3-1/2" Q125 Premium Alloy Drill Casing
Seamless Q125 grade alloy steel casing with 88.9 mm OD and 11.5 mm wall thickness for deep oil well drilling. HTS 7304.29.41.10 applies as other alloy steel seamless casing under 215.9 mm OD and <12.7 mm wall. Features proprietary quench-and-temper heat treatment for extreme conditions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If structural alloy steel exceeding minimum Cr/Mo content
Higher alloy structural grades have dedicated provisions in 7304.29.10.
If imported as cut-to-length tube fittings
Finished tube/pipe fittings classify under 7307 based on function rather than raw casing.
If supplied as complete drilling parts set with couplings
Sets with 5+ heading 8431 items classify there per GRI 3 rules.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide heat number traceability from MTRs linking to specific pipe dimensions and properties
• Avoid common pitfall of declaring as carbon steel; alloy elements like Cr/Ni/Mo must be documented
• For threaded/premium connections, classify based on pipe body, not accessory threads
Related Products under HTS 7304.29.41.10
API 5CT L80 Alloy Steel Oil Well Casing
Seamless L80 grade alloy steel casing pipe used in oil and gas drilling operations, with outside diameter of 4.5 inches and wall thickness of 9.5 mm. Classified under HTS 7304.29.41.10 as seamless casing of other alloy steel for drilling, OD less than 215.9 mm, and wall thickness under 12.7 mm. Meets API 5CT specifications for intermediate strength environments.
4-1/2" P110 Alloy Casing for Gas Wells
High-strength P110 grade seamless alloy steel casing with 10.2 mm wall thickness and 114.3 mm OD, designed for high-pressure gas well applications. Falls under HTS 7304.29.41.10 due to its seamless construction, alloy steel composition, and dimensions suitable for oil/gas drilling. Provides superior yield strength over 110 ksi per API standards.
2-7/8" T95 Alloy Steel Production Tubing
Seamless T95 alloy tubing (73 mm OD, 8.0 mm wall) used as production casing in oil wells post-drilling. Although termed 'tubing,' meets casing definition under HTS 7304.29.41.10 for seamless alloy steel drilling pipes with specified dimensions. Collapse-resistant design for sustained production.
5" C95 Sour Service Alloy Casing
Seamless C95 alloy steel casing (127 mm OD, 10.92 mm wall) certified for H2S sour service environments in oil drilling. HTS 7304.29.41.10 classification for other alloy seamless casing under size limits. Includes NACE MR0175 compliance for corrosion resistance.