API 5CT L80 Type 9Cr Seamless Oilfield Tubing
Seamless tubing made from 9% chromium alloy steel, conforming to API 5CT L80 specifications for oil and gas drilling applications. It features an outside diameter not exceeding 114.3 mm and wall thickness ≤9.5 mm, designed for casing and production in corrosive environments. Classified under 7304.29.61.15 as seamless alloy steel tubing used in oil/gas drilling.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of stainless steel
Stainless steel variants fall under the stainless subheading within the same tubing category.
If not specifically for oil/gas drilling
Other seamless steel tubes not designated for drilling use are classified in Chapter 73 headings for general tubes.
If welded rather than seamless
Welded construction shifts classification from seamless (7304) to other tubes/pipes (7306 or 7304.39).
Not sure which classification is right?
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Import Tips & Compliance
• Obtain API 5CT Monogram License and mill test certificates (MTC) to prove seamless construction and alloy composition
• Ensure outside diameter ≤114.3 mm and wall thickness ≤9.5 mm measurements are documented to avoid reclassification
Related Products under HTS 7304.29.61.15
API 5CT P110 13Cr Seamless Casing Tubing
High-strength seamless tubing of 13% chromium alloy steel per API 5CT P110 grade, used as production tubing in oil/gas wells. With OD ≤114.3 mm and wall thickness not over 9.5 mm, it withstands high-pressure sour service conditions. Fits HTS 7304.29.61.15 for other alloy steel drilling tubing.
API 5CT T95 10# 2-3/8" Alloy Tubing
T95 grade seamless alloy steel tubing, 2-3/8" OD at 10 lb/ft for extreme service oil/gas wells. Wall thickness 7.01 mm supports high collapse resistance in drilling. Meets HTS 7304.29.61.15 for small-diameter, thin-wall alloy drilling tubing.
"3-1/2\" 9.30
Q125 grade ultra-high strength seamless tubing, 3-1/2" OD 9.30 lb/ft for H2S sour service environments. Wall 8.26 mm thickness for deep, high-pressure gas wells. Falls under 7304.29.61.15 as alloy steel drilling tubing within size limits.
"2-7/8\" 7.90
Martensitic stainless alloy seamless tubing 2-7/8" OD, 7.90 lb/ft for CO2 corrosion resistance in production tubing. Wall thickness 7.44 mm suits horizontal completions. Although stainless, classified as 'other alloy' drilling tubing under 7304.29.61.15.
"4-1/2\" 10.50
4-1/2 inch OD 10.50 lb/ft 9Cr-110 seamless alloy tubing for high-strength casing/tubing strings. 9.19 mm wall thickness maximizes ID in slimhole applications. HTS 7304.29.61.15 designation for alloy drilling tubing ≤114.3 mm OD.
API 5CT C110 8# 2-3/8" Tubing
C110 restricted yield alloy steel seamless tubing, 2-3/8" 8.00 lb/ft for sour service drilling. Wall 5.61 mm provides balanced strength-to-weight. Classified 7304.29.61.15 as other alloy steel oil/gas tubing.