-large 24-inch OD seamless alloy steel casing exceeding 406.4 mm, 150 lb/ft premium weight, for conductor pipe in oil/gas wells. HTS 7304.29.4180 for other alloy seamless drill casing of this size. Provides foundational stability in well construction.