Threaded or coupled
Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel: > Casing of a kind used in drilling for oil or gas: > Of alloy steel: > Threaded or coupled
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Products classified under HTS 7305.20.60.00
22" High-Strength Threaded Oil Casing
22-inch OD high-strength alloy threaded and coupled casing for deep oil drilling. Classified HTS 7305.20.60.00: iron/steel welded tube >406.4 mm circular, alloy, threaded for casing in oil/gas ops. Yield strength optimized for tensile loads.
Threaded Alloy Steel Oil Well Casing Pipe
Large-diameter (over 16 inches) threaded alloy steel casing pipe designed for oil well drilling, featuring API-standard couplings for secure connections in borehole lining. Classified under HTS 7305.20.60.00 due to its circular cross-section exceeding 406.4 mm, alloy steel composition, and threaded/coupled ends specific for oil/gas drilling applications. The welded construction and size distinguish it from smaller pipes or non-casing tubes.
API 5CT L-80 Threaded Casing
L-80 grade alloy steel threaded casing with coupled joints, external diameter over 406.4 mm, used to stabilize wellbores during oil extraction. Fits HTS 7305.20.60.00 as welded, large-diameter alloy steel pipe explicitly for drilling casing with threading for assembly. Its high-strength alloy meets demanding downhole conditions.
9-5/8" P110 Coupled Oil Casing
P110 premium grade alloy steel casing, 9-5/8 inch OD (exceeding 406.4 mm when specified larger), with BTC threaded couplings for high-pressure oil wells. Under HTS 7305.20.60.00 for its role as welded, threaded alloy steel drilling casing with circular cross-section over 16 inches. Designed for extreme environments in oil production.
13-3/8" Alloy Steel Surface Casing
Threaded and coupled 13-3/8 inch alloy steel surface casing for initial wellbore support in oil drilling operations. Matches HTS 7305.20.60.00 criteria: welded iron/steel tube, circular >406.4 mm OD, alloy, threaded for oil/gas casing use. Prevents collapse during early drilling phases.
20" Threaded Alloy Gas Well Casing
Heavy-duty 20-inch OD threaded alloy steel casing with couplings, used in natural gas well drilling to line deep boreholes. HTS 7305.20.60.00 applies for its oversized circular welded construction, alloy material, and threaded design tailored for gas extraction drilling. Corrosion-resistant for sour gas environments.
16" Q125 Premium Threaded Casing
Q125 high-collapse strength alloy casing, 16-inch OD threaded and coupled per API specs for challenging oil drilling. Classified in HTS 7305.20.60.00 as large-diameter (>406.4 mm), welded alloy steel threaded pipe for oil/gas casing. Ideal for high-pressure, deviated wells.
18-5/8" Alloy Intermediate Casing
Threaded coupled intermediate casing of alloy steel, 18-5/8" OD for mid-depth oil well protection. HTS 7305.20.60.00 due to welded circular cross-section >16", alloy steel, and drilling-specific threading/coupling. Supports cementing operations.
Threaded Alloy Steel Conductor Pipe
Large 30-36" OD alloy steel conductor casing, threaded and coupled, for initial shallow drilling in offshore oil platforms. Fits HTS 7305.20.60.00 as oversized welded threaded alloy pipe for oil/gas drilling. Drives through seabed to support riser systems.
API 5CT T95 Coupled Casing
T95 grade alloy steel threaded casing with integral couplings, OD exceeding 16", for sour service oil wells. HTS 7305.20.60.00 for welded, large circular alloy steel threaded/coupled drilling casing. Enhanced sulfide stress cracking resistance.