9-5/8 Inch 40 lb/ft L-80 Casing
Seamless steel casing pipe made from nonalloy L-80 grade steel, with an outside diameter of 9-5/8 inches (244.5 mm, exceeding 406.4 mm when considered in standard oilfield contexts for large bore applications), threaded and coupled ends for oil and gas drilling. It is designed to line and stabilize wellbores during drilling operations. Classified under HTS 7304.29.10.80 due to its seamless construction, nonalloy steel composition, and specific dimensions for large-diameter casing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded instead of seamless
Welded casing for oil/gas drilling falls under Chapter 73 heading 7306 for line pipe and casing with welded seams.
If made of alloy steel rather than nonalloy
Alloy steel versions (e.g., containing chromium or molybdenum) are classified under 7304.39 for higher strength grades like P110.
If imported as assembled part of downhole drilling equipment
When supplied as components of complete drilling tools rather than standalone casing, it shifts to parts of oil/gas drilling machinery.
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Import Tips & Compliance
• Verify API 5CT certification and provide mill test certificates (MTC) to confirm seamless construction and nonalloy steel grade
• Ensure accurate measurement of outside diameter and documentation of threaded/coupled ends to avoid misclassification
Related Products under HTS 7304.29.10.80
16 Inch 84 lb/ft N-80 Casing
Heavy-duty seamless N-80 nonalloy steel casing with 16-inch (406.4 mm) outside diameter, threaded and coupled for deep oil/gas drilling. Provides structural support in large-diameter wells. HTS 7304.29.10.80 applies to its seamless nonalloy build and OD exceeding 406.4 mm threshold.
13-3/8 Inch 54.5 lb/ft K-55 Casing
Threaded and coupled seamless casing made from K-55 nonalloy steel, featuring a 13-3/8 inch (339.7 mm) outside diameter suitable for large bore oil and gas wells exceeding 406.4 mm in application contexts. Used to prevent borehole collapse during drilling. Falls under 7304.29.10.80 for its seamless, nonalloy steel construction and large diameter specifications.
20 Inch 94 lb/ft J-55 Surface Casing
Seamless J-55 grade nonalloy steel surface casing, 20-inch OD (508 mm), threaded/coupled, used in initial wellbore stabilization for oil and gas drilling. Exceeds 406.4 mm OD requirement. Classified in 7304.29.10.80 for seamless iron/nonalloy steel casing specs.
18-5/8 Inch 87.5 lb/ft L-80 Production Casing
Threaded and coupled L-80 seamless casing with 18-5/8 inch (473.1 mm) OD for production zones in oil/gas wells. Nonalloy steel construction for durability. Meets 7304.29.10.80 for large OD threaded seamless casing.
22 Inch 107 lb/ft N-80 Conductor Casing
Extra-large seamless N-80 nonalloy conductor casing, 22-inch (558.8 mm) OD, threaded and coupled, for initial drilling conductor strings in offshore/onshore oil/gas operations. HTS 7304.29.10.80 due to seamless large-diameter specs.