Weld Neck Flange
A weld neck flange with a long tapered hub butt welded to the pipe, giving the strongest and most fatigue-resistant flanged connection.
The weld neck flange features a long tapered hub that is butt welded to the pipe so the flange and pipe become a continuous, reinforced unit. Manufactured to ASME B16.5, its gradual transition in thickness reduces stress concentration and makes it the preferred choice for high-pressure, high-temperature and cyclic service where joint integrity is critical. The bore matches the pipe to maintain smooth flow, and the raised or ring-type-joint face provides a precise gasket seat, delivering the most robust and reliable bolted connection in the flange family.
Specifications
Key Features
- Long tapered hub butt welded to pipe for full strength
- Gradual thickness transition lowers stress concentration
- Best fatigue and high-pressure performance of any flange
- Matched bore preserves smooth flow
- Class 150 to 2500, RF or RTJ faces
Options
- Faces: RF, RTJ
- Classes: 150, 300, 600, 900, 1500, 2500
- Materials: A105, A182 F304/F316
Standards & Certifications
- ASME B16.5
- ASME B16.47
- ASTM A105 / A182
Get in Touch
Have a question or ready to order? Reach out and our team will get back to you with pricing and availability.
- Phone1300 62 4020
- International+61-8-9377 0449
- Emailinfo@PRPL.com.au
- AddressPerth Warehouse
6/11 Guthrie Street, Osborne Park, WA 6017
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