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- Coupling 1/2'' steel for welding
- Washer metal rubber M10
- Coupling 1 1/4'' steel for welding
- Washer metal rubber 1/4''
- Washer metal rubber M12
- Copper washer 11x16x1mm
- Coupling 1 1/2'' steel for welding
- Washer metal rubber M14
- Washer metal rubber 1/2''
- Coupling 1'' steel for welding
- Washer metal rubber M8
- Coupling 3/4'' steel for welding
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Coupling 3/4'' NPT A105 cl.3000
Coupling 1 1/2'' NPT A105 cl.3000
Coupling 1 1/4'' NPT A105 cl.3000
Coupling 1" Socket Weld NPT x SW A105 Class 3000
Coupling 1'' NPT A105 cl.3000
Coupling 1'' NPT A350 LF2 cl.3000
Coupling 1/2" S355J2 cl.3000 NPT
Coupling 1/2" Socket Weld NPT A105 Class 3000 SW
Coupling 1/2" x 1'' NPT cl.3000 A105
Coupling 1/2'' NPT A105 cl.3000
Coupling 1/2'' NPT A105 cl.6000
Coupling 1/2'' NPT A350 LF2 cl.3000
Coupling 1/2'' x 1 1/2'' NPT cl.3000 A105
Coupling 1/4'' NPT A105 cl.3000
Coupling 1/4'' NPT A105 Class 6000 Steel
Coupling 1/4'' NPT A350 LF2 cl.3000
Coupling 1/8'' NPT A105 cl.3000
Coupling 2 1/2'' NPT A105 cl.3000
Coupling 2'' NPT A105 cl.3000
Coupling 2'' NPT P355NH A350 LF2 cl.3000
Coupling 3'' NPT A105 cl.3000
Coupling 3/4" Socket Weld NPT A105 Class 3000 SW
Coupling 3/4'' NPT A105 cl.6000
Coupling 3/4'' NPT A350 LF2 cl.3000
Coupling 3/8'' NPT A105 cl.3000
Steel NPT Threaded Couplings and Half Couplings – Internal Thread
Steel NPT threaded couplings and half couplings with internal threads are designed for connecting pipes, valves, pumps and industrial equipment using the NPT (National Pipe Thread) standard. They provide a strong, reliable and leak-tight threaded connection for hydraulic, pneumatic, oil, gas and industrial applications.
At the POLBERIS online store you will find steel NPT threaded couplings and half couplings manufactured from high-quality carbon steel, offering excellent mechanical strength and long service life in demanding operating conditions.
These products are also commonly known as NPT threaded couplings, half couplings, female couplings, socket couplings, threaded sockets, pipe couplings, threaded connectors, NPT fittings and female thread adapters.
NPT threaded couplings are widely used by hydraulic engineers, welders, plumbers, maintenance technicians, machine builders and industrial installers for connecting valves, pumps, filters, pressure gauges, compressors and other industrial pipeline components.
Whether you need a standard NPT threaded coupling or a professional half coupling for industrial installations, POLBERIS offers a wide selection of reliable steel NPT threaded fittings designed for long-lasting performance.