Orifice Welding Neck Flanges
Raj Industrials is recognized as one of the prominent suppliers of Orifice Welding Neck Flanges in India. ASME B16.36 flanges, known as orifice flanges, are utilised for measuring fluid flow within pipelines, facilitated by a flow nozzle mounted on the flange.
Orifice Welding Neck Flanges are available in Class #300 to Class #2500. Orifice Class #300 flanges come in weld neck end, slip-on, and threaded types.
Orifice Class #600 and higher flanges are exclusively weld neck ends. ASME B16.36 orifice flanges are manufactured in various grades and sizes.
During the inspection of Orifice Welding Neck Flanges, it is essential to examine the hub length, bolt circle, bolt hole diameter, straightness, bolt hole alignment, weld end thickness, outer and inner body diameters, and tap hole dimensions.
Orifice flanges according to ASME B16.36 are offered in weld neck, threaded, and socket weld types, available in diverse dimensions and all ASTM forged grades (182, A350, A105, and A694).
A union of two orifice flanges constitutes an Orifice Welding Neck Flanges assembly. While similar to slip-on or weld neck flanges, stainless steel orifice flanges per ASME B16.36 undergo additional machining. Notably, orifice flanges feature radial tapped holes in the flange ring for metre connections and additional bolts serving as jack screws, facilitating flange separation during orifice plate replacement or inspection.
