Rough Forged Alloy Steel Coupling
A cylindrical coupling forged from low-alloy steel (such as 4340 grade), used to join two pipes end-to-end in mechanical and structural applications. Supplied in an as-forged condition without machining, this product falls under tariff item 7307.99.00 as an 'other' tube or pipe fitting of iron or steel.
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 coupling is of non-malleable cast iron
Cast iron fittings are classified under a different heading.
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
• Verify the coupling has no threads or machined surfaces, as this affects the tariff code
• Keep forging records and material test certificates for customs clearance
• Check if the low-alloy steel composition triggers any special import requirements
Related Products under Tariff item 7307.99.00
Alloy Steel Forged Wye Fitting
A Y-shaped wye fitting forged from 8620 alloy steel for drainage or irrigation pipe branching, supplied in a rough condition. This fitting is not machined after forging, making it suitable for applications where precise dimensions are not critical.
As-Forged Alloy Steel Sleeve Fitting
A protective sleeve forged from chromium-moly alloy steel to reinforce pipe joints, delivered rough without tooling. This sleeve is supplied in an as-forged condition, suitable for high-strength applications in industrial piping systems.
Black Iron Pipe Cap Fitting
A black iron threaded cap used to seal the ends of pipes in gas or water lines, preventing leaks and protecting the pipe interior. This product is classified under tariff item 7307.99.00 as an 'other' tube or pipe fitting of iron or steel, suitable for low-pressure applications.
Black Malleable Iron Pipe Nipple 3/4 Inch
A 3/4-inch close nipple made from black malleable iron, with NPT threads on both ends for joining pipes in low-pressure gas or water lines. Its close length allows for tight connections where space is limited. As a tube or pipe fitting of iron or steel not otherwise specified, it is classified under tariff item 7307.99.00.
Carbon Steel Cross Fitting
A carbon steel cross fitting that connects four pipes at right angles, commonly used in distribution manifolds for oil and gas lines. This high-strength fitting is classified under tariff item 7307.99.00 as an 'other' tube or pipe fitting of iron or steel, designed for demanding pressure environments.
Carbon Steel Pipe Plug
A threaded carbon steel plug used to close pipe openings in pressure systems, featuring a square head for wrench tightening. This product is classified under tariff item 7307.99.00 as an 'other' tube or pipe fitting of iron or steel, providing a reliable seal for pipe ends.