Carbon Steel Weld Neck Flanges – ANSI B16.5, RF, Class 150/300

These Carbon Steel Weld Neck Flanges (WNRF) are manufactured according to ANSI/ASME B16.5 standards and are designed for high-integrity connections in pressure piping systems. The weld neck design features a tapered hub that provides excellent stress distribution through the weld joint, making them ideal for high-pressure, high-temperature, or cyclic loading environments. The flanges come with a raised face (RF) for gasket compatibility and are finished with a black anti-corrosion coating to ensure extended service life in demanding applications. Available in estimated sizes from 6" to 10", and likely pressure rated for Class 150 or 300, these flanges are widely used in oil & gas, petrochemical, power, and industrial piping systems.

Specification:

– Product Type: Weld Neck Flange (WNRF)
– Material: Carbon Steel (forged)
– Size Range: 6" to 10" (DN 150 to DN 250) – estimated
– Face Type: Raised Face (RF)
– Pressure Rating: ANSI Class 150 / 300 (visual estimate – to be confirmed)
– Standard: ANSI/ASME B16.5
– Surface Finish: Black coated for corrosion protection
– Neck Type: Long tapered hub for butt welding
– End Connection: Butt Weld
– Application: High-pressure pipelines, valves, and equipment interfaces
– Industries: Oil & Gas, Chemical, Power Generation, Industrial Plants
– Bolt Holes: Standard B16.5 bolt circle and dimensions
– Testing: Dimensional inspection, material certification (on request)
– Markings: Size, pressure rating, material grade, and heat number (if visible)
– Manufacturing Method: Forged
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