Heavy Wall 9-7/8" 57 lb/ft N-80 Casing
9.875 inch (251 mm) OD N-80 seamless casing with 22.5 mm wall thickness for sour service oil wells. Thick walls and OD fit 7304.29.20.40 perfectly for non-alloy drilling casing.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If smaller OD range
OD <215.9 mm heavy wall goes to lower diameter subheading.
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
• HIC/SSCC test certs mandatory for sour service claims
• Color coding per API for grade ID aids inspection
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