Zinc Threaded Pipe Coupling
A zinc coupling with internal threads for screwing onto threaded pipes in low-pressure gas or water lines. Falls under HTS 7907.00.20.00 as a standard zinc tube or pipe fitting example like couplings.
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 construction
Threaded steel couplings are under iron/steel pipe fittings in Chapter 73 regardless of coatings.
If sold in bulk as zinc casting stock
Unfinished zinc castings before machining into fittings are under Chapter 79 bars and profiles.
If for use in transmission shafts or pumps
Specialized couplings for machinery transmission are Chapter 84 parts.
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Import Tips & Compliance
• Specify thread standard (NPT/BSP) in invoices to prevent classification as custom machined parts
• Test reports for zinc >97.5% required; alloys per note (b) may incur different MFN duties
• Avoid pitfall of declaring as 'universal' fittings, which can lead to broader Chapter 84 appliance classification
Related Products under HTS 7907.00.20.00
Zinc Plumbing Pipe Elbow
A curved zinc fitting used to connect plumbing pipes at an angle, commonly in water supply systems. It falls under HTS 7907.00.20.00 as a zinc pipe fitting designed for joining tubes or pipes in fluid conveyance applications.
Zinc Exhaust Pipe Connector
Corrosion-resistant zinc connector for vehicle or industrial exhaust pipes to join sections durably. Falls under HTS 7907.00.20.00 as a zinc pipe fitting for gas exhaust tube systems.
Zinc Galvanized HVAC Duct Coupling
A cylindrical zinc sleeve coupling used to join HVAC duct pipes for air distribution systems. Classified under HTS 7907.00.20.00 as a zinc tube or pipe fitting for mechanical joining in ventilation applications.
Zinc Irrigation Pipe Sleeve
A protective zinc sleeve fitting for connecting and sealing agricultural irrigation pipes against corrosion. It is included in HTS 7907.00.20.00 as a zinc pipe fitting for water distribution in farming systems.
Zinc Corrugated Roof Drain Pipe
Corrugated zinc pipe section for directing rainwater from roof gutters to drainage systems. Classified in HTS 7907.00.20.00 as a zinc tube or pipe for construction fluid management.
Zinc Pipe Reducer Fitting
A zinc fitting that connects pipes of different diameters, tapering from large to small for plumbing transitions. Under HTS 7907.00.20.00 as an example pipe fitting for size adaptation in tube systems.