| NPS | Bolt Circle (mm) | Flange O.D. (mm) | Thickness (mm) | Bolt Hole Ø (mm) | No. Of Bolts |
|---|---|---|---|---|---|
| ½″ | 60.3 | 90 | 11.2 | 12.7 | 4 |
| 1″ | 79.4 | 110 | 12.7 | 15.9 | 4 |
| 2″ | 120.7 | 150 | 15.9 | 19.1 | 4 |
| 3″ | 152.4 | 190 | 19.1 | 19.1 | 4 |
| 4″ | 190.5 | 230 | 23.9 | 19.1 | 8 |
| 6″ | 241.3 | 280 | 25.4 | 22.2 | 8 |
| 8″ | 298.4 | 345 | 28.6 | 22.2 | 8 |
| 10″ | 362.0 | 405 | 30.2 | 25.4 | 12 |
| 12″ | 431.8 | 485 | 33.3 | 25.4 | 12 |
| NPS | Outer Diameter (mm) | Thickness (mm) | Weight / Pc (kg) |
|---|---|---|---|
| ½″ | 90 | 11.2 | 0.8 |
| 1″ | 110 | 12.7 | 1.5 |
| 2″ | 150 | 15.9 | 3.2 |
| 3″ | 190 | 19.1 | 5.8 |
| 4″ | 230 | 23.9 | 10.0 |
| 6″ | 280 | 25.4 | 15.8 |
| 8″ | 345 | 28.6 | 25.6 |
| 10″ | 405 | 30.2 | 38.4 |
| 12″ | 485 | 33.3 | 56.2 |
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.