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Weld Neck Flange 5'' Class 150 A105 RF STD
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Description
Weld Neck Flange 5'' Class 150 A105 RF STD
- Size: 5''
- Pressure class: Class 150
- Facing: Raised Face (RF)
- Neck thickness: STD
- Material: A105 carbon steel
- Number of bolt holes: 8
- Manufactured according to: ASME B16.5
- Weld neck flange for welding
- 3.1 material certificate available on request (free of charge)
- Applications: industrial piping systems

Alternative Name: Weld Neck Flange 5'' Class 150 A105 RF STD, ANSI weld neck flange, raised face carbon steel flange, high-pressure steel flange, butt weld flange.
Information
What is a weld neck flange used for?
Weld Neck Flange 5'' Class 150 A105 RF STD is designed for joining pipe sections and building pressure piping systems. The tapered neck provides excellent stress distribution, making the flange suitable for demanding industrial applications. It is mounted using 8 bolts and is manufactured in accordance with ASME B16.5.
Applications
- Petrochemical industry
- Steel industry
- Shipbuilding
- Marine installations
- Boilers
- Pressure vessels
- Turbines
- Industrial piping systems
A105 Carbon Steel
ASTM A105 is a forged carbon steel widely used for pipeline components, flanges, and fittings operating at ambient and elevated temperatures. It offers excellent machinability, weldability, and mechanical strength, making it ideal for pressure systems.
Equivalent material grades: 1.0460, C22.8, P245GH, P265GH, P285GH, S235JR.
Features
- ASME B16.5 compliant
- Raised Face (RF)
- STD neck thickness
- Class 150 pressure rating
- Butt weld connection
- High mechanical strength
We also offer weld neck flanges and steel rings in other sizes and pressure classes. If you have any questions, please contact us. Call +48 63 261 42 02 or email biuro@polberis.pl.
Weld Neck Flange 5'' Class 150 A105 RF STD is also available in other sizes from our product range.
Learn more about flanges here >>
Technical data
| Manufacturing Standard | ASME Standards |
| Flange Type | Welding Neck (WN) |
| Steel Grade | A105 |
| Material | Carbon Steel |
| Size | DN125 ~ 5'' ~ 133mm ~ 139,7mm |

