Ductile Iron Grooved Union 3 Inch
Grooved-end ductile iron union fitting for 3-inch pipes, used in mechanical coupling systems for fire sprinklers and irrigation. HTS 7307.19.90.30 applies to this cast union fitting, excluding socket weld or flanged types. Provides leak-proof seals in high-flow applications.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If stainless steel grooved
Material trumps connection type; stainless goes to 7307.23 or specific stainless suffixes.
If over 100 psi rating
Pressure capacity creates statistical distinctions within other cast fittings.
If sold as threaded flange-union combo
Hybrid designs with flange features may classify under flanged fittings heading.
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 groove specifications (e.g
• Victaulic compatible) in invoices to support union classification
• Test reports for tensile strength help differentiate ductile from grey iron for correct subheading
• Bulk shipments often face valuation disputes; use transaction records for fair market value
Related Products under HTS 7307.19.90.30
Cast Steel Pipe Union 1 Inch
A cast steel union fitting designed for connecting two pipes of 1-inch diameter, allowing easy disconnection without cutting the pipe. It falls under HTS 7307.19.90.30 as a cast iron or steel pipe fitting specifically classified as a union, not elbows or couplings. Used in plumbing and industrial piping systems for maintenance.
Malleable Iron Threaded Union 2 Inch
Threaded malleable iron union for 2-inch pipes, featuring a nut and three-piece design for straight-line connections in water and gas lines. Classified under HTS 7307.19.90.30 as other cast fittings that are unions. Ideal for HVAC and fire protection systems.
Cast Steel Socket Weld Union 1/2 Inch
Socket weld cast steel union for 1/2-inch high-pressure pipes, common in oil and gas lines. Falls under HTS 7307.19.90.30 as a cast union fitting, distinct from buttweld elbows. Enables precise alignment and easy disassembly.
Grey Iron Pipe Union 4 Inch
Large 4-inch grey cast iron union for municipal water mains and drainage systems. Classified in HTS 7307.19.90.30 for other cast unions, providing robust, corrosion-resistant joints. Features mechanical joint ends for easy field assembly.
Cast Iron Service Union 3/4 Inch
3/4-inch cast iron service union for connecting meters in utility water services. HTS 7307.19.90.30 covers this cast union, designed for frequent access without pipe disruption. Ball or ground joint mechanism ensures tight seals.
Threaded Steel Union Adapter 1-1/2 Inch
1-1/2 inch cast steel union with reducer adapter ends for mismatched pipe sizes. Under HTS 7307.19.90.30 as other cast unions despite adapter feature. Used in process piping for chemical plants.