Ductile Iron Threaded Coupling
A straight-through threaded coupling of ductile cast iron for joining two threaded pipes end-to-end. HTS 7307.19.30.60 applies to this threaded cast ductile fitting. Ideal for repair or extension in municipal water distribution lines.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel construction
Stainless threaded couplings shift to stainless-specific provisions.
If smaller diameter under prior suffixes
Size-based statistical breaks exist before 'other' threaded.
If sold as a set with unions
Assembled pipe sets classify by essential character or specific set rules.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Use ASTM A536 standards documentation to validate ductile iron properties
• Ensure threads are factory-cut on castings, not post-machined, to stay in cast category
• Avoid bulk packaging mislabeled as parts; retail-packed may need GRI 3 rules
Related Products under HTS 7307.19.30.60
Threaded Ductile Iron Hex Bushing
Hexagonal-head threaded bushing of ductile cast iron for easy installation in tight spaces. HTS 7307.19.30.60 covers this threaded ductile fitting type. Popular in mechanical and irrigation piping.
Ductile Iron Threaded Cap Fitting
A threaded cap of ductile cast iron used to seal the end of pipes. Fits HTS 7307.19.30.60 as an other threaded ductile fitting. Common in temporary shutdowns or system ends.
Ductile Iron Threaded Floor Flange
Threaded floor flange of ductile cast iron for securing pipes to floors. HTS 7307.19.30.60 for this threaded ductile type despite flange name. Used in drainage or exposed piping.
Threaded Ductile Iron Barrel Nipple
Long straight nipple with threads on both ends, ductile cast iron. Under HTS 7307.19.30.60 as threaded coupling-like fitting. For spacing in pipe runs.
Ductile Iron Threaded Wye Fitting
Y-shaped threaded wye of ductile iron for branch lines in drainage. HTS 7307.19.30.60 covers threaded other ductile cast fittings. Standard in sanitary sewer laterals.
Threaded Ductile Iron Adapter Fitting
Threaded adapter converting thread types or genders, ductile cast iron. Fits HTS 7307.19.30.60 as other threaded ductile. For mismatched piping systems.