Flange Dimensions for 150#
| Nominal Pipe Size (NPS) | Outside Diameter (O.D.) | Bolt Circle Diameter | Number of Bolts | Bolt Diameter | Flange Thickness (T) |
|---|---|---|---|---|---|
| ½" | 3.5" | 2.38" | 4 | 0.5" | 0.38" |
| ¾" | 3.88" | 2.75" | 4 | 0.5" | 0.44" |
| 1" | 4.25" | 3.12" | 4 | 0.5" | 0.5" |
| 1.5" | 5" | 3.88" | 4 | 0.5" | 0.56" |
| 2" | 6" | 4.75" | 4 | 0.62" | 0.62" |
| 3" | 7.5" | 6" | 4 | 0.62" | 0.69" |
| 4" | 9" | 7.5" | 8 | 0.62" | 0.75" |
| 6" | 11" | 9.5" | 8 | 0.75" | 0.88" |
| 8" | 13.5" | 11.75" | 8 | 0.75" | 0.94" |
Flange Dimensions for 300#
| Nominal Pipe Size (NPS) | Outside Diameter (O.D.) | Bolt Circle Diameter | Number of Bolts | Bolt Diameter | Flange Thickness (T) |
|---|---|---|---|---|---|
| ½" | 3.88" | 2.75" | 4 | 0.62" | 0.62" |
| ¾" | 4.25" | 3.12" | 4 | 0.62" | 0.69" |
| 1" | 4.62" | 3.5" | 4 | 0.62" | 0.75" |
| 1.5" | 5.5" | 4.5" | 4 | 0.75" | 0.88" |
| 2" | 6.5" | 5" | 8 | 0.75" | 0.94" |
| 3" | 8.25" | 6.62" | 8 | 0.75" | 1.06" |
| 4" | 10" | 7.88" | 8 | 0.88" | 1.12" |
| 6" | 12.5" | 10.62" | 12 | 0.88" | 1.38" |
| 8" | 15" | 13" | 12 | 1" | 1.5" |
Flange Dimensions for 600#
| Nominal Pipe Size (NPS) | Outside Diameter (O.D.) | Bolt Circle Diameter | Number of Bolts | Bolt Diameter | Flange Thickness (T) |
|---|---|---|---|---|---|
| ½" | 4" | 2.75" | 4 | 0.62" | 0.81" |
| ¾" | 4.62" | 3.12" | 4 | 0.62" | 0.88" |
| 1" | 5" | 3.5" | 4 | 0.62" | 0.94" |
| 1.5" | 6.5" | 4.75" | 4 | 0.75" | 1.12" |
| 2" | 7.5" | 5.88" | 8 | 0.88" | 1.25" |
| 3" | 9.62" | 7.62" | 8 | 0.88" | 1.44" |
| 4" | 12" | 9.5" | 8 | 1" | 1.62" |
| 6" | 15" | 12.5" | 12 | 1" | 2" |
| 8" | 18.5" | 15" | 12 | 1.12" | 2.19" |
Flange Dimensions for 900#
| Nominal Pipe Size (NPS) | Outside Diameter (O.D.) | Bolt Circle Diameter | Number of Bolts | Bolt Diameter | Flange Thickness (T) |
|---|---|---|---|---|---|
| ½" | 5" | 3.5" | 4 | 0.62" | 0.94" |
| ¾" | 5.5" | 4" | 4 | 0.75" | 1.06" |
| 1" | 6" | 4.38" | 4 | 0.75" | 1.12" |
| 1.5" | 7.5" | 5.5" | 4 | 0.88" | 1.38" |
| 2" | 9" | 6.88" | 8 | 0.88" | 1.62" |
| 3" | 12" | 8.88" | 8 | 1" | 2" |
| 4" | 15" | 11" | 8 | 1.12" | 2.31" |
| 6" | 20" | 15.25" | 12 | 1.25" | 2.88" |
| 8" | 25" | 19" | 12 | 1.38" | 3.5" |