8-5/8 inch 32# N80 Casing for Drilling
N80 grade seamless casing pipe, 8-5/8 inch (219.1 mm) OD just above minimum range, 32 lb/ft, 11.2 mm wall thickness. Employed in surface and intermediate casing for oil exploration wells. Qualifies under 7304.29.20.30 as iron/nonalloy steel seamless casing of specified dimensions.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for alloy steel versions
N80-1 or quenched/tempered variants containing alloying elements > specified limits classify as alloy.
If imported as complete drill string assemblies
Assembled with tool joints, becomes parts of oil/gas drilling machines.
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
• Measure OD precisely as 219.1 mm meets minimum 215.9 mm threshold; provide gauge reports
• Include collapse and burst test data from MTC to validate oilfield application
• Separate pup joints (<3m) may classify under 7304.90 as unfinished tubes
Related Products under HTS 7304.29.20.30
API 9-5/8 inch 40# P110 Casing Pipe
Seamless steel casing pipe with 9-5/8 inch (244.5 mm) outside diameter, 40 lb/ft weight, and P110 grade, wall thickness of 11.0 mm. Used to line oil and gas wells during drilling operations to stabilize the borehole. Falls under HTS 7304.29.20.30 due to its seamless construction, nonalloy steel composition, and specified diameter range (215.9-285.8 mm) with wall thickness under 12.7 mm.
9-5/8 inch 36# K55 Oil Well Casing
Seamless K55 grade casing with 9-5/8 inch OD (244.5 mm), 36 lb/ft, wall thickness 10.54 mm, designed for intermediate casing strings in oil drilling. Provides structural support and pressure containment in well construction. Classified under 7304.29.20.30 for its size, seamless nature, and thin wall specification.
10-3/4 inch 40.5# J55 Gas Well Casing
Seamless J55 grade steel casing, 10-3/4 inch (273 mm) OD, 40.5 lb/ft weight, 11.5 mm wall thickness for natural gas well applications. Used as production casing to isolate formations and control pressure. Meets HTS 7304.29.20.30 criteria for nonalloy seamless casing in the 215.9-285.8 mm OD range.
11-3/4 inch 42# L80 Type 9 Cr13 Casing
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