A welding neck flange is a high-strength flange used in high-pressure and high-temperature piping systems. It has a long tapered hub that provides excellent stress distribution between the pipe and flange. The flange is connected to the pipe using a butt weld, ensuring a secure and leak-proof joint. This design makes it ideal for critical applications in industries like oil, gas, and chemical processing. It is available in various pressure ratings and materials such as carbon steel and stainless steel. Welding neck flanges are preferred where strength, durability, and safety are essential.