Standard Orifice Flange with Weld Neck

Release time：2026-02-10    Click：11

　　Standard orifice flange with weld neck is a critical component in fluid measurement systems, designed to provide accurate flow rate measurement of liquids, gases, and vapors in industrial pipelines. Orifice flanges are used in conjunction with orifice plates to create a restriction in the pipeline, which generates a pressure difference that can be measured to calculate flow rate. The weld neck design of these standard flanges ensures a secure, leak-tight connection to the pipeline, making them suitable for high-pressure, high-temperature, and critical service applications.

　　The weld neck feature is a key advantage of these standard orifice flanges. Unlike slip-on or threaded flanges, the weld neck design has a long, tapered neck that is welded directly to the pipeline, distributing stress evenly across the connection and reducing the risk of leakage. This design also provides excellent structural integrity, enabling the flange to withstand high pressure and temperature fluctuations— common in oil & gas, chemical, and power generation industries. Additionally, the weld neck connection minimizes turbulence in the fluid flow, ensuring accurate and consistent measurement by the orifice plate.

　　Beyond performance, standard orifice flanges with weld neck offer practical benefits for installation and maintenance. They are manufactured to international standards (such as ASME/ANSI), ensuring compatibility with standard pipeline components and orifice plates. The flanges are available in a range of sizes, materials (including carbon steel, stainless steel, and alloy steel), and pressure ratings, making them adaptable to diverse industrial applications. The weld neck design also facilitates easy inspection and replacement of the orifice plate, as the flange can be disassembled without damaging the pipeline. For engineers and plant operators seeking accurate, reliable fluid measurement in critical applications, standard orifice flanges with weld neck are an essential component.

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