Welding Neck Flanges have a long tapered hub and are often used for high pressure applications. When ordering a weld neck flange, it is important to specify the schedule pipe is being used for. This is because the inside diameter of the flange will match the inside diameter of your pipe.
The buttweld joint this flange has with the pipe along with the tapered hub, makes this flange very resistant to dishing and a very sturdy connection. These welding neck flanges are ideal for extreme fluctuations of temperature and in environments where there may be a lot of bending and handling of the flanges.
The stainless steel welding neck flanges DIn /PN16 are attached by welding to the pipe to the neck of the flange. This transfers stress from the flange to the pipe instead. It also reduces the stress concentration from the base of the hub. Weld neck flanges are often used for applications where high pressure is a factor. The inside diameter of the flange is designed to match the pipe’s inside diameter. Weld Neck Pipe flanges with a hub have published specifications that range from DN10 up to Dn1000. Our company provides these in all material grades, specifications and sizes.