Long Weld Neck Flange Applications

Industrial long weld neck flanges are commonly employed in high pressure and high temperature scenarios, particularly in the oil, gas, and petrochemical industries. These flanges, also known as nozzles, function as an extension of the neck and can even replace pipes.

Unlike regular weld neck flanges, long weld neck flanges have an extended neck that acts as a boring extension. They are typically used in situations where square cuts are required to replace pipe, rather than being welded directly to pipes. Thus, long weld neck flanges do not have schedule bores.

The long weld neck flange manufacturer must adhere to ASME standards to ensure uniformity in size, material, weight, and shape. This is necessary for proper fitting within pipe applications that experience varying temperatures and pressures, such as water and gas sources. Given the high-pressure conditions involved, it is essential to have well-forged long weld neck connections.

The flanges can be customized to meet your specific needs, whether you require standard lengths or a custom size. We offer a wide range of material grades, including forged carbon steel and stainless steel, as well as chrome and nickel alloy options for nozzle flanges. Our long weld neck flanges are designed to improve pipe flow.

Examples of connection options include the heavy barrel, which offers increased support due to its thicker size. The intermediate barrel provides more support than the heavy barrel, while the equal barrel offers the highest level of support and is ideal for areas with changing pressure and temperature.