Welding Neck Flange

Описание

Welding Neck Flange (WN Flange) is a common type of flange connection used to connect pipes, valves, and equipment. It has the following characteristics:

1. Design Features: The design feature of the welding neck flange is that its neck has the same diameter as the pipe and is connected to a flat flange face with a tapered neck. This design provides the flange with good rigidity and strength, making it suitable for high-pressure and high-temperature environments.
2. Flange Connection: The welding neck flange is connected to the pipe or equipment by welding. One end of the neck is welded to the pipe or equipment, while the flange face is used to connect with other flanges.
3. Pressure Rating: Welding neck flanges are suitable for various pressure ratings, including common ratings such as 150LB, 300LB, 600LB, 900LB, 1500LB, and 2500LB. Different pressure ratings determine the flange’s load-bearing capacity and sealing performance.

The execution standards for Welding Neck (WN) flanges are usually determined based on different international or industry standards. Here are some common execution standards for WN flanges:

1. ASME/ANSI Standard: ASME B16.5 is the flange standard established by the American Society of Mechanical Engineers (ASME), which includes specifications and dimensions for WN flanges. Common ASME/ANSI standards include 150LB, 300LB, 600LB, 900LB, 1500LB, and 2500LB.
2. DIN Standard: DIN 2631-2638 is the flange standard established by the German Institute for Standardization (DIN), which includes specifications and dimensions for WN flanges. Common DIN standards include PN6, PN10, PN16, PN25, PN40, and PN64.
3. EN Standard: EN 1092-1 is the flange standard established by the European Committee for Standardization (CEN), which includes specifications and dimensions for WN flanges. Common EN standards include PN6, PN10, PN16, PN25, PN40, and PN64.
4. JIS Standard: JIS B2220 is the flange standard established by the Japanese Industrial Standards (JIS), which includes specifications and dimensions for WN flanges. Common JIS standards include 5K, 10K, 16K, 20K, and 40K.