| NPS | Bolt Circle (mm) | Flange O.D. (mm) | Thickness (mm) | Bolt Hole Ø (mm) | No. Of Bolts |
|---|---|---|---|---|---|
| ½″ | 60.5 | 88.9 | 11.2 | 15.7 | 4 |
| ¾″ | 69.9 | 98.6 | 12.7 | 15.7 | 4 |
| 1″ | 79.2 | 108 | 14.2 | 15.7 | 4 |
| 1¼″ | 88.9 | 117.3 | 15.7 | 15.7 | 4 |
| 1½″ | 98.6 | 127 | 17.5 | 15.7 | 4 |
| 2″ | 120.7 | 152.4 | 19.1 | 19.1 | 4 |
| 2½″ | 139.7 | 177.8 | 22.4 | 19.1 | 4 |
| 3″ | 152.4 | 190.5 | 23.9 | 19.1 | 4 |
| 4″ | 190.5 | 228.6 | 23.9 | 19.1 | 8 |
| 5″ | 215.9 | 254 | 23.9 | 22.4 | 8 |
| 6″ | 241.3 | 279.4 | 25.4 | 22.4 | 8 |
| 8″ | 298.5 | 342.9 | 28.4 | 22.4 | 8 |
| 10″ | 362 | 406.4 | 30.2 | 25.4 | 12 |
| 12″ | 431.8 | 482.6 | 31.8 | 25.4 | 12 |
| 14″ | 476.3 | 533.4 | 35.1 | 28.4 | 12 |
| 16″ | 539.8 | 596.9 | 36.6 | 28.4 | 16 |
| 18″ | 577.9 | 635 | 39.6 | 31.8 | 16 |
| 20″ | 635 | 698.5 | 42.9 | 31.8 | 20 |
| 24″ | 749.3 | 812.8 | 47.8 | 35.1 | 20 |
| NPS | Class | Weight / Pc (kg) |
|---|---|---|
| ½″ | 150 | 2 |
| ¾″ | 150 | 2 |
| 1″ | 150 | 2 |
| 1¼″ | 150 | 3 |
| 1½″ | 150 | 4 |
| 2″ | 150 | 6 |
| 2½″ | 150 | 10 |
| 3″ | 150 | 11.5 |
| 3½″ | 150 | 12 |
| 4″ | 150 | 16.5 |
| 5″ | 150 | 21 |
| 6″ | 150 | 26 |
| 8″ | 150 | 42 |
| 10″ | 150 | 54 |
| 12″ | 150 | 88 |
| 14″ | 150 | 114 |
| 16″ | 150 | 140 |
| 18″ | 150 | 165 |
| 20″ | 150 | 197 |
| 22″ | 150 | 225 |
| 24″ | 150 | 268 |
Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.
Prime 304 stainless steel billet sourced and certified.
Heat to 1100°C – 1250°C for optimal forgeability.
Shape billet into flange geometry under controlled pressure.
Solution anneal at 1040°C – 1120°C, then quench.
CNC machining, drilling, and surface finishing.
Tensile, hardness, PMI, visual and impact tests performed.