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Coupling 1" BSPT A350 LF2 Class 3000
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Description
Coupling 1" BSPT A350 LF2 Class 3000
- Size: 1" (thread diameter: 30.3–30.8 mm)
- Dimension D: 44 mm
- Dimension W: 60 mm
- Thread type: BSPT (ISO 7 Rc tapered pipe thread)
- Material: A350 LF2 carbon steel (properties similar to P355NH / S355J2 for low-temperature and high-pressure applications)
- Operating temperature: -46°C to +343°C
- Impact tested at -46°C
- Pressure class: Class 3000 (206 bar)
- Excellent weldability
- Applications: Industry, exported machinery, pressure systems, hydraulic systems, demanding industrial installations, central heating systems
- 3.1 material certificate available on request (free of charge)
- Marking: Size, pressure class, material grade, heat number, and thread type stamped on the coupling
- Origin: European Union

Alternative Name: Coupling 1" BSPT A350 LF2 Class 3000, female threaded coupling, full coupling, high-pressure BSPT coupling, tapered thread coupling, forged steel coupling, socket coupling.
Information
The 1" BSPT A350 LF2 Class 3000 Coupling is a high-pressure threaded fitting designed for demanding industrial applications. The BSPT tapered thread provides a reliable and leak-tight connection for pressure piping systems. Each coupling is permanently marked with its size, pressure class, material grade, heat number, and thread type.
A350 LF2 carbon steel is a low-alloy steel widely used for forged fittings, valves, flanges, and piping components intended for low-temperature service. It combines excellent weldability with high mechanical strength and reliable performance in pressure applications.
Material
- A350 LF2 carbon steel
- Suitable for low-temperature service
- Excellent weldability
- High mechanical strength
Advantages
- High-pressure design
- BSPT tapered thread
- Excellent weldability
- Impact tested at -46°C
- Long service life
- Reliable threaded connection
Applications
Pressure systems, hydraulic installations, industrial machinery, refineries, power plants, exported equipment, central heating systems, and general industrial piping.
We also offer BSPT threaded couplings in many other sizes. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.
Learn more about threaded couplings here >>
Technical data
| Coupling Type | Coupling |
| Material | Carbon Steel |
| Pressure | Pressure Range 101–250 bar |
| Connection 1 | 1'' |
| Thread Type – Connection 1 | BSP / G / Rp / Rc Thread |
| Connection 2 | 1'' |
| Thread Type – Connection 2 | BSP / G / Rp / Rc Thread |

