Welding Neck Flanges, NW Long Weld Neck Flanges, Pipe flanges

The Welding neck flanges is normally referred to as the high hub flange. It is designed to transfer stresses to the pipe, thereby reducing high stress concentrations at the base of the flange. The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value. It is expensive because of the design.

Standards, Dimensions & Weight

• ASME/ANSI B16.5 Class 150 WN

• ASME/ANSI B16.5 Class 300 WN

• ASME/ANSI B16.5 Class 600 WN

• ASME/ANSI B16.5 Class 900 WN

• ASME/ANSI B16.5 Class 1500 WN

• ASME/ANSI B16.5 Class 2500 WN

• ASME B16.47 Series A/MSS SP-44 Class 150 WN

• ASME B16.47 Series A/MSS SP-44 Class 300 WN

• ASME B16.47 Series A/MSS SP-44 Class 600 WN

• ASME B16.47 Series A/MSS SP-44 Class 900 WN

• ASME B16.47 Series B/API 605 Class 75 WN

• ASME B16.47 Series B/API 605 Class 150 WN

• ASME B16.47 Series B/API 605 Class 300 WN

• ASME B16.47 Series B/API 605 Class 600 WN

• ASME B16.47 Series B/API 605 Class 900 WN

• BS 3293 Class 150 WN

• BS 3293 Class 300 WN

• BS 3293 Class 600 WN

• DIN 2631 PN 6

• DIN 2632 PN 10

• DIN 2633 PN 16

• DIN 2634 PN 25

• DIN 2635 PN40




Usage:

Flanges are integral parts of many engineering and plumbing projects. In many applications, engineers need to find a way to close off a chamber or cylinder in a very secure fashion, usually because the substance inside must differ from the substance outside in composition or pressure.

They do this by fastening two pieces of metal or other material together with a circle of bolts on a lip. This "lip" is a flange.

Plumbing

You can connect two sections of metal piping by soldering or welding them together, but pipes connected in this way are very susceptible to bursting at high pressures. A way of connecting two sections of pipe more securely is by having flanged ends that you can connect with bolts. This way, even if or liquids build up to high pressures inside the pipe, it will often hold with no problem.

Mechanics

In order to connect two sections of a large, enclosed area, it is often best to used flanges and bolts. An example of this is the connection between the engine and the transmission in an automobile. In this case, both the engine and the transmission contain a number of moving parts that can easily get damaged if they get dust or other small objects inside of them. By connecting the outer casings of the engine and transmission in this way, engineers protect the inner workings of both.

Electronics

Flanges have a specific purpose in cameras and other electronic devices. Though flanges in such items do not usually have to sustain high pressures, they do have to hold tight so they can keep out harmful particles. These flanges are usually found connecting two different materials, such as the glass of a lens and the rest of the body of the camera.

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