Weld Neck Flanges (WNRF) are high-performance pipe flanges designed with a long tapered hub that provides exceptional strength and stress distribution in high-pressure and high-temperature piping systems. These flanges are butt-welded directly to the pipe, ensuring a strong, leak-proof connection while reducing turbulence and minimizing the risk of erosion.
Manufactured in accordance with international standards such as ASME B16.5, ASME B16.47, DIN, BS, and EN specifications, our Weld Neck Flanges are available in Stainless Steel, Duplex Steel, Super Duplex Steel, Inconel, Monel, Hastelloy, Nickel Alloy, Titanium, Cupro Nickel, and other special alloys. They are widely used in oil & gas, petrochemical, power generation, chemical processing, offshore, marine, and refinery industries where reliability and long service life are essential.
Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size: 1/2″ to 36″
Class/Pressure: 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Form: Weld Neck Flanges
Advantages
- Long tapered hub design provides excellent strength and minimizes stress concentration in high-pressure piping systems.
- Precision machined and manufactured to international standards for superior sealing performance and leak-free connections.
- Each flange undergoes strict dimensional inspection, material verification, and quality testing to ensure consistent performance and reliable operation.
- Available in customized sizes, pressure classes, face types, materials, and special alloy grades to meet project-specific requirements.
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