Ductile Iron Grooved End Coupling
Cast ductile iron coupling with roll-grooved ends for mechanical pipe joining. Under HTS 7307.19.90.80 as other cast fittings despite grooving. Used in fire protection systems.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for iron/steel tubes of 7306
Tube-specific couplings have dedicated codes.
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Import Tips & Compliance
• UL/FM listings mandatory for fire protection use
• Groove dimensions per CWP/AWWA specs
• Separate from Victaulic-style retainers which may be 7307.99
Related Products under HTS 7307.19.90.80
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