API 5CT N80-1 Oilfield Tubing
Seamless steel tubing made from non-alloy N80-1 grade steel, used as production tubing in oil and gas wells to convey oil or gas from the reservoir. It has an outside diameter not exceeding 114.3 mm and wall thickness ≤9.5 mm, classified under 7304.29.50.15 as non-alloy steel tubing for drilling applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of alloy steel
Alloy steel versions (e.g., containing chromium or molybdenum > specified limits) fall under 7304.59 for alloy casing/tubing.
If welded rather than seamless
Welded steel tubing, even for oilfield use, is classified in Chapter 73 heading 7306 for other welded tubes.
If outside diameter exceeds 114.3 mm
Larger diameter tubing (>114.3 mm OD) is covered under 7304.29.10.40 or similar for bigger sizes.
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Import Tips & Compliance
• Verify API 5CT certification and provide mill test certificates (MTC) to confirm seamless construction and non-alloy steel composition
• Check outside diameter ≤114.3 mm and wall thickness ≤9.5 mm measurements; non-conformance may shift to other subheadings
• Include end-user declaration specifying oil/gas drilling use to avoid reclassification as general pipe under 7304.19
Related Products under HTS 7304.29.50.15
J55 Casing Tubing 2-3/8 inch
Seamless J55 grade non-alloy steel tubing with 2-3/8 inch (60.3 mm) OD and wall thickness of 4.83 mm, designed for oil well casing and production tubing in drilling operations. Meets API 5CT standards for oil/gas drilling, fitting 7304.29.50.15 due to size specs and non-alloy composition.
L80 Type 1 Production Tubing 2-7/8 inch
Seamless non-alloy L80 Type 1 steel tubing, 2-7/8 inch (73 mm) OD with 6.45 mm wall thickness, used in oil and gas production wells for fluid transport. Classified in 7304.29.50.15 as iron/non-alloy steel tubing ≤114.3 mm OD and ≤9.5 mm wall for drilling.
K55 Drill Tubing 3-1/2 inch
Seamless K55 non-alloy steel tubing with 3-1/2 inch (88.9 mm) OD and 7.34 mm wall, employed as drill tubing in oil/gas exploration wells. Fits HTS 7304.29.50.15 for seamless non-alloy casing/tubing with OD ≤114.3 mm and thin walls.
H40 Oil Well Tubing 4 inch
Seamless H40 grade non-alloy steel tubing, 4 inch (101.6 mm) OD with 8.0 mm wall thickness, for oil well production and casing strings. Precisely matches 7304.29.50.15 criteria for small-diameter, thin-walled seamless steel tubing in drilling.
N80Q Non-Alloy Tubing 2-3/8 inch EUE
Seamless N80Q non-alloy tubing with external-upset ends (EUE), 2-3/8 inch OD, 5.21 mm wall, for gas well production. HTS 7304.29.50.15 applies to this small OD, thin-wall seamless steel for oil/gas drilling.
P110 Tubing 3 inch Thin Wall
High-strength P110 non-alloy grade seamless tubing, 3 inch (76.2 mm) OD with 7.01 mm wall thickness, used in high-pressure oil/gas wells. Classifies under 7304.29.50.15 for non-alloy drilling tubing with specified small dimensions.