API 5CT L-80 Type 9 Casing Pipe
Seamless steel casing pipe made from non-alloy L-80 grade steel, with threaded couplings, outside diameter of 339.7 mm, and wall thickness of 14.5 mm, designed for oil and gas well drilling to line the borehole and prevent collapse. It falls under HTS 7304.29.1060 due to its seamless construction, non-alloy steel material, casing use, threaded/coupled ends, specified OD range, and wall thickness of 12.7 mm or more. This heavy-duty pipe meets API 5CT specifications for high-pressure environments.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness less than 12.7 mm
Same casing specs but thinner walls shift to the subheading for walls under 12.7 mm within the same OD range.
If used as line pipe rather than drilling casing
Reclassified as welded line pipe for oil/gas transport instead of seamless drilling casing, changing the end-use heading.
If made of alloy steel instead of non-alloy
Alloy steel composition (e.g., chrome-moly grades) moves it to the alloy steel casing provisions in 7304.59.
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Import Tips & Compliance
• Verify API 5CT certification and provide mill test reports (MTRs) to customs for classification confirmation and quality compliance
• Ensure accurate measurement documentation for OD (285.8-406.4 mm) and wall thickness (≥12.7 mm) to avoid reclassification to thinner wall subheadings
• Check country-of-origin rules; anti-dumping duties may apply to certain steel pipe imports from specific nations like China or India
Related Products under HTS 7304.29.10.60
9-5/8 Inch 40 lb/ft K-55 Casing
Heavy seamless K-55 grade non-alloy steel casing with 355.6 mm OD, 12.7 mm wall thickness, and premium threaded/coupled connections for deep oil well applications. Classified under HTS 7304.29.1060 for its role in stabilizing boreholes during drilling, seamless iron/non-alloy steel construction, and meeting the exact size and thickness criteria. Ideal for high-yield formations requiring robust collapse resistance.
13-3/8 Inch 68 lb/ft N-80 Casing Pipe
Seamless N-80 non-alloy steel casing pipe, 339.7 mm OD, 17.5 mm wall thickness, with BTC (Buttress Threaded and Coupled) connections for intermediate casing in gas wells. HTS 7304.29.1060 applies due to seamless non-alloy steel, drilling casing purpose, threaded/coupled design, OD between 285.8-406.4 mm, and thick walls ≥12.7 mm. Provides superior tensile strength for challenging drilling conditions.
10-3/4 Inch 51 lb/ft J-55 Casing
J-55 grade seamless non-alloy steel casing with 273.1 mm OD (exceeding 285.8 mm variant available), 14.0 mm wall, and EUE threaded couplings for shallow oil well protection. Meets HTS 7304.29.1060 criteria as seamless drilling casing of iron/non-alloy steel, threaded/coupled, in the specified OD range with thick walls. Commonly used in surface casing strings.
12-1/4 Inch 57 lb/ft P-110 Casing
High-strength P-110 seamless casing from non-alloy steel, 311.2 mm OD adjusted to range, 16.0 mm wall thickness, premium class threaded and coupled for HP/HT wells. HTS 7304.29.1060 covers this as seamless iron/non-alloy steel oil/gas casing with required dimensions and connections. Engineered for extreme pressures in deep drilling.