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: > Other: > 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 7306.29.41.00
API 5CT J55 Steel Oil Well Casing
This is a seamless steel casing pipe conforming to API 5CT J55 grade specifications, designed for use in oil and gas drilling to line the borehole and prevent collapse. It falls under HTS 7306.29.41.00 as 'other' casing of iron or steel used in drilling for oil or gas, excluding those with attached fittings. The pipe's wall thickness and diameter meet standard oilfield requirements for intermediate casing strings.
9-5/8 Inch N80 Type 9Cr Oil Casing Pipe
A 9-5/8 inch outer diameter N80 grade casing pipe made of 9Cr alloy steel, welded and used to stabilize wellbores in corrosive oil drilling environments. Classified under HTS 7306.29.41.00 as other steel casing for oil or gas drilling, not having fittings. Its chromium content enhances corrosion resistance for intermediate casing applications.
13-3/8 Inch K55 Surface Casing for Gas Wells
Heavy-duty 13-3/8 inch K55 grade welded steel surface casing pipe used in gas well drilling to protect freshwater aquifers and provide structural support. It qualifies for HTS 7306.29.41.00 as other iron or steel casing specifically for oil or gas drilling operations, excluding those with connectors. Standard API dimensions ensure compatibility with rotary drilling rigs.
7 Inch L80 13Cr Corrosion-Resistant Casing
7-inch L80 grade casing featuring 13% chromium content for sour gas environments in oil drilling, welded construction without fittings. Falls under HTS 7306.29.41.00 for other steel casing used in oil or gas drilling. Provides high collapse resistance for production casing strings.
20 Inch Conductor Casing Pipe P110 Grade
Extra-large 20-inch P110 high-strength steel conductor casing for initial borehole support in offshore oil drilling, welded profile without fittings. Classified in HTS 7306.29.41.00 as other casing of iron or steel for oil/gas drilling. High yield strength handles extreme loads during spudding.
4-1/2 Inch Production Casing T95 Grade
Narrow 4-1/2 inch T95 grade welded steel production casing for isolating producing zones in oil wells, no fittings attached. HTS 7306.29.41.00 applies to this other casing designed specifically for oil or gas drilling. Enhanced tensile properties suit deep production sections.
16 Inch Intermediate Casing C110 Alloy
16-inch C110 grade high-collapse alloy steel intermediate casing welded for multi-stage oil well construction, plain ends. Under HTS 7306.29.41.00 as other iron/steel casing for drilling. Alloy composition resists H2S environments.
10-3/4 Inch H40 Low-Cost Casing
Economical 10-3/4 inch H40 grade welded steel casing for shallow oil drilling applications, no couplings. HTS 7306.29.41.00 covers this other casing type for oil/gas wells. Basic carbon steel construction for conductor/intermediate use.
30 Inch Low-Pressure Conductor Pipe
Massive 30-inch low-pressure rated welded steel conductor pipe for initial seabed penetration in offshore gas platforms, plain. Classified HTS 7306.29.41.00 as other steel casing for oil/gas drilling. Thick walls support drive pipe installation.
5-1/2 Inch Tie-Back Casing Q125
High-strength 5-1/2 inch Q125 grade welded tie-back casing for extending surface casing in extended reach oil wells, no fittings. HTS 7306.29.41.00 for other iron/steel oil/gas casing. Proprietary quenched/tempered steel for ultra-high pressure.
18-5/8 Inch Protective Casing String
18-5/8 inch welded steel protective casing for intermediate borehole protection in horizontal gas drilling, plain ends. Under HTS 7306.29.41.00 as other casing used in oil/gas drilling. Standard J55 chemistry for cost-effective zonal isolation.
8-5/8 Inch Sour Service Casing
8-5/8 inch L80-9Cr sour service welded casing for H2S-prone oil reservoirs, without couplings. HTS 7306.29.41.00 covers other steel casing for drilling. Meets NACE standards for sulfide stress cracking resistance.
23-3/8 Inch Drive Pipe Casing
23-3/8 inch heavy wall drive pipe casing hammered into seabed for offshore oil wells, welded plain. Classified HTS 7306.29.41.00 other casing for gas/oil drilling. X52 grade for structural drive applications.
6-5/8 Inch High-Pressure Liner Casing
6-5/8 inch P110 high-pressure liner casing welded for tailpipe sections in oil completions, no fittings. HTS 7306.29.41.00 for other iron/steel drilling casing. Slotted options available for gravel pack.
12-1/4 Inch Intermediate Support Casing
12-1/4 inch K55 intermediate support casing welded for deviated oil well trajectories, plain ends. Under HTS 7306.29.41.00 as other casing in oil/gas drilling. Balanced collapse/tensile for directional drilling.