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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If forged rather than cast
Forged steel fittings are classified separately from cast fittings in subheading 7307.99, changing the tariff rate.
If made of stainless steel
Stainless steel cast fittings fall under 7307.23 regardless of type, due to material composition priority in the tariff.
If sold as part of a pipe set for retail
Fittings imported in sets with pipes may be classified under different statistical suffixes based on packaging and presentation.
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Import Tips & Compliance
• Verify the fitting is cast iron or steel via mill test reports to confirm classification under 7307; forged fittings go to 7307.99
• Include pressure ratings and dimensions in documentation to avoid misclassification as flanges or adapters
• Ensure country of origin marking complies with customs rules, as Chinese castings are common and face AD/CVD scrutiny
Related Products under HTS 7307.19.90.30
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.
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.
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
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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.