"9-5/8\" 43.5
Seamless L80 alloy steel production casing, 9-5/8 inch diameter weighing 43.5 lb/ft, for intermediate hole sections in directional drilling. Offers sour service resistance (H2S environments) per NACE MR0175. Classified in 7304.29.41 as other seamless alloy casing for drilling applications.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made from high-strength low-alloy steel with specific yield specs
Different alloy strength grades have dedicated subheadings within 7304.29.
If imported screwed and socketed for mechanical splicing
Screwed fittings change classification from plain casing to fitted pipes.
If when imported as gas wellhead components with valves
Assemblies with pressure-containing functions classified by gas turbine parts heading.
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Import Tips & Compliance
• Submit NACE MR0175/ISO 15156 compliance certificates for sour service claims affecting valuation
• Document seamless manufacturing process via ultrasonic testing reports to prevent welded pipe disputes
• Specify exact alloy chemistry (Cr, Mo content) to confirm 'other alloy steel' status vs carbon steel
Related Products under HTS 7304.29.41
API 5CT L80 Type 9 Casing Pipe
Seamless alloy steel casing pipe meeting API 5CT L80 Type 9 specifications, used to line oil and gas wells during drilling operations. It features enhanced collapse resistance and tensile strength suitable for corrosive environments. Classified under 7304.29.41 as other seamless alloy steel casing for oil/gas drilling, not high-strength types.
"13-3/8\" 72
Heavy wall seamless P110 alloy steel casing with 13-3/8 inch OD and 72 lb/ft weight, designed for deep high-pressure oil wells. Provides structural support and pressure containment during drilling and production. Falls under 7304.29.41 as other alloy steel casing excluding premium grades.
"7\" 32
Type T95 seamless alloy casing, 7-inch OD at 32 lb/ft, engineered for thermal recovery wells with high-temperature resistance. Used as liner in steam injection projects. HTS 7304.29.41 covers this as other alloy steel seamless casing for oil/gas drilling.
"4-1/2\" 12.6
C95 grade seamless alloy liner casing, 4-1/2 inch x 12.6 lb/ft, for production tubing in unconventional shale plays. Provides zonal isolation in multi-stage frac completions. Fits 7304.29.41 as other seamless alloy steel casing used in drilling operations.