Cast Iron Hub and Spigot Soil Pipe 4-inch
A 4-inch diameter cast iron pipe with hub and spigot joints designed specifically for soil and waste drainage systems in buildings. It falls under HTS 7303.00.00.30 as a cast iron soil pipe used for conveying sewage and wastewater vertically through plumbing stacks. The hub-and-spigot connection allows for easy assembly with leaded joints.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used for pressure water mains rather than drainage
Pipes not designated for soil/waste drainage classify as other cast iron tubes/pipes, changing the statistical suffix.
If threaded or welded fittings for pipe connections
Cast iron pipe fittings like elbows or couplings fall under Chapter 73 heading for tube/pipe fittings.
If imported as assembled parts of sanitary water waste pumps
Pipes imported as integral components of pumps or similar machinery may classify under pump parts.
Not sure which classification is right?
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Import Tips & Compliance
• Verify pipe meets ASTM A74 standards for hub and spigot cast iron soil pipe to ensure compliance with US plumbing codes
• Include mill test reports certifying material composition and pressure ratings in import documentation
• Avoid misclassification as general cast iron pipes (7303.00.00.60); specify 'soil pipe' on commercial invoice
Related Products under HTS 7303.00.00.30
No-Hub Cast Iron Soil Pipe 6-inch
A 6-inch no-hub cast iron soil pipe joined with stainless steel clamps and neoprene gaskets for underground and vertical drainage applications. Classified under HTS 7303.00.00.30 due to its specific design for soil, waste, and vent (DWV) systems in commercial plumbing. No-hub design offers flexibility and corrosion resistance.
Cast Iron Soil Stack Pipe 3-inch
3-inch diameter cast iron pipe engineered for vertical soil stacks in multi-story buildings to carry waste from plumbing fixtures to sewers. HTS 7303.00.00.30 applies as it's a specialized soil pipe with thick walls for structural support and durability. Typically features hubless or hub-and-spigot ends.
Heavy Duty Cast Iron Drain Waste Vent Pipe 5-inch
5-inch heavy wall cast iron pipe for drain, waste, and vent (DWV) systems handling high-volume wastewater in industrial facilities. Falls under HTS 7303.00.00.30 as dedicated soil pipe with superior sound deadening and fire resistance properties. Meets stringent ASTM A888 specifications.
ASTM A74 Hubless Soil Pipe 4x10 ft
10-foot length 4-inch hubless cast iron soil pipe conforming to ASTM A74 for above- and below-ground waste piping. Specifically classified in HTS 7303.00.00.30 for its soil drainage function with plain ends for mechanical couplings. Provides longevity over 100 years in service.
Cast Iron Vertical Soil Branch Pipe Y-fitting
Y-shaped cast iron soil pipe section for vertical branching in drainage stacks, 4-inch main to 3-inch branch. HTS 7303.00.00.30 covers this specialized soil pipe configuration essential for multi-fixture plumbing risers. Cast in single piece for leak-free joints.
Extra Heavy Cast Iron Soil Pipe 8-inch
8-inch extra heavy wall cast iron soil pipe for municipal building sewers and large commercial drainage. Classified HTS 7303.00.00.30 for extreme durability in high-abuse soil/waste applications. Thicker walls than standard service weight pipe.