ANSI DIN Forged RF Rtj FF Class 1500 Stainless Steel Wn Weld Neck Flange
Weld 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 weld neck flange will match the inside diameter of your pipe. The buttweld joint weld neck flange has with the pipe along with the tapered hub, makes weld neck flange very resistant to dishing and a very sturdy connection. These weld 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 Size Of Weld Neck Flange
Size | Pressure | Schedule |
1/2" - 60" | 150# - 600# | STD - XXH |
1/2" - 48" | 900# | STD - XXH |
1/2" - 24" | 1500# | STD - XXH |
1/2" - 12" | 2500# | STD - XXH |
Weld Neck Flange Supplier
Weld Neck Flanges use a butt-weld end prep to connect a piece or pipe or a fitting to the flange. These are usually used to allow safe and fast assembly and disassembly of piping systems. These standard weld neck flanges come in 1/2 ” to 24” nominal sizes, in 150#, 300#, 400#, 600#, 900#, 1500#, and 2500# pressure class, and in schedules S/20, S/30, Standard (STD, S/40s), S/40, S/80, Extra Heavy (XH, XS, S/80s), S/100, S/120, S/140, S/160, & XXH. They can come with Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) facing as well as many others.
These standard sizes follow ANSI /ASME B16.5. We can also supply large OD flanges that follow ASME B16.47 (Series A / MSS SP-44 & Series B / API 605), Industry standard, or Custom Dimensions.
As a weld neck flange supplier, we provide these products in the following common grades: SA105, SA105N (Normalized), SA350-LF2, SA182 (F11, 304/304L, & 316/316L) A694 (F42, F52, F56, F60, F65), among countless others.
Weld Neck Flange Dimension
FLANGE NPS | Inside Diameter | Outside Diameter | Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | H | Raised Face Thickness (T) | T1 | Flat Face Thickness (T2) | Bolt Hole (B) | No. of Bolt Holes |
1/2″ | 0.93″ | 3.50″ | 2.38″ | 1.38″ | .063″ | 1.19″ | .62″ | .38″ | .56″ | .62″ | 4 |
3/4″ | 1.14″ | 3.88″ | 2.75″ | 1.69″ | .063″ | 1.50″ | .62″ | .44″ | .56″ | .62″ | 4 |
1″ | 1.41″ | 4.25″ | 3.12″ | 2.00″ | .063″ | 1.94″ | .69″ | .50″ | .63″ | .62″ | 4 |
1-1/4″ | 1.75″ | 4.62″ | 3.50″ | 2.50″ | .063″ | 2.31″ | .81″ | .56″ | .75″ | .62″ | 4 |
1-1/2″ | 1.99″ | 5.00″ | 3.88″ | 2.88″ | .063″ | 2.56″ | .88″ | .62″ | .82″ | .62″ | 4 |
2″ | 2.50″ | 6.00″ | 4.75″ | 3.62″ | .063″ | 3.06″ | 1.00″ | .69″ | .94″ | .75″ | 4 |
2-1/2″ | 3.00″ | 7.00″ | 5.50″ | 4.12″ | .063″ | 3.56″ | 1.12″ | .82″ | 1.06″ | .75″ | 4 |
3″ | 3.63″ | 7.50″ | 6.00″ | 5.00″ | .063″ | 4.25″ | 1.19″ | .88″ | 1.13″ | .75″ | 4 |
3-1/2″ | 4.13″ | 8.50″ | 7.00″ | 5.50″ | .063″ | 4.81″ | 1.25″ | .88″ | 1.19″ | .75″ | 8 |
4″ | 4.63″ | 9.00″ | 7.50″ | 6.19″ | .063″ | 5.31″ | 1.31″ | .88″ | 1.25″ | .75″ | 8 |
5″ | 5.69″ | 10.00″ | 8.50″ | 7.31″ | .063″ | 6.44″ | 1.44″ | .88″ | 1.38″ | .88″ | 8 |
6″ | 6.75″ | 11.00″ | 9.50″ | 8.50″ | .063″ | 7.56″ | 1.56″ | .94″ | 1.50″ | .88″ | 8 |
8″ | 8.75″ | 13.50″ | 11.75″ | 10.62″ | .063″ | 9.69″ | 1.75″ | 1.06″ | 1.69″ | .88″ | 8 |
10″ | 10.88″ | 16.00″ | 14.25″ | 12.75″ | .063″ | 12.00″ | 1.94″ | 1.13″ | 1.88″ | 1.00″ | 12 |
12″ | 12.94″ | 19.00″ | 17.00″ | 15.00″ | .063″ | 14.38″ | 2.19″ | 1.19″ | 2.13″ | 1.00″ | 12 |
14″ | 14.19″ | 21.00″ | 18.75″ | 16.25″ | .063″ | 15.75″ | 2.25″ | 1.32″ | 2.19″ | 1.12″ | 12 |
16″ | 16.19″ | 23.50″ | 21.25″ | 18.50″ | .063″ | 18.00″ | 2.50″ | 1.38″ | 2.44″ | 1.12″ | 16 |
18″ | 18.19″ | 25.00″ | 22.75″ | 21.00″ | .063″ | 19.88″ | 2.69″ | 1.50″ | 2.63″ | 1.25″ | 16 |
20″ | 20.19″ | 27.50″ | 25.00″ | 23.00″ | .063″ | 22.00″ | 2.88″ | 1.63″ | 2.83″ | 1.25″ | 20 |
22″ | 22.19″ | 29.50″ | 27.25″ | 25.25″ | .063″ | 24.25″ | 3.13″ | 1.75″ | 3.07″ | 1.38″ | 20 |
24″ | 24.19″ | 32.00″ | 29.50″ | 27.25″ | .063″ | 26.12″ | 3.25″ | 1.82″ | 3.19″ | 1.38″ | 20 |