Nonmalleable Cast Iron Reducing Coupling
A threaded reducing coupling of nonmalleable cast iron that joins pipes of different diameters in drainage systems. Classified under HTS 7307.11.00 for its cast construction from nonmalleable iron, providing corrosion resistance in underground applications.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 4.8% | +35.0% | 39.8% |
| 🇲🇽Mexico | 4.8% | +10.0% | 14.8% |
| 🇨🇦Canada | 4.8% | +10.0% | 14.8% |
| 🇩🇪Germany | 4.8% | +10.0% | 14.8% |
| 🇯🇵Japan | 4.8% | +10.0% | 14.8% |
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 sold as a complete flanged assembly
Flanged fittings of nonmalleable cast iron have a specific subheading distinguishing them from threaded couplings.
If for industrial machinery rather than piping
Cast iron castings not specifically pipe fittings may fall under general cast iron articles.
If coated with corrosion-resistant enamel
Certain coated or threaded steel fittings shift classification based on surface treatment and material.
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
• Provide mill test certificates specifying nonmalleable cast iron chemistry to comply with HTS material requirements
• Ensure thread standards (e.g
• NPT) match US plumbing norms to avoid import delays from non-compliance
• Watch for overclassification as malleable iron; request foundry process details if chemical analysis shows higher ductility
Related Products under HTS 7307.11.00
Cast Iron Pipe Elbow 90 Degree
A 90-degree elbow fitting made from nonmalleable cast iron, used to connect pipes at right angles in plumbing systems. It falls under HTS 7307.11.00 as a cast pipe fitting of nonmalleable cast iron, designed for durable pressure-resistant joints in water or drainage lines.
Nonmalleable Cast Iron Pipe Cap
Threaded end cap fitting of nonmalleable cast iron used to seal pipe ends in water supply lines. Falls under HTS 7307.11.00 as a standard cast pipe fitting, valued for its strength in buried applications.
Cast Iron Pipe Sleeve Coupling
Hubless sleeve coupling of nonmalleable cast iron for joining no-hub drainage pipes via clamps. HTS 7307.11.00 covers this cast fitting, widely used in modern cast iron soil pipe systems.
Cast Iron Floor Drain Trap Adapter
Nonmalleable cast iron adapter connecting floor drains to trap arms in commercial plumbing. HTS 7307.11.00 classification for its cast pipe fitting role in wastewater systems.
Nonmalleable Cast Iron Pipe Plug
Square or hex head plug of nonmalleable cast iron for sealing threaded pipe ends. Under HTS 7307.11.00 as essential cast fittings for maintenance and pressure testing.
Cast Iron Tee Pipe Fitting
A T-shaped nonmalleable cast iron fitting for branching pipes in sewer or storm drainage systems. It qualifies for HTS 7307.11.00 due to its cast nonmalleable iron composition, ideal for heavy-duty, high-pressure connections.