| NPS | Bolt Circle (mm) | Flange O.D. (mm) | Thickness (mm) | Bolt Hole Ø (mm) | No. Of Bolts |
|---|---|---|---|---|---|
| 1″ | 79.2 | 108 | 14.2 | 15.7 | 4 |
| ½″ | 60.5 | 90 | 11.2 | 15.7 | 4 |
| 4″ | 190.5 | 229 | 22.4 | 19.1 | 8 |
| 2″ | 120.7 | 152 | 19.1 | 19.1 | 4 |
| 8″ | 298.5 | 343 | 25.4 | 22.4 | 8 |
| 6″ | 241.3 | 279 | 23.9 | 22.4 | 8 |
| 12″ | 431.8 | 483 | 31.8 | 25.4 | 12 |
| 10″ | 362.0 | 406 | 28.4 | 25.4 | 12 |
| NPS | Class | Weight / Pc (kg) |
|---|---|---|
| 1″ | 150 | 1.6 |
| ½″ | 150 | 0.9 |
| 4″ | 150 | 6.4 |
| 2″ | 150 | 3.0 |
| 8″ | 150 | 17.6 |
| 6″ | 150 | 10.8 |
| 12″ | 150 | 39.5 |
| 10″ | 150 | 27.9 |
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.