Cast Iron Ductile Pipe Fitting Adapter 4-inch
4-inch ductile cast iron adapter fitting connecting soil pipes to dissimilar materials. Though fittings, as integral hollow extensions of cast iron pipes, it falls under HTS 7303.00.00 for hollow profiles.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +37.5% | 37.5% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +12.5% | 12.5% |
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 cast steel threaded fittings
Other iron/steel cast fittings without pipe profile go to 7307.99.
If precision ductile iron tubes
Narrower ductile tubes shift within Chapter 73 but to 7304 for specific types.
If valve-integrated adapters
If containing valve mechanisms, classifies as appliance under 8481.
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
• Differentiate 'ductile' variants with tensile strength certs (>60,000 psi) vs gray iron
• Bundle with gaskets but declare separately to avoid set classification
Related Products under HTS 7303.00.00
Cast Iron Storm Drain Pipe 10-inch Bell Spigot
10-inch bell-and-spigot joint cast iron pipe for stormwater management in urban drainage. HTS 7303.00.00 for jointed hollow cast iron profiles.
Industrial Cast Iron Process Pipe 6-inch
6-inch cast iron pipe for industrial process lines handling slurries and corrosives. Under HTS 7303.00.00 as robust hollow profiles for chemical and mining operations.
Cast Iron Condensate Drain Pipe 1.5-inch
1.5-inch cast iron pipe for HVAC condensate drainage from air handlers. As a small-diameter hollow profile of cast iron, it fits HTS 7303.00.00.
Cast Iron Soil Pipe 4-inch Diameter
A 4-inch diameter cast iron pipe used in plumbing systems for drainage, waste, and vent applications. It falls under HTS 7303.00.00 as it is a hollow profile made entirely of cast iron, designed for conveying sewage and wastewater in residential and commercial buildings.
Cast Iron Drain Pipe 6-inch Hubless
Hubless cast iron pipe measuring 6 inches in diameter, commonly used for stormwater drainage and sanitary sewer lines. Classified under HTS 7303.00.00 due to its cast iron construction and hollow profile seamless design for underground conveyance.
Cast Iron Vent Pipe 3-inch Schedule 40
Schedule 40 cast iron pipe in 3-inch size for building ventilation and stack systems in plumbing. It qualifies for HTS 7303.00.00 as a cast iron hollow profile engineered for non-pressurized air and gas venting.