Cast Iron Double Hub Soil Pipe 4-inch x 5 ft
5-foot 4-inch cast iron soil pipe with hubs on both ends for continuous vertical stack installations. HTS 7303.00.00.30 specifically for this traditional soil pipe joint type using oakum/lead sealing. Ideal for high-rise applications.
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 couplings included in set
Sets with stainless fittings classify under stainless tube/pipe fittings.
If made from malleable castings rather than gray iron
Malleable iron tubes/pipes have separate Chapter 73 heading.
If pre-filled with chemical joint sealants
Chemical preparations in pipes classify as prepared chemicals.
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
• Hubs must be precisely machined; tolerances ±1/16 inch critical for joint integrity and classification
• Ship vertically banded to prevent hub damage common in horizontal container stowage
• Include jointing instructions confirming lead-oakum method vs. no-hub
Related Products under HTS 7303.00.00.30
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.
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.