| NPS | Bolt Circle (mm) | Flange O.D. (mm) | Thickness (mm) | Bolt Hole Ø (mm) | No. Of Bolts |
|---|---|---|---|---|---|
| ½″ | 60.3 | 90 | 12.7 | 12 | 4 |
| 1″ | 88.9 | 125 | 14.3 | 16 | 4 |
| 2″ | 127 | 165 | 15.9 | 16 | 4 |
| 4″ | 254 | 310 | 23.9 | 20 | 8 |
| 6″ | 317.5 | 405 | 28.6 | 24 | 12 |
| 8″ | 381 | 520 | 31.8 | 24 | 12 |
| 10″ | 508 | 635 | 38.1 | 27 | 16 |
| 12″ | 635 | 762 | 44.5 | 30 | 16 |
| NPS | Flange Type | Weight / Pc (kg) |
|---|---|---|
| ½″ | Weld Neck | 2 |
| ¾″ | Weld Neck | 2 |
| 1″ | Weld Neck | 3 |
| 1¼″ | Weld Neck | 3 |
| 1½″ | Weld Neck | 4 |
| 2″ | Weld Neck | 6 |
| 2½″ | Weld Neck | 10 |
| 3″ | Weld Neck | 11.5 |
| 3½″ | Weld Neck | 12 |
| 4″ | Weld Neck | 16.5 |
| 5″ | Weld Neck | 21 |
| 6″ | Weld Neck | 26 |
| 8″ | Weld Neck | 42 |
| 10″ | Weld Neck | 54 |
| 12″ | Weld Neck | 88 |
| 14″ | Weld Neck | 114 |
| 16″ | Weld Neck | 140 |
| 18″ | Weld Neck | 165 |
| 20″ | Weld Neck | 197 |
| 22″ | Weld Neck | 225 |
| 24″ | Weld Neck | 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.