Other
Other tubes, pipes and hollow profiles (for example, open seamed or welded, riveted or similarly closed), of iron or steel: > Casing and tubing of a kind used in drilling for oil or gas: > Other: > Casing: > Of iron or nonalloy steel: > Threaded or coupled > Other
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 7306.29.10.90
API 5CT J55 Threaded Steel Oil Well Casing
Threaded and coupled steel casing pipe made from J55 grade non-alloy steel, used to line oil and gas wells during drilling operations. It meets API 5CT specifications for strength and pressure resistance in drilling applications. Classified under 7306.29.10.90 as other threaded or coupled casing of iron or nonalloy steel for oil/gas drilling.
13-3/8 Inch N80 Type 1 Threaded Casing
Heavy-duty 13-3/8 inch N80 Type 1 non-alloy steel casing with premium threaded couplings for surface and conductor applications in gas wells. Welded construction per API standards for high-pressure environments. HTS 7306.29.10.90 covers this as other threaded casing for drilling.
10-3/4 Inch P110 Threaded and Coupled Casing
High-strength P110 grade 10-3/4 inch casing with VAM threaded couplings for deep, high-pressure oil and gas wells. Non-alloy steel welded pipe per API 5CT for liner applications. HTS 7306.29.10.90 applies to other threaded/coupled nonalloy casing.
4-1/2 Inch Production Tubing Casing Alternative
4-1/2 inch J55 threaded casing used as liner in slimhole oil wells, coupled with EUE threads. Non-alloy steel welded pipe serving dual casing/tubing role in drilling. HTS 7306.29.10.90 for threaded oil/gas casing of iron/nonalloy steel.
16 Inch Intermediate Casing Threaded Steel
16-inch N80 intermediate casing with LTC (Long Threaded and Coupled) connections for oil well protection against collapse. Welded non-alloy steel API 5CT pipe. Classified under 7306.29.10.90 as other threaded casing for drilling.
8-5/8 Inch Surface Casing Pipe Coupled
8-5/8 inch K55 surface casing threaded and coupled for shallow oil well sections, providing initial borehole stability. Non-alloy steel welded with STC connections per API. 7306.29.10.90 covers other threaded/nonalloy drilling casing.
18-5/8 Inch X56 Conductor Threaded Casing
18-5/8 inch X56 grade large-diameter conductor casing with integral threaded joints for offshore rig foundations. Welded non-alloy steel for heavy load-bearing in drilling. HTS 7306.29.10.90 for threaded oil/gas casing.
5-1/2 Inch L80-9CR Threaded Casing
5-1/2 inch L80-9CR restricted alloy casing threaded for sour gas service wells. While containing chromium, classified as nonalloy base with restrictions under 7306.29.10.90 when meeting criteria. Welded for drilling applications.
12-1/4 Inch Intermediate J55 Casing Coupled
12-1/4 inch J55 intermediate casing with field-grade couplings for conventional oil wells. Non-alloy welded steel pipe threaded for zonal isolation. 7306.29.10.90 classification for other threaded drilling casing.
14 Inch Production Casing N80 Threaded
14-inch N80 production casing threaded with premium connections for hydrocarbon flow zones. Welded non-alloy steel API pipe preventing formation collapse. HTS 7306.29.10.90 for threaded oil/gas casing.
6-5/8 Inch Liner Casing Threaded Hanger
6-5/8 inch liner casing with liner hanger threads for tie-back systems in oil wells. Non-alloy steel welded, coupled for hanging production liners. Classified 7306.29.10.90 as threaded drilling casing.
24 Inch Low Pressure Conductor Casing
24-inch low-pressure conductor casing threaded for shallow water offshore drilling. Extra-large diameter non-alloy steel welded pipe with couplings. 7306.29.10.90 covers oversized threaded oil/gas casing.
9-5/8 Inch K55 Coupled Casing Pipe
9-5/8 inch outer diameter K55 grade threaded and coupled casing pipe of non-alloy steel, designed for intermediate casing strings in oil well drilling. Features BTC (Buttress Threaded and Coupled) connections for reliable sealing. Falls under 7306.29.10.90 as other casing for oil/gas drilling, welded construction.
7 Inch L80 Coupled Oilfield Casing
7-inch L80 grade non-alloy steel casing pipe, threaded and coupled with STC (Short Threaded and Coupled) connections for production zones in oil wells. Provides corrosion resistance and structural support. Classified in 7306.29.10.90 for welded, threaded oil/gas casing.
20 Inch Conductor Casing Pipe Threaded
Large 20-inch diameter X52 grade threaded and coupled conductor casing for initial wellbore stabilization in offshore oil platforms. Welded non-alloy steel designed for structural support. Covered by 7306.29.10.90 as other oil/gas drilling casing.