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Threaded Ductile Iron Union Fitting

A threaded union fitting from ductile iron allowing easy disconnection of pipes without cutting. Under HTS 7307.19.30.60 for threaded cast ductile types. Used in maintenance-heavy water lines.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China5.6%+75.0%80.6%
🇲🇽Mexico5.6%+50.0%55.6%
🇨🇦Canada5.6%+50.0%55.6%
🇩🇪Germany5.6%+50.0%55.6%
🇯🇵Japan5.6%+50.0%55.6%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

7307Same rate: 80.6%

If stainless with threaded ends

Stainless unions specifically provided in 7307.41.

7307.99.30.00Lower: 78.2% vs 80.6%

If malleable iron

Malleable threaded unions separate from ductile.

7307.92Lower: 18.7% vs 80.6%

If sold as pipe set

Pipe unions in sets classify by set provisions.

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

• Detail nut and tailpiece construction in docs to confirm union design

• Pressure test certs helpful for high-duty lines