Weld Neck Stainless Steel Flanges ASTM A182 ASME B16.5 1/2" to 24" Size Range 150-2500 Pressure Class
Weld neck flanges, also known as tapered hub or high-hub flanges, are engineered to transfer stress directly to connected pipes, effectively reducing high-stress concentrations at the flange base. Available in standard weld neck (WN) and long weld neck (LWN) configurations, these forged components provide superior performance in demanding industrial applications.
| Specification | Details |
|---|---|
| Size Range | 1/2" to 24" |
| Pressure Class | 150, 300, 400, 600, 900, 1500, 2500 |
| Standards | ASTM A182, ASME/ANSI B16.5 |
| Face Types | Weld Neck (WN), Long Weld Neck (LWN), Reducing Weld Neck |
| Thickness | Sch5S to Sch160, XXS |
| Applications | Marine systems, pumping stations, chemical production, food processing, irrigation systems |
| Quality Testing | Direct-reading Spectrograph, Hydrostatic testing, X-ray detection, Ultrasonic flaw detection, Magnetic particle detection |
| Certifications | Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report |
Long weld neck flanges feature extended hubs designed specifically for pressure vessel applications, functioning as integrally reinforced nozzles. These high-hub flanges eliminate the need for additional pipe sections and welding seams, providing direct vessel attachment with built-in reinforcement for enhanced structural integrity.
Reducing weld neck flanges feature tapered necks that enable direct welding to smaller diameter pipes, creating efficient size transitions within piping systems. These space-saving components eliminate the need for separate reducer fittings, making them ideal for installations with limited space constraints.
- Eliminates need for additional reducer fittings
- Reduces overall installation length compared to standard flange configurations
- Ideal for crowded industrial environments and compact piping layouts
- Stress distribution optimization for enhanced system longevity
- Forged construction for superior mechanical properties
- Multiple pressure class options from 150 to 2500
- Comprehensive quality testing and certification documentation
- Custom dimension capabilities for specialized applications
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