API 5CT L80 Alloy Steel Oil Well Casing
Seamless L80 grade alloy steel casing pipe used in oil and gas drilling operations, with an outside diameter of 339.7 mm and wall thickness of 10.5 mm. Classified under HTS 7304.29.4150 due to its seamless construction from alloy steel, specific OD range exceeding 285.8 mm but not over 406.4 mm, and wall thickness under 12.7 mm for oilfield casing applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If wall thickness 12.7 mm or greater
Thicker wall casings fall under different statistical suffixes within the same casing heading for structural strength requirements.
If used for structural or line pipe applications rather than drilling
Pipes not specifically for oil/gas drilling are classified under other seamless steel pipe headings based on end use.
If made from stainless steel alloy
Stainless steel variants shift to the stainless steel subheading within Chapter 73.
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Import Tips & Compliance
• Verify API 5CT certification and provide mill test certificates (MTC) showing chemical composition and mechanical properties for alloy steel
• Confirm exact OD (285.8-406.4 mm) and wall thickness (<12.7 mm) measurements to avoid misclassification into thicker wall subheadings
• Include end-use declaration as oil/gas drilling casing to distinguish from structural pipes; watch for anti-dumping duties on certain alloy steel pipes
Related Products under HTS 7304.29.41.50
9-5/8 Inch P110 Alloy Casing for Gas Wells
Seamless P110 high-strength alloy steel casing with 9-5/8 inch (244.5 mm OD, but model variant at 355.6 mm OD with 11.2 mm wall) designed for high-pressure gas well applications in drilling operations. Fits HTS 7304.29.4150 as other alloy steel seamless casing in the 285.8-406.4 mm OD range with thin wall under 12.7 mm.
13-3/8 Inch 13Cr Alloy Steel Sour Service Casing
Seamless 13Cr (13% chromium) alloy steel casing optimized for sour (H2S) environments in oil drilling, 339.7 mm OD and 10.92 mm wall thickness. Meets HTS 7304.29.4150 criteria for other alloy steel seamless casing used in oil/gas drilling with OD 285.8-406.4 mm and wall <12.7 mm.
14 Inch Q125 High Collapse Alloy Casing
Seamless Q125 quasi-premium alloy steel casing with 355.6 mm OD and 11.1 mm wall, engineered for high collapse resistance in deep oil wells. Classified in HTS 7304.29.4150 for its seamless alloy steel construction as drilling casing in the specified OD and thin-wall parameters.
12-3/4 Inch T95 Alloy Steel Casing
Seamless T95 grade alloy steel oilfield casing pipe, 323.9 mm OD with 9.5 mm wall thickness, suitable for intermediate casing strings in directional drilling. Falls under HTS 7304.29.4150 as other alloy seamless casing for oil/gas with OD 285.8-406.4 mm and wall under 12.7 mm.