6-5/8 inch H-40 Casing with BTC Threads from United States
H-40 casing with buttress threads, 168.3 mm OD and 16.0 mm wall, seamless nonalloy steel. Used for oil drilling to provide structural integrity in wells, this casing meets the tariff item's description for oil/gas casing.
Duty Rate — United States → Canada
50%
Rate breakdown
26SUR5050%United States Surtax Order (2026) — 50% on US products
Import Tips
• Confirm the buttress thread specification on the commercial invoice
• Have the steel grade certificate ready for CBSA
• Verify if the casing qualifies for duty-free treatment under a free trade agreement