Ductile Cast Iron Coupling 6-inch
A straight cast iron coupling for joining plain-end pipes in underground water mains. HTS 7307.19.90.80 applies to this other cast fitting of iron, suitable for municipal water distribution. Features higher tensile strength than gray iron.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically for tubes/pipes of 7304/7305/7306
Fittings designed solely for certain pipe types have dedicated subheadings.
If not cast but fabricated
Welded or fabricated couplings exclude cast classification.
If sold as set with gaskets/seals
Assembled sets with non-steel components may classify as other fittings.
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
• Include nodularity test reports for ductile iron verification per ASTM A536
• Declare exact ID/OD dimensions; mismatches lead to customs holds
• Avoid declaring as 'ductile iron pipe' which falls under Chapter 73 pipe headings
Related Products under HTS 7307.19.90.80
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Plain-end sleeve coupling made from gray cast iron for repairing underground pipes. HTS 7307.19.90.80 covers this other cast fitting. Used in utility maintenance for water/sewer lines.
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Body casting for floor drains in commercial plumbing, plain end connections. Classified HTS 7307.19.90.80 as other cast iron fittings. Connects to drain piping.
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