4-1/2 inch 13.8# Alloy Casing
Seamless alloy steel casing, 4-1/2 inches (114.3 mm) in outside diameter with a wall thickness of 10.2 mm, weighing 13.8 lb/ft. Used as production casing in oil wells to line the borehole and prevent collapse. Classified under tariff item 7304.23.00 as other drill pipe of a kind used in drilling for oil or gas.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the casing is made of non-alloy steel
Tariff item 7304.29.00 covers other casing and tubing of iron or steel, seamless, not of alloy steel.
If the product is specifically designed as casing rather than drill pipe
This item covers casing of a kind used in drilling for oil or gas, seamless, of stainless steel.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Ensure the casing meets API specifications and provide a mill test certificate to verify alloy composition
• Verify the wall thickness and diameter match the declared tariff classification to avoid reclassification
• Consult the CBSA's D10 tariff classification advance ruling if unsure about the product's classification
Related Products under Tariff item 7304.23.00
10-3/4 Inch Directional Drilling Pipe
Seamless alloy steel drill pipe optimized for directional and horizontal drilling, with a 10-3/4 inch (273 mm) outside diameter and high torsional strength. Used in oil and gas drilling to transmit torque and drilling fluid. Classified under tariff item 7304.23.00 as other drill pipe of alloy steel.
114.3 mm Alloy Steel Heavy Weight Drill Pipe
Heavy weight drill pipe (HWDP) of seamless alloy steel, 114.3 mm outside diameter with an 11 mm wall thickness, featuring upset ends for tool joint welding. Essential transition pipe between drill collars and regular drill pipe in oil and gas drilling, classified under tariff item 7304.23.00.
127 mm OD Q125 High-Strength Drill Tubing
Proprietary Q125 grade seamless alloy steel tubing with a 127 mm outside diameter and 13.2 mm wall thickness for ultra-deepwater drilling. API 5CT compliant with enhanced collapse resistance, classified under tariff item 7304.23.00.
13-3/8 Inch Large Bore Alloy Drill Pipe
Extra-large seamless alloy steel drill pipe with a 13-3/8 inch (339.7 mm) outside diameter, designed for large bore oil wells and geothermal drilling applications. Provides high strength and durability for demanding drilling conditions. Classified under tariff item 7304.23.00 as other drill pipe of alloy steel.
2-7/8 inch Drill Stem Tubing Alloy Steel
2-7/8 inch (73 mm) outside diameter seamless alloy steel drill stem tubing with a 7.5 mm wall thickness, designed for slim hole drilling applications. Its high-strength grade for extended reach drilling places it under tariff item 7304.23.00 as other drill pipe.
3-1/2 Inch 13.30 lb/ft G-105 Range 2 Drill Pipe
This is a seamless drill pipe made of nonalloy steel, specifically G-105 grade, with a 3-1/2 inch outer diameter and 13.30 lb/ft weight. It is used in slimhole directional drilling for gas wells and features internal plastic coating for corrosion protection. As a drill pipe of a kind used in drilling for oil or gas, it falls under tariff item 7304.23.00.