| NPS | Bolt Circle (mm) | Flange O.D. (mm) | Thickness (mm) | Bolt Hole Ø (mm) | No. Of Bolts |
|---|---|---|---|---|---|
| ½″ | 57.15 | 73.03 | 12.70 | 14.30 | 4 |
| 1″ | 88.90 | 101.60 | 19.05 | 19.05 | 4 |
| 2″ | 101.60 | 127.00 | 25.40 | 25.40 | 4 |
| 4″ | 152.40 | 177.80 | 31.75 | 31.75 | 8 |
| 6″ | 177.80 | 228.60 | 38.10 | 38.10 | 8 |
| 8″ | 228.60 | 279.40 | 44.45 | 44.45 | 8 |
| 10″ | 279.40 | 330.20 | 50.80 | 50.80 | 12 |
| 12″ | 330.20 | 381.00 | 57.15 | 57.15 | 12 |
| NPS | Class | Weight / Pc (kg) |
|---|---|---|
| ½″ | 150 | As Per Specification |
| 1″ | 150 | As Per Specification |
| 2″ | 150 | As Per Specification |
| 4″ | 150 | As Per Specification |
| 6″ | 150 | As Per Specification |
| 8″ | 150 | As Per Specification |
| 10″ | 150 | As Per Specification |
| 12″ | 150 | As Per Specification |
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.