| Nominal Size (NPS) | Outside Diameter (mm) | Bolt Hole Diameter (mm) | No. of Bolt Holes | Flange Thickness (mm) | Face to Face (mm) |
|---|---|---|---|---|---|
| ½″ | 73.15 | 14.22 | 4 | 19.05 | 25.40 |
| ¾″ | 88.90 | 14.22 | 4 | 20.57 | 28.70 |
| 1″ | 101.60 | 16.00 | 4 | 22.35 | 31.75 |
| 1½″ | 127.00 | 19.05 | 4 | 25.40 | 38.10 |
| 2″ | 139.70 | 19.05 | 4 | 26.92 | 44.45 |
| 3″ | 190.50 | 23.88 | 4 | 31.75 | 57.15 |
| 4″ | 215.90 | 26.92 | 8 | 35.05 | 63.50 |
| 6″ | 266.70 | 28.45 | 8 | 38.10 | 76.20 |
| 8″ | 317.50 | 31.75 | 8 | 44.45 | 88.90 |
| 10″ | 355.60 | 35.05 | 8 | 50.80 | 101.60 |
| 12″ | 406.40 | 38.10 | 12 | 57.15 | 114.30 |
| Nominal Size (NPS) | Flange Class | Weight (kg) |
|---|---|---|
| ½″ | Class 150 | 0.68 |
| ¾″ | Class 150 | 0.91 |
| 1″ | Class 150 | 1.36 |
| 1½″ | Class 150 | 2.27 |
| 2″ | Class 150 | 3.18 |
| 3″ | Class 150 | 5.44 |
| 4″ | Class 150 | 7.27 |
| 6″ | Class 150 | 12.70 |
| 8″ | Class 150 | 20.41 |
| 10″ | Class 150 | 29.48 |
| 12″ | Class 150 | 43.18 |
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.