4-1/2 Inch OD API 5CT N80 Oilfield Tubing
Seamless steel tubing made from non-alloy steel with an outside diameter of 114.3 mm to 215.9 mm, specifically designed for oil and gas well casing and production. It meets API 5CT specifications for N80 grade, used to line boreholes and transport hydrocarbons. Classified under 7304.29.50.45 due to its seamless construction, non-alloy steel material, and size range for drilling applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded rather than seamless
Welded steel tubes for oil/gas drilling fall under heading 7306, while seamless are in 7304.
If made from alloy steel instead of non-alloy
Alloy steel composition shifts classification to 7304.39 subheading from non-alloy 7304.29.
If outside diameter 60.3 mm or less
Smaller diameter tubing for oil/gas is classified under 7304.29.10, not the larger 7304.29.50 range.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify API 5CT certification and mill test reports (MTRs) for compliance with oilfield standards
• Ensure accurate measurement of outside diameter to confirm fit within 114.3-215.9 mm range
• Declare as 'casing/tubing for oil/gas drilling' to avoid misclassification as general pipe
Related Products under HTS 7304.29.50.45
5 Inch OD L80 Type 1 Oil Well Tubing
Seamless non-alloy steel tubing with 127 mm outside diameter, API 5CT L80 Type 1 grade for sour service environments in oil and gas wells. Used as production tubing to convey oil or gas from reservoir to surface. Fits HTS 7304.29.50.45 as seamless iron/non-alloy steel tubing in the specified diameter range for drilling operations.
4-1/2 Inch OD J55 Casing Tubing
Seamless J55 grade non-alloy steel tubing, 114.3 mm OD, API 5CT certified for intermediate casing in oil drilling to stabilize wellbore. Common in onshore wells for pressure containment. Classified in 7304.29.50.45 for its seamless nature, non-alloy composition, and diameter specs for oil/gas drilling.
5-1/2 Inch OD K55 Production Tubing
API 5CT K55 grade seamless tubing, 139.7 mm OD, non-alloy steel for production strings in gas wells. Provides corrosion resistance and strength for fluid flow. Meets 7304.29.50.45 as casing/tubing, seamless, non-alloy steel in the 114.3-215.9 mm OD range.
7 Inch OD N80Q Tubing for Sour Gas
Seamless N80Q non-alloy steel tubing, 177.8 mm OD, API 5CT Quenched & Tempered for H2S sour gas environments. Used in completion strings for offshore wells. Fits HTS 7304.29.50.45 criteria: seamless, non-alloy, drilling tubing size.
6-5/8 Inch OD P110 High Pressure Tubing
API 5CT P110 grade seamless non-alloy tubing, 168.3 mm OD, for high-pressure deep wells in oil drilling. Offers premium yield strength for liner applications. Classified under 7304.29.50.45 for seamless non-alloy steel tubing in specified diameter.
4-3/4 Inch OD J55 Intermediate Casing Tubing
Seamless J55 non-alloy steel tubing at 120.65 mm OD for intermediate casing in shale gas wells. API 5CT compliant for borehole support. 7304.29.50.45 applies due to seamless construction, material, size, and oil/gas drilling purpose.