API 5CT N80 Casing with Coupling
This is seamless steel tubing classified under HTS 7306.29.81.10, designed specifically for oil and gas drilling operations as casing to line boreholes. It features threaded couplings pre-attached for easy connection on-site, meeting API 5CT standards for N80 grade steel. The 'imported with coupling' specification ensures it's ready for immediate deployment in drilling rigs.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless and not explicitly for drilling
Seamless tubes of iron/steel not specified for oil/gas drilling fall under general casing/tubing in 7304.
If welded construction
Welded (not seamless) casing/tubing for oil/gas drilling shifts to 7306.19 headings.
If imported without couplings
Tubing imported separately from couplings classified under tube fittings in 7307.
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
• Verify API 5CT certification and provide mill test reports (MTRs) to Customs for classification validation
• Ensure couplings match tubing specs to avoid reclassification as separate components under 7304 or 7307
Related Products under HTS 7306.29.81.10
4-1/2" L80 Production Tubing with Coupling
4-1/2 inch L80 tubing with couplings for production phase in oil wells, ensuring flow control post-drilling. Fits 7306.29.81.10 as coupled gas drilling tubing.
Premium LTC Tubing for Gas Wells
Long Thread and Coupling (LTC) premium tubing for gas wells, imported coupled under 7306.29.81.10.
API 5CT C90 Sour Service Tubing
C90 tubing for H2S environments, coupled for drilling.
3-1/2" P110 Tubing with Coupling
3-1/2" P110 high-collapse tubing, coupled.
T95 Deviated Well Tubing
T95 tubing for directional drilling, with couplings.
Q125 Ultra High Strength Tubing
Q125 tubing for extreme conditions.