Socket-Weld Flanges
Ideal for smaller pipe diameters in low-temperature and low-pressure scenarios, socket-weld flanges feature a connection in which you place the pipe into the flange and then secure the connection with a single multi-pass fillet weld. This makes this style simpler to install than other welded flange types while avoiding the limitations associated with threaded ends.
- Size Range | 1/2″ – 36″ NPS (Larger sizes available upon request)
- Classes | ASME/ANSI 150, 300, 600, 900, 1500, 2500
- Stainless Steel Grades | 304, 304L, 316, 316L, 316L, 317L, 321 , 347 *
- Special Alloys | 2205, 254SMo, Monel, Inconel *
- Chrome Moly | P5, P9, P11, P22, P91 *
- Standards | ASTM / ASME / ANSI
SOCKET WELD CLASS 150 (IN INCH)
Dimensions of socket weld flange class 150 (in inches)
| NPS | ID | OD | Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | H | D | ID 2* | Raised Face Thickness (T) | T1 | Flat Face Thickness (T2) | Bolt Hole (B) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2″ | 0.88″ | 3.50″ | 2.38″ | 1.38″ | .063″ | 1.19″ | .38″ | 0.62″ | .62″ | .38″ | .56″ | .62″ | 4 |
| 3/4″ | 1.09″ | 3.88″ | 2.75″ | 1.69″ | .063″ | 1.50″ | .44″ | 0.82″ | .62″ | .44″ | .56″ | .62″ | 4 |
| 1″ | 1.36″ | 4.25″ | 3.12″ | 2.00″ | .063″ | 1.94″ | .50″ | 1.05″ | .69″ | .50″ | .63″ | .62″ | 4 |
| 1-1/4″ | 1.70″ | 4.62″ | 3.50″ | 2.50″ | .063″ | 2.31″ | .56″ | 1.38″ | .81″ | .56″ | .75″ | .62″ | 4 |
| 1-1/2″ | 1.97″ | 5.00″ | 3.88″ | 2.88″ | .063″ | 2.56″ | .62″ | 1.61″ | .88″ | .62″ | .82″ | .62″ | 4 |
| 2″ | 2.44″ | 6.00″ | 4.75″ | 3.62″ | .063″ | 3.06″ | .69″ | 2.07″ | 1.00″ | .69″ | .94″ | .75″ | 4 |
| 2-1/2″ | 2.94″ | 7.00″ | 5.50″ | 4.12″ | .063″ | 3.56″ | .75″ | 2.47″ | 1.12″ | .82″ | 1.06″ | .75″ | 4 |
| 3″ | 3.57″ | 7.50″ | 6.00″ | 5.00″ | .063″ | 4.25″ | .81″ | 3.07″ | 1.19″ | .88″ | 1.13″ | .75″ | 4 |
| 3-1/2″ | 4.07″ | 8.50″ | 7.00″ | 5.50″ | .063″ | 4.81″ | .88″ | 3.55″ | 1.25″ | .88″ | 1.19″ | .75″ | 8 |
| 4″ | 4.57″ | 9.00″ | 7.50″ | 6.19″ | .063″ | 5.31″ | .94″ | 4.03″ | 1.31″ | .88″ | 1.25″ | .75″ | 8 |
| 5″ | 5.66″ | 10.00″ | 8.50″ | 7.31″ | .063″ | 6.44″ | .94″ | 5.05″ | 1.44″ | .88″ | 1.38″ | .88″ | 8 |
| 6″ | 6.72″ | 11.00″ | 9.50″ | 8.50″ | .063″ | 7.56″ | 1.06″ | 6.07″ | 1.56″ | .94″ | 1.50″ | .88″ | 8 |
| 8″ | 8.72″ | 13.50″ | 11.75″ | 10.62″ | .063″ | 9.69″ | 1.25″ | 7.98″ | 1.75″ | 1.06″ | 1.69″ | .88″ | 8 |
| 10″ | 10.88″ | 16.00″ | 14.25″ | 12.75″ | .063″ | 12.00″ | 1.31″ | 10.02″ | 1.94″ | 1.13″ | 1.88″ | 1.00″ | 12 |
| 12″ | 12.88″ | 19.00″ | 17.00″ | 15.00″ | .063″ | 14.38″ | 1.56″ | 12.00″ | 2.19″ | 1.19″ | 2.13″ | 1.00″ | 12 |
| 14″ | 14.14″ | 21.00″ | 18.75″ | 16.25″ | .063″ | 15.75″ | 1.63″ | 13.25″ | 2.25″ | 1.32″ | 2.19″ | 1.12″ | 12 |
| 16″ | 16.16″ | 23.50″ | 21.25″ | 18.50″ | .063″ | 18.00″ | 1.75″ | 15.25″ | 2.50″ | 1.38″ | 2.44″ | 1.12″ | 16 |
| 18″ | 18.18″ | 25.00″ | 22.75″ | 21.00″ | .063″ | 19.88″ | 1.94″ | 17.25″ | 2.69″ | 1.50″ | 2.63″ | 1.25″ | 16 |
| 20″ | 20.20″ | 27.50″ | 25.00″ | 23.00″ | .063″ | 22.00″ | 2.13″ | 19.25″ | 2.88″ | 1.63″ | 2.83″ | 1.25″ | 20 |
| 22″ | 22.22″ | 29.50″ | 27.25″ | 25.25″ | .063″ | 24.25″ | 2.38″ | 21.25″ | 3.13″ | 1.75″ | 3.07″ | 1.38″ | 20 |
| 24″ | 24.25″ | 32.00″ | 29.50″ | 27.25″ | .063″ | 26.12″ | 2.50″ | 23.25″ | 3.25″ | 1.82″ | 3.19″ | 1.38″ | 20 |
SOCKET WELD CLASS 300 (IN INCH)
Dimensions of socket weld flange class 300 (in inches)
| FLANGE NPS | Inside Diameter | Outside Diameter | Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | H | D | ID 2* | Raised Face Thickness (T) | T1 | Flat Face Thickness (T2) | Bolt Hole (B) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2″ | 0.88″ | 3.75″ | 2.62″ | 1.38″ | .063″ | 1.50″ | .38″ | 0.62″ | 0.88″ | 0.50″ | 0.82″ | 0.62″ | 4 |
| 3/4″ | 1.09″ | 4.62″ | 3.25″ | 1.69″ | .063″ | 1.88″ | .44″ | 0.82″ | 1.00″ | .056″ | 0.94″ | 0.75″ | 4 |
| 1″ | 1.36″ | 4.88″ | 3.50″ | 2.00″ | .063″ | 2.12″ | .50″ | 1.05″ | 1.06″ | 0.63″ | 1.00″ | 0.75″ | 4 |
| 1-1/4″ | 1.70″ | 5.25″ | 3.88″ | 2.50″ | .063″ | 2.50″ | .56″ | 1.38″ | 1.06″ | 0.69″ | 1.00″ | 0.75″ | 4 |
| 1-1/2″ | 1.97″ | 6.12″ | 4.50″ | 2.88″ | .063″ | 2.75″ | .62″ | 1.61″ | 1.19″ | 0.75″ | 1.13″ | 0.88″ | 4 |
| 2″ | 2.44″ | 6.50″ | 5.00″ | 3.62″ | .063″ | 3.31″ | .69″ | 2.07″ | 1.31″ | 0.82″ | 1.25″ | 0.75″ | 8 |
| 2-1/2″ | 2.94″ | 7.50″ | 5.88″ | 4.12″ | .063″ | 3.94″ | .75″ | 2.47″ | 1.50″ | 0.94″ | 1.44″ | 0.88″ | 8 |
| 3″ | 3.57″ | 8.25″ | 6.62″ | 5.00″ | .063″ | 4.62″ | .81″ | 3.07″ | 1.69″ | 1.06″ | 1.63″ | 0.88″ | 8 |
SOCKET WELD CLASS 600 (IN INCH)
Dimensions of socket weld flanges class 600 (in inches)
| FLANGE NPS | ID | OD | Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | H | D | ID 2* | Raised Face Thickness (T) | T1 | Flat Face Thickness (T2) | Bolt Hole (B) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2″ | 0.88″ | 3.75″ | 2.62″ | 1.38″ | .250″ | 1.50″ | .38″ | 0.55″ | 1.13″ | 0.56″ | 0.88″ | 0.62″ | 4 |
| 3/4″ | 1.09″ | 4.62″ | 3.25″ | 1.69″ | .250″ | 1.88″ | .44″ | 0.74″ | 1.25″ | 0.62″ | 1.00″ | 0.75″ | 4 |
| 1″ | 1.36″ | 4.88″ | 3.50″ | 2.00″ | .250″ | 2.12″ | .50″ | 0.96″ | 1.31″ | 0.69″ | 1.06″ | 0.75″ | 4 |
| 1-1/4″ | 1.70″ | 5.25″ | 3.88″ | 2.50″ | .250″ | 2.50″ | .56″ | 1.28″ | 1.37″ | 0.81″ | 1.12″ | 0.75″ | 4 |
| 1-1/2″ | 1.97″ | 6.12″ | 4.50″ | 2.88″ | .250″ | 2.75″ | .62″ | 1.50″ | 1.50″ | 0.88″ | 1.25″ | 0.88″ | 4 |
| 2″ | 2.44″ | 6.50″ | 5.00″ | 3.62″ | .250″ | 3.31″ | .69″ | 1.94″ | 1.69″ | 1.00″ | 1.44″ | 0.75″ | 8 |
| 2-1/2″ | 2.94″ | 7.50″ | 5.88″ | 4.12″ | .250″ | 3.94″ | .75″ | 2.32″ | 1.87″ | 1.12″ | 1.62″ | 0.88″ | 8 |
| 3″ | 3.57″ | 8.25″ | 6.62″ | 5.00″ | .250″ | 4.62″ | .81″ | 2.90″ | 2.06″ | 1.25″ | 1.81″ | 0.88″ | 8 |
SOCKET WELD CLASS 1500 (IN INCH)
Dimensions of socket weld flange class 1500 (in inches)
| FLANGE NPS | Inside Diameter | Outside Diameter | Bolt Circle (BC) | Raised Face (R) | Raised Face (RF) | H | D | ID 2* | Raised Face Thickness (T) | T1 | Flat Face Thickness (T2) | Bolt Hole (B) | No. of Bolt Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2″ | 0.88″ | 4.75″ | 3.25″ | 1.38″ | .250″ | 1.50″ | .38″ | 0.55″ | 1.50″ | 0.88″ | 1.25″ | 0.88″ | 4 |
| 3/4″ | 1.09″ | 5.13″ | 3.50″ | 1.69″ | .250″ | 1.75″ | .44″ | 0.74″ | 1.63″ | 1.00″ | 1.38″ | 0.88″ | 4 |
| 1″ | 1.36″ | 5.88″ | 4.00″ | 2.00″ | .250″ | 2.06″ | .50″ | 0.96″ | 1.88″ | 1.13″ | 1.63″ | 1.00″ | 4 |
| 1-1/4″ | 1.70″ | 6.25″ | 4.38″ | 2.50″ | .250″ | 2.50″ | .56″ | 1.28″ | 1.88″ | 1.13″ | 1.63″ | 1.00″ | 4 |
| 1-1/2″ | 1.97″ | 7.00″ | 4.88″ | 2.88″ | .250″ | 2.75″ | .62″ | 1.50″ | 2.00″ | 1.25″ | 1.75″ | 1.13″ | 4 |
| 2″ | 2.44″ | 8.50″ | 6.50″ | 3.63″ | .250″ | 4.13″ | .69″ | 1.94″ | 2.50″ | 1.50″ | 2.25″ | 1.00″ | 8 |
| 2-1/2″ | 2.94″ | 9.63″ | 7.50″ | 4.13″ | .250″ | 4.88″ | .75″ | 2.32″ | 2.75″ | 1.63″ | 2.50″ | 1.13″ | 8 |
