Stainless Steel Pipe Coupling
A straight stainless steel coupling used to join two pipes of equal diameter in fluid transfer systems, featuring a weld-end or slip-fit design. It is classified under tariff item 7307.29.99 as an 'other' stainless steel tube or pipe fitting, not flanged, threaded, or socket-weld type.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the coupling is not further worked than forged or bent to shape
Couplings that have not been machined or otherwise worked beyond forging or bending are classified under this item.
If the coupling is for use in mining applications
Stainless steel fittings for mining face breaking are classified under this item.
If the coupling is for oil or natural gas well installations
Fittings for wellhead to field marketing valve installations are classified under this item.
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
• Document the coupling's connection type (e.g
• butt-weld, slip-on) to support classification
• Ensure the coupling is not threaded, as threaded couplings are classified under a different item
• Provide the pipe schedule and diameter for CBSA verification
Related Products under Tariff item 7307.29.99
1-1/2 Inch Stainless Reducing Nipple
A stainless steel pipe nipple with male threads on both ends, reducing from 1-1/2 inch to 1 inch to connect pipes of different diameters. It is classified under tariff item 7307.29.99 as an 'other' fitting of stainless steel, not further worked than forged or bent.
304 Stainless Steel Close Nipple 1 Inch
A short-length 304 stainless steel close nipple with full-length threading and minimal shoulder, used for tight-space pipe connections. It falls under tariff item 7307.29.99 as an 'other' stainless steel fitting, not further worked than forged or bent.
316 Stainless Steel Hex Nipple 3/4 Inch
A heavy-duty 316 stainless steel hex nipple with a hexagonal middle section for wrench gripping and male NPT threads on both ends. It is classified under tariff item 7307.29.99 as an 'other' stainless steel fitting, not further worked than forged or bent.
Butt-Weld to Threaded Stainless Nipple
A hybrid stainless steel nipple with one butt-weld end and one threaded end, used to transition between welded and threaded pipe connections. It falls under tariff item 7307.29.99 as an 'other' stainless steel fitting, not further worked than forged or bent.
Duplex Stainless Steel Nipple 1-1/2 Inch
A high-strength duplex stainless steel nipple (e.g., 2205) for oil and gas piping, offering superior corrosion resistance compared to 316. It is classified under tariff item 7307.29.99 as an 'other' stainless steel fitting, not further worked than forged or bent.
Food Grade Stainless Tube Nipple 4 Inch
A polished stainless steel tube nipple with sanitary threading for dairy and food transfer lines. It falls under tariff item 7307.29.99 as an 'other' stainless steel fitting, not further worked than forged or bent.