Forged Flanges Manufacturer India
Stainless Steel Forged Flange Dimensions Chart And Standard Specification Of ASME B16.5 Forged Flanges.
ASME B16.5 Forged Flange
Stainless Steel Forged Flanges
Carbon Steel Forged Flanges
What Does Forged Flange Mean?
There are cast flanges and forged flanges in the market. Typical Stainless Steel Forged Flanges manufacturer India such as Rajtilak Metal produce forged flanges of all types. Forged flanges last long, perform well and have high precision over the cast flanges. Forged Flanges to ANSI B 16.5 belong to a group of flanges that are less than 24 inches in diameter. Flat Faced Forged Flanges are used in locations where the gasket is bolted together with the flanges. Custom Flanges are the low pressure class flanges that are applied in low pressure applications.
ASTM A105 Forged Steel Flanges
Forged Nozzle Flange
Forged Vessel Flange
Table of contents
- The Purpose Of Forged Flanges?
- Forged Steel Flanges Dimensions
- Class 150 Forged Flanges Dimensions
- Class 300 Forged Flanges Dimensions
- Class 400 Forged Flanges Dimensions
- Class 600 Forged Flanges Dimensions
- Class 900 Forged Flanges Dimensions
- Class 1500 Forged Flanges Dimensions
- Class 2500 Forged Flanges Dimensions
Forged Flange Class 150 To 2500 Dimensions
The Purpose Of Forged Flanges?
The ANSI B16.5 Forged Flanges range from NPS ½ to NPS 24. Depending on the pressure classes, the Forged Flanges could be used in high pressure and high temperature applications as well. The difference in the material also constitutes to the capacity. The SS Forged Flange is made out of the standard A182 stainless steel whereas the Forged Plate Flanges are made from alloys. The bigger diameter flanges such as ASME B16.47 Series A and B Forged Flanges can also be used depending on the diameter of the pipes used in an application.
Forged Steel Flanges Dimensions
Class 150 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | TJ | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B2b | B3 | H | L | L2 | L3c | R | D | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 3.50 | 0.38 | 0.44 | 1.38 | 1.19 | 4-0.62 | 2.38 | 0.88 | 0.62 | 0.90 | 0.84 | 0.56 | 1.81 | 0.62 | 0.12 | 0.38 | 0.62 |
| ¾ | 3.88 | 0.44 | 0.50 | 1.69 | 1.50 | 4-0.62 | 2.75 | 1.09 | 0.82 | 1.11 | 1.05 | 0.56 | 2.00 | 0.62 | 0.12 | 0.44 | 0.62 |
| 1 | 4.25 | 0.50 | 0.56 | 2.00 | 1.94 | 4-0.62 | 3.12 | 1.36 | 1.05 | 1.38 | 1.32 | 0.62 | 2.12 | 0.69 | 0.12 | 0.50 | 0.69 |
| 1¼ | 4.62 | 0.56 | 0.62 | 2.50 | 2.31 | 4-0.62 | 3.50 | 1.70 | 1.38 | 1.72 | 1.66 | 0.75 | 2.19 | 0.81 | 0.19 | 0.56 | 0.81 |
| 1½ | 5.00 | 0.62 | 0.69 | 2.88 | 2.56 | 4-0.62 | 3.88 | 1.95 | 1.61 | 1.97 | 1.90 | 0.81 | 2.38 | 0.88 | 0.25 | 0.62 | 0.88 |
| 2 | 6.00 | 0.69 | 0.75 | 3.62 | 3.06 | 4-0.75 | 4.75 | 2.44 | 2.07 | 2.46 | 2.38 | 0.94 | 2.44 | 1.00 | 0.31 | 0.69 | 1.00 |
| 2½ | 7.00 | 0.81 | 0.88 | 4.12 | 3.56 | 4-0.75 | 5.50 | 2.94 | 2.47 | 2.97 | 2.88 | 1.06 | 2.69 | 1.12 | 0.31 | 0.75 | 1.12 |
| 3 | 7.50 | 0.88 | 0.94 | 5.00 | 4.25 | 4-0.75 | 6.00 | 3.57 | 3.07 | 3.60 | 3.50 | 1.12 | 2.69 | 1.19 | 0.38 | 0.81 | 1.19 |
| 3½ | 8.50 | 0.88 | 0.94 | 5.50 | 4.81 | 8-0.75 | 7.00 | 4.07 | 3.55 | 4.10 | 4.00 | 1.19 | 2.75 | 1.25 | 0.38 | 0.88 | 1.25 |
| 4 | 9.00 | 0.88 | 0.94 | 6.19 | 5.31 | 8-0.75 | 7.50 | 4.57 | 4.03 | 4.60 | 4.50 | 1.25 | 2.94 | 1.31 | 0.44 | 0.94 | 1.31 |
| 5 | 10.00 | 0.88 | 0.94 | 7.31 | 6.44 | 8-0.88 | 8.50 | 5.66 | 5.05 | 5.69 | 5.56 | 1.38 | 3.44 | 1.44 | 0.44 | 0.94 | 1.44 |
| 6 | 11.00 | 0.94 | 1.00 | 8.50 | 7.56 | 8-0.88 | 9.50 | 6.72 | 6.07 | 6.75 | 6.63 | 1.50 | 3.44 | 1.56 | 0.50 | 1.06 | 1.56 |
| 8 | 13.50 | 1.06 | 1.12 | 10.62 | 9.69 | 8-0.88 | 11.75 | 8.72 | 7.98 | 8.75 | 8.63 | 1.69 | 3.94 | 1.75 | 0.50 | 1.25 | 1.75 |
| 10 | 16.00 | 1.12 | 1.19 | 12.75 | 12.00 | 12-1.00 | 14.25 | 10.88 | 10.02 | 10.92 | 10.75 | 1.88 | 3.94 | 1.94 | 0.50 | 1.31 | 1.94 |
| 12 | 19.00 | 1.19 | 1.25 | 15.00 | 14.38 | 12-1.00 | 17.00 | 12.88 | 12.00 | 12.92 | 12.75 | 2.12 | 4.44 | 2.19 | 0.50 | 1.56 | 2.19 |
| 14 | 21.00 | 1.31 | 1.38 | 16.25 | 15.75 | 12-1.12 | 18.75 | 14.14 | 13.25 | 14.18 | 14.00 | 2.19 | 4.94 | 3.12 | 0.50 | 1.63 | 2.25 |
| 16 | 23.50 | 1.38 | 1.44 | 18.50 | 18.00 | 16-1.12 | 21.25 | 16.16 | 15.25 | 16.19 | 16.00 | 2.44 | 4.94 | 3.44 | 0.50 | 1.75 | 2.50 |
| 18 | 25.00 | 1.50 | 1.56 | 21.00 | 19.88 | 16-1.25 | 22.75 | 18.18 | 17.25 | 18.20 | 18.00 | 2.62 | 5.44 | 3.81 | 0.50 | 1.94 | 2.69 |
| 20 | 27.50 | 1.62 | 1.69 | 23.00 | 22.00 | 20-1.25 | 25.00 | 20.20 | 19.25 | 20.25 | 20.00 | 2.81 | 5.62 | 4.06 | 0.50 | 2.13 | 2.88 |
| 22 | 29.50 | 1.75 | 1.81 | 25.25 | 24.25 | 20-1.38 | 27.25 | 22.22 | 21.25 | 22.25 | 22.00 | 3.07 | 5.82 | 4.25 | 0.50 | 2.38 | 3.13 |
| 24 | 32.00 | 1.81 | 1.88 | 27.25 | 26.12 | 20-1.38 | 29.50 | 24.25 | 23.25 | 24.25 | 24.00 | 3.19 | 5.94 | 4.38 | 0.50 | 2.50 | 3.25 |
Class 300 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | TJ | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B2b | B3 | H | L | L2 | L3c | R | C | D | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 3.75 | 0.50 | 0.56 | 1.38 | 1.50 | 4-0.63 | 2.62 | 0.88 | 0.62 | 0.90 | 0.84 | 0.81 | 2.00 | 0.88 | 0.12 | 0.93 | 0.38 | 0.62 |
| ¾ | 4.62 | 0.56 | 0.62 | 1.69 | 1.88 | 4-0.75 | 3.25 | 1.09 | 0.82 | 1.11 | 1.05 | 0.94 | 2.19 | 1.00 | 0.12 | 1.14 | 0.44 | 0.62 |
| 1 | 4.88 | 0.62 | 0.69 | 2.00 | 2.12 | 4-0.75 | 3.50 | 1.36 | 1.05 | 1.38 | 1.32 | 1.00 | 2.38 | 1.06 | 0.12 | 1.41 | 0.50 | 0.69 |
| 1¼ | 5.25 | 0.69 | 0.75 | 2.50 | 2.50 | 4-0.75 | 3.88 | 1.70 | 1.38 | 1.72 | 1.66 | 1.00 | 2.50 | 1.06 | 0.19 | 1.75 | 0.56 | 0.81 |
| 1½ | 6.12 | 0.75 | 0.81 | 2.88 | 2.75 | 4-0.88 | 4.50 | 1.95 | 1.61 | 1.97 | 1.90 | 1.13 | 2.63 | 1.19 | 0.25 | 1.98 | 0.62 | 0.88 |
| 2 | 6.50 | 0.81 | 0.88 | 3.62 | 3.31 | 8-0.75 | 5.00 | 2.44 | 2.07 | 2.46 | 2.38 | 1.25 | 2.69 | 1.31 | 0.31 | 2.50 | 0.69 | 1.12 |
| 2½ | 7.50 | 0.94 | 1.00 | 4.12 | 3.94 | 8-0.88 | 5.88 | 2.94 | 2.47 | 2.97 | 2.88 | 1.44 | 2.94 | 1.50 | 0.31 | 3.00 | 0.75 | 1.25 |
| 3 | 8.25 | 1.06 | 1.12 | 5.00 | 4.62 | 8-0.88 | 6.62 | 3.57 | 3.07 | 3.60 | 3.50 | 1.63 | 3.06 | 1.69 | 0.38 | 3.63 | 0.81 | 1.25 |
| 3½ | 9.00 | 1.12 | 1.19 | 5.50 | 5.25 | 8-0.88 | 7.25 | 4.07 | 3.55 | 4.10 | 4.00 | 1.69 | 3.13 | 1.75 | 0.38 | 4.13 | 1.44 | |
| 4 | 10.00 | 1.19 | 1.25 | 6.19 | 5.75 | 8-0.88 | 7.88 | 4.57 | 4.03 | 4.60 | 4.50 | 1.82 | 3.32 | 1.88 | 0.44 | 4.63 | 1.44 | |
| 5 | 11.00 | 1.31 | 1.38 | 7.31 | 7.00 | 8-0.88 | 9.25 | 5.66 | 5.05 | 5.69 | 5.56 | 1.94 | 3.82 | 2.00 | 0.44 | 5.69 | 1.69 | |
| 6 | 12.50 | 1.38 | 1.44 | 8.50 | 8.12 | 12-0.88 | 10.62 | 6.72 | 6.07 | 6.75 | 6.63 | 2.00 | 3.82 | 2.06 | 0.50 | 6.75 | 1.81 | |
| 8 | 15.00 | 1.56 | 1.62 | 10.62 | 10.25 | 12-1.00 | 13.00 | 8.72 | 7.98 | 8.75 | 8.63 | 2.38 | 4.32 | 2.44 | 0.50 | 8.75 | 2.00 | |
| 10 | 17.50 | 1.81 | 1.88 | 12.75 | 12.62 | 16-1.12 | 15.25 | 10.88 | 10.02 | 10.92 | 10.75 | 2.56 | 4.56 | 3.75 | 0.50 | 10.88 | 2.19 | |
| 12 | 20.50 | 1.94 | 2.00 | 15.00 | 14.75 | 16-1.25 | 17.75 | 12.88 | 12.00 | 12.92 | 12.75 | 2.82 | 5.06 | 4.00 | 0.50 | 12.94 | 2.38 | |
| 14 | 23.00 | 2.06 | 2.12 | 16.25 | 16.75 | 20-1.25 | 20.25 | 14.14 | 13.25 | 14.18 | 14.00 | 2.94 | 5.56 | 4.38 | 0.50 | 14.19 | 2.50 | |
| 16 | 25.50 | 2.19 | 2.25 | 18.50 | 19.00 | 20-1.38 | 22.50 | 16.16 | 15.25 | 16.19 | 16.00 | 3.19 | 5.69 | 4.75 | 0.50 | 16.19 | 2.69 | |
| 18 | 28.00 | 2.31 | 2.38 | 21.00 | 21.00 | 24-1.38 | 24.75 | 18.18 | 17.25 | 18.20 | 18.00 | 3.44 | 6.19 | 5.12 | 0.50 | 18.19 | 2.75 | |
| 20 | 30.50 | 2.44 | 2.50 | 23.00 | 23.12 | 24-1.38 | 27.00 | 20.20 | 19.25 | 20.25 | 20.00 | 3.69 | 6.32 | 5.50 | 0.50 | 20.19 | 2.88 | |
| 22 | 33.00 | 2.57 | 2.63 | 25.25 | 25.25 | 24-1.63 | 29.25 | 22.22 | 21.25 | 22.25 | 22.00 | 3.93 | 6.43 | 5.75 | 0.50 | 22.19 | 3.13 | |
| 24 | 36.00 | 2.69 | 2.75 | 27.25 | 27.62 | 24-1.63 | 32.00 | 24.25 | 23.25 | 24.25 | 24.00 | 4.13 | 6.56 | 6.00 | 0.50 | 24.19 | 3.25 |
Class 400 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B3 | H | L | L2 | L3c | r | C | D | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 3.75 | 0.56 | 1.38 | 1.5 | 4-0.63 | 2.62 | 0.88 | 0.9 | 0.84 | 0.88 | 2.06 | 0.88 | 0.12 | 0.93 | 0.38 | 0.62 |
| ¾ | 4.62 | 0.62 | 1.69 | 1.88 | 4-0.75 | 3.25 | 1.09 | 1.11 | 1.05 | 1 | 2.25 | 1 | 0.12 | 1.14 | 0.44 | 0.62 |
| 1 | 4.88 | 0.69 | 2 | 2.12 | 4-.075 | 3.5 | 1.36 | 1.38 | 1.32 | 1.06 | 2.44 | 1.06 | 0.12 | 1.41 | 0.5 | 0.69 |
| 1¼ | 5.25 | 0.81 | 2.5 | 2.5 | 4-0.75 | 3.88 | 1.7 | 1.72 | 1.66 | 1.12 | 2.62 | 1.12 | 0.19 | 1.75 | 0.56 | 0.81 |
| 1½ | 6.12 | 0.88 | 2.88 | 2.75 | 4-0.88 | 4.5 | 1.95 | 1.97 | 1.9 | 1.25 | 2.75 | 1.25 | 0.25 | 1.99 | 0.62 | 0.88 |
| 2 | 6.5 | 1 | 3.62 | 3.31 | 8-0.75 | 5 | 2.44 | 2.46 | 2.38 | 1.44 | 2.88 | 1.44 | 0.31 | 2.5 | 0.69 | 1.12 |
| 2½ | 7.5 | 1.12 | 4.12 | 3.94 | 8-0.88 | 5.88 | 2.94 | 2.97 | 2.88 | 1.62 | 3.12 | 1.62 | 0.31 | 3 | 0.75 | 1.25 |
| 3 | 8.25 | 1.25 | 5 | 4.62 | 8-0.88 | 6.62 | 3.57 | 3.6 | 3.5 | 1.81 | 3.25 | 1.81 | 0.38 | 3.63 | 0.81 | 1.38 |
| 3½ | 9 | 1.38 | 5.5 | 5.25 | 8-1.00 | 7.25 | 4.07 | 4.1 | 4 | 1.94 | 3.38 | 1.94 | 0.38 | 4.13 | 1.56 | |
| 4 | 10 | 1.38 | 6.19 | 5.75 | 8-1.00 | 7.88 | 4.57 | 4.6 | 4.5 | 2 | 3.5 | 2 | 0.44 | 4.63 | 1.44 | |
| 5 | 11 | 1.5 | 7.31 | 7 | 8-1.00 | 9.25 | 5.66 | 5.69 | 5.56 | 2.12 | 4 | 2.12 | 0.44 | 5.69 | 1.69 | |
| 6 | 12.5 | 1.62 | 8.5 | 8.12 | 12-1.00 | 10.62 | 6.72 | 6.75 | 6.63 | 2.25 | 4.06 | 2.25 | 0.5 | 6.75 | 1.81 | |
| 8 | 15 | 1.88 | 10.62 | 10.25 | 12-1.12 | 13 | 8.72 | 8.75 | 8.63 | 2.69 | 4.62 | 2.69 | 0.5 | 8.75 | 2 | |
| 10 | 17.5 | 2.12 | 12.75 | 12.62 | 16-1.25 | 15.25 | 10.88 | 10.92 | 10.75 | 2.88 | 4.88 | 4 | 0.5 | 10.88 | 2.19 | |
| 12 | 20.5 | 2.25 | 15 | 14.75 | 16-1.38 | 17.75 | 12.88 | 12.92 | 12.75 | 3.12 | 5.38 | 4.25 | 0.5 | 12.94 | 2.38 | |
| 14 | 23 | 2.38 | 16.25 | 16.75 | 20-1.38 | 20.25 | 14.14 | 14.18 | 14 | 3.31 | 5.88 | 4.62 | 0.5 | 14.19 | 2.5 | |
| 16 | 25.5 | 2.5 | 18.5 | 19 | 20-1.50 | 22.5 | 16.16 | 16.19 | 16 | 3.69 | 6 | 5 | 0.5 | 16.19 | 2.69 | |
| 18 | 28 | 2.62 | 21 | 21 | 24-1.50 | 24.75 | 18.18 | 18.2 | 18 | 3.88 | 6.5 | 5.38 | 0.5 | 18.19 | 2.75 | |
| 20 | 30.5 | 2.75 | 23 | 23.12 | 24-1.62 | 27 | 20.2 | 20.25 | 20 | 4 | 6.62 | 5.75 | 0.5 | 20.19 | 2.88 | |
| 22 | 33 | 2.88 | 25.25 | 25.25 | 24-1.75 | 29.25 | 22.22 | 22.25 | 22 | 4.25 | 6.75 | 6 | 0.5 | -- | ||
| 24 | 36 | 3 | 27.25 | 27.62 | 24-1.88 | 32 | 24.25 | 24.25 | 24 | 4.5 | 6.88 | 6.25 | 0.5 | 24.19 | 3.25 |
Class 600 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B3 | H | L | L2 | L3c | r | C | D | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 3.75 | 0.56 | 1.38 | 1.5 | 4-0.63 | 2.62 | 0.88 | 0.9 | 0.84 | 0.88 | 2.06 | 0.88 | 0.12 | 0.93 | 0.38 | 0.62 |
| ¾ | 4.62 | 0.62 | 1.69 | 1.88 | 4-0.75 | 3.25 | 1.09 | 1.11 | 1.05 | 1 | 2.25 | 1 | 0.12 | 1.14 | 0.44 | 0.62 |
| 1 | 4.88 | 0.69 | 2 | 2.12 | 4-0.75 | 3.5 | 1.36 | 1.38 | 1.32 | 1.06 | 2.44 | 1.06 | 0.12 | 1.41 | 0.5 | 0.69 |
| 1¼ | 5.25 | 0.81 | 2.5 | 2.5 | 4-0.75 | 3.88 | 1.7 | 1.72 | 1.66 | 1.12 | 2.62 | 1.12 | 0.19 | 1.75 | 0.56 | 0.81 |
| 1½ | 6.12 | 0.88 | 2.88 | 2.75 | 4-0.88 | 4.5 | 1.95 | 1.97 | 1.9 | 1.25 | 2.75 | 1.25 | 0.25 | 1.99 | 0.62 | 0.88 |
| 2 | 6.5 | 1 | 3.62 | 3.31 | 8-0.75 | 5 | 2.44 | 2.46 | 2.38 | 1.44 | 2.88 | 1.44 | 0.31 | 2.5 | 0.69 | 1.12 |
| 2½ | 7.5 | 1.12 | 4.12 | 3.94 | 8-0.88 | 5.88 | 2.94 | 2.97 | 2.88 | 1.62 | 3.12 | 1.62 | 0.31 | 3 | 0.75 | 1.25 |
| 3 | 8.25 | 1.25 | 5 | 4.62 | 8-0.88 | 6.62 | 3.57 | 3.6 | 3.5 | 1.81 | 3.25 | 1.81 | 0.38 | 3.63 | 0.81 | 1.38 |
| 3½ | 9 | 1.38 | 5.5 | 5.25 | 8-1.00 | 7.25 | 4.07 | 4.1 | 4 | 1.94 | 3.38 | 1.94 | 0.38 | 4.13 | 1.56 | |
| 4 | 10.75 | 1.5 | 6.19 | 6 | 8-1.00 | 8.5 | 4.57 | 4.6 | 4.5 | 2.12 | 4 | 2.12 | 0.44 | 4.63 | 1.62 | |
| 5 | 13 | 1.75 | 7.31 | 7.44 | 8-1.12 | 10.5 | 5.66 | 5.69 | 5.56 | 2.38 | 4.5 | 2.38 | 0.44 | 5.69 | 1.88 | |
| 6 | 14 | 1.88 | 8.5 | 8.75 | 12-1.12 | 11.5 | 6.72 | 6.75 | 6.63 | 2.62 | 4.62 | 2.62 | 0.5 | 6.75 | 2 | |
| 8 | 16.5 | 2.19 | 10.62 | 10.75 | 12-1.25 | 13.75 | 8.72 | 8.75 | 8.63 | 3 | 5.25 | 3 | 0.5 | 8.75 | 2.25 | |
| 10 | 20 | 2.5 | 12.75 | 13.5 | 16-1.38 | 17 | 10.88 | 10.92 | 10.75 | 3.38 | 6 | 4.38 | 0.5 | 10.88 | 2.56 | |
| 12 | 22 | 2.62 | 15 | 15.75 | 20-1.38 | 19.25 | 12.88 | 12.92 | 12.75 | 3.62 | 6.12 | 4.62 | 0.5 | 12.94 | 2.75 | |
| 14 | 23.75 | 2.75 | 16.25 | 17 | 20-1.50 | 20.75 | 14.14 | 14.18 | 14 | 3.69 | 6.5 | 5 | 0.5 | 14.19 | 2.88 | |
| 16 | 27 | 3 | 18.5 | 19.5 | 20-1.63 | 23.75 | 16.16 | 16.19 | 16 | 4.19 | 7 | 5.5 | 0.5 | 16.19 | 3.06 | |
| 18 | 29.25 | 3.25 | 21 | 21.5 | 20-1.75 | 25.75 | 18.18 | 18.2 | 18 | 4.62 | 7.25 | 6 | 0.5 | 18.19 | 3.12 | |
| 20 | 32 | 3.5 | 23 | 24 | 24-1.75 | 28.5 | 20.2 | 20.25 | 20 | 5 | 7.5 | 6.5 | 0.5 | 20.19 | 3.25 | |
| 22 | 34.25 | 3.75 | 25.25 | 26.25 | 24-1.75 | 30.63 | 22.22 | 22.25 | 22 | 5.25 | 7.75 | 6.88 | 0.5 | -- | ||
| 24 | 37 | 4 | 27.25 | 28.25 | 24-2.00 | 33 | 24.25 | 24.25 | 24 | 5.5 | 8 | 7.25 | 0.5 | 24.19 | 3.62 |
Class 900 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B3 | H | L | L2 | L3c | r | C | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sizes 1/2" through 2 1/2" are identical to class 1500. | |||||||||||||||
| 3 | 9.5 | 1.5 | 5 | 5 | 8-1.00 | 7.5 | 3.57 | 3.6 | 3.5 | 2.12 | 4 | 2.12 | 0.38 | 3.63 | 1.62 |
| 4 | 11.5 | 1.75 | 6.19 | 6.25 | 8-1.25 | 9.25 | 4.57 | 4.6 | 4.5 | 2.75 | 4.5 | 2.75 | 0.44 | 4.63 | 1.88 |
| 5 | 13.75 | 2 | 7.31 | 7.5 | 8-1.38 | 11 | 5.66 | 5.69 | 5.56 | 3.12 | 5 | 3.12 | 0.44 | 5.69 | 2.12 |
| 6 | 15 | 2.19 | 8.5 | 9.25 | 12-1.25 | 12.5 | 6.72 | 6.75 | 6.63 | 3.38 | 5.5 | 3.38 | 0.5 | 6.75 | 2.25 |
| 8 | 18.5 | 2.5 | 10.63 | 11.75 | 12-1.50 | 15.5 | 8.72 | 8.75 | 8.63 | 4 | 6.38 | 4.5 | 0.5 | 8.75 | 2.5 |
| 10 | 21.5 | 2.75 | 12.75 | 14.5 | 16-1.50 | 18.5 | 10.88 | 10.92 | 10.75 | 4.25 | 7.25 | 5 | 0.5 | 10.88 | 2.81 |
| 12 | 24 | 3.12 | 15 | 16.5 | 20-1.50 | 21 | 12.88 | 12.92 | 12.75 | 4.63 | 7.88 | 5.62 | 0.5 | 12.94 | 3 |
| 14 | 25.25 | 3.38 | 16.25 | 17.75 | 20-1.63 | 22 | 14.14 | 14.18 | 14 | 5.12 | 8.38 | 6.12 | 0.5 | 14.19 | 3.25 |
| 16 | 27.75 | 3.5 | 18.5 | 20 | 20-1.75 | 24.25 | 16.16 | 16.19 | 16 | 5.25 | 8.5 | 6.5 | 0.5 | 16.19 | 3.38 |
| 18 | 31 | 4 | 21 | 22.25 | 20-2.00 | 27 | 18.18 | 18.2 | 18 | 6 | 9 | 7.5 | 0.5 | 18.19 | 3.5 |
| 20 | 33.75 | 4.25 | 23 | 24.5 | 20-2.13 | 29.5 | 20.2 | 20.25 | 20 | 6.25 | 9.75 | 8.25 | 0.5 | 20.19 | 3.62 |
| 24 | 41 | 5.5 | 27.25 | 29.5 | 20-2.63 | 35.5 | 24.25 | 24.25 | 24 | 8 | 11.5 | 10.5 | 0.5 | 24.19 | 4 |
Class 1500 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B | B3 | H | L | L2 | L3c | r | C | D | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 4.75 | 0.88 | 1.38 | 1.5 | 4-0.88 | 3.25 | 0.88 | 0.9 | 0.84 | 1.25 | 2.38 | 1.25 | 0.12 | 0.93 | 0.38 | 0.88 |
| ¾ | 5.12 | 1 | 1.69 | 1.75 | 4-0.88 | 3.5 | 1.09 | 1.11 | 1.05 | 1.38 | 2.75 | 1.38 | 0.12 | 1.14 | 0.44 | 1 |
| 1 | 5.88 | 1.12 | 2 | 2.06 | 4-1.00 | 4 | 1.36 | 1.38 | 1.32 | 1.62 | 2.88 | 1.62 | 0.12 | 1.41 | 0.5 | 1.12 |
| 1¼ | 6.25 | 1.12 | 2.5 | 2.5 | 4-1.00 | 4.38 | 1.7 | 1.72 | 1.66 | 1.62 | 2.88 | 1.62 | 0.19 | 1.75 | 0.56 | 1.19 |
| 1½ | 7 | 1.25 | 2.88 | 2.75 | 4-1.12 | 4.88 | 1.95 | 1.97 | 1.9 | 1.75 | 3.25 | 1.75 | 0.25 | 1.99 | 0.62 | 1.25 |
| 2 | 8.5 | 1.5 | 3.63 | 4.12 | 8-1.00 | 6.5 | 2.44 | 2.46 | 2.38 | 2.25 | 4 | 2.25 | 0.31 | 2.5 | 0.69 | 1.5 |
| 2½ | 9.62 | 1.62 | 4.13 | 4.88 | 8-1.12 | 7.5 | 2.94 | 2.97 | 2.88 | 2.5 | 4.12 | 2.5 | 0.31 | 3 | 0.75 | 1.88 |
| 3 | 10.5 | 1.88 | 5 | 5.25 | 8-1.25 | 8 | 3.6 | 3.5 | 4.62 | 2.88 | 0.38 | |||||
| 4 | 12.25 | 2.12 | 6.19 | 6.38 | 8-1.38 | 9.5 | 4.6 | 4.5 | 4.88 | 3.56 | 0.44 | |||||
| 5 | 14.75 | 2.88 | 7.31 | 7.75 | 8-1.63 | 11.5 | 5.69 | 5.56 | 6.12 | 4.12 | 0.44 | |||||
| 6 | 15.5 | 3.25 | 8.5 | 9 | 12-1.50 | 12.5 | 6.75 | 6.63 | 6.75 | 4.69 | 0.5 | |||||
| 8 | 19 | 3.62 | 10.63 | 11.5 | 12-1.75 | 15.5 | 8.75 | 8.63 | 8.38 | 5.62 | 0.5 | |||||
| 10 | 23 | 4.25 | 12.75 | 14.5 | 12-2.00 | 19 | 10.92 | 10.75 | 10 | 7 | 0.5 | |||||
| 12 | 26.5 | 4.88 | 15 | 17.75 | 16-2.12 | 22.5 | 12.92 | 12.75 | 11.12 | 8.62 | 0.5 | |||||
| 14 | 29.5 | 5.25 | 16.25 | 19.5 | 16-2.38 | 25 | 14.18 | 14 | 11.75 | 9.5 | 0.5 | |||||
| 16 | 32.5 | 5.75 | 18.5 | 21.75 | 16-2.63 | 27.75 | 16.19 | 16 | 12.25 | 10.25 | 0.5 | |||||
| 18 | 36 | 6.38 | 21 | 23.5 | 16-2.88 | 30.5 | 18.2 | 18 | 12.88 | 10.88 | 0.5 | |||||
| 20 | 38.75 | 7 | 23 | 25.25 | 16-3.12 | 32.75 | 20.25 | 20 | 14 | 11.5 | 0.5 | |||||
| 24 | 46 | 8 | 27.25 | 30 | 16-3.63 | 39 | 24.25 | 24 | 16 | 13 | 0.5 |
Class 2500 Forged Flanges Dimensions
| Normal Pipe Size (NPS) | O | T | R | X | #/Diameter of Holes | Diameter Of Bolt Circle | B3 | H | L | L2 | L3 | r | C | Thr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ½ | 5.25 | 1.19 | 1.38 | 1.69 | 4-0.88 | 3.5 | 0.9 | 0.84 | 1.56 | 2.88 | 1.56 | 0.12 | 0.93 | 1.12 |
| ¾ | 5.5 | 1.25 | 1.69 | 2 | 4-0.88 | 3.75 | 1.11 | 1.05 | 1.69 | 3.12 | 1.69 | 0.12 | 1.14 | 1.25 |
| 1 | 6.25 | 1.38 | 2 | 2.25 | 4-1.00 | 4.25 | 1.38 | 1.32 | 1.88 | 3.5 | 1.88 | 0.12 | 1.41 | 1.38 |
| 1¼ | 7.25 | 1.5 | 2.5 | 2.88 | 4-1.12 | 5.13 | 1.72 | 1.66 | 2.06 | 3.75 | 2.06 | 0.19 | 1.75 | 1.5 |
| 1½ | 8 | 1.75 | 2.88 | 3.12 | 4-1.25 | 5.75 | 1.97 | 1.9 | 2.38 | 4.38 | 2.38 | 0.25 | 1.99 | 1.75 |
| 2 | 9.25 | 2 | 3.63 | 3.75 | 8-1.12 | 6.75 | 2.46 | 2.38 | 2.75 | 5 | 2.75 | 0.31 | 2.5 | 2 |
| 2½ | 10.5 | 2.25 | 4.13 | 4.5 | 8-1.25 | 7.75 | 2.97 | 2.88 | 3.12 | 5.62 | 3.12 | 0.31 | 3 | 2.25 |
| 3 | 12 | 2.62 | 5 | 5.25 | 8-1.38 | 9 | 3.6 | 3.5 | 6.62 | 3.62 | 0.38 | |||
| 4 | 14 | 3 | 6.19 | 6.5 | 8-1.63 | 10.75 | 4.6 | 4.5 | 7.5 | 4.25 | 0.44 | |||
| 5 | 16.5 | 3.62 | 7.31 | 8 | 8-1.88 | 12.75 | 5.69 | 5.56 | 9 | 5.12 | 0.44 | |||
| 6 | 19 | 4.25 | 8.5 | 9.25 | 8-2.12 | 14.5 | 6.75 | 6.63 | 10.75 | 6 | 0.5 | |||
| 8 | 21.75 | 5 | 10.63 | 12 | 12-2.12 | 17.25 | 8.75 | 8.63 | 12.5 | 7 | 0.5 | |||
| 10 | 26.5 | 6.5 | 12.75 | 14.75 | 12-2.63 | 21.25 | 10.92 | 10.75 | 16.5 | 9 | 0.5 | |||
| 12 | 30 | 7.25 | 15 | 17.38 | 12-2.88 | 24.38 | 12.92 | 12.75 | 18.25 | 10 | 0.5 |
ASME B16.5 Forged Flange Pressure Ratings
| Flanges pressure rating in psig for Forged Flange ASME |
|||||||
| Temperature (F°) | 150# | 300# | 400# | 600# | 900# | 1500# | 2500# |
| -20 to 100 | 285 | 740 | 985 | 1480 | 2220 | 3705 | 6170 |
| 200 | 260 | 680 | 905 | 1360 | 2035 | 3395 | 5655 |
| 300 | 230 | 655 | 870 | 1310 | 1965 | 3270 | 5450 |
| 400 | 200 | 635 | 845 | 1265 | 1900 | 3170 | 5280 |
| 500 | 170 | 605 | 805 | 1205 | 1810 | 3015 | 5025 |
| 600 | 140 | 570 | 755 | 1135 | 1705 | 2840 | 4730 |
| 650 | 125 | 550 | 730 | 1100 | 1650 | 2745 | 4575 |
| 700 | 110 | 530 | 710 | 1060 | 1590 | 2655 | 4425 |
| 750 | 95 | 505 | 675 | 1015 | 1520 | 2535 | 4230 |
| 800 | 80 | 410 | 550 | 825 | 1235 | 2055 | 3430 |
| 850 | 65 | 320 | 425 | 640 | 955 | 1595 | 2655 |
| 900 | 50 | 230 | 305 | 460 | 690 | 1150 | 1915 |
| 950 | 35 | 135 | 185 | 275 | 410 | 685 | 1145 |
| 1000 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
Global Supplier Of Carbon Steel Forged Flange In India, Check The Differences Between Cast Flanges and Forged Flange.
Custom Flanges Specification List
| Material Specification Of : | ASME B16.5 Forged Flange |
|---|---|
| Low Temperature | Above -29 Degree C (−20°F) |
| Common Types Of Flanges: | Slip On (SORF), Weld Neck (WNRF), Blind (BLRF), Lap Joint (Loose), Threaded (NPT), Socket-Weld (SWRF) |
| Special Types Of Flanges : | Nipoflange, Elboflange, Latroflange, Swivel Flange, Expanding Flange, Reducing Flange, Weldoflange |
| Marking Standard | Name of Manufacturer Schedule Type of Flange Facing Nominal Pipe Size Pressure Class ASME B16 Designation |
| Bolt Type | high strength bolts medium strength bolts low strength bolts |
| European Standard Flanges | JIS B2220 Flanges (5k to 30k) and KS1503 flanges |
| Russian-Standard Flanges | GOST 12820 / 12821-80, DIN, UNI, EN 1092-1 |
| South African Standard Flanges | SANSflanges And SABS flanges |
| Surface Finish | smooth, concentric serrated, stock |
| Gaskets Types | Full Face Gasket Flat Ring Gasket Metallic Ring Gakset |
| Advantages Of Pipe Flange | Used to Connect Pipe System Easy Repair Pipe System Assembled Without Welding |
| Standard Cover : | pressure ratings & temperature ratings, materials, marking, dimensions, weight, tolerances, testing |
| Contact Faces | RTJ (Ring Type Joint), FF (Flat Face), RF (Raised Face), T/G (Tongue And Groove ), M/F (Male And Female) |
| Size Chart | Normal Pipe Size 1/2 to NPS 24" |
| Materials | Stainless Steel (Grade 304/L, 316/L), Carbon Steel (ASTM A105 And ASTM A350), Alloy Steel (ASTM A182), Mild Steel, Duplex Steel, Pressure Vessel Steel, Titanium, Super Duplex Steel, Nickel Alloy, Monel, Inconel, Hastelloy, Copper Nickel, Cast Iron, Wrought Iron. |
| Thickness | Normal Pipe Size ≤ 18 |
| Bore Diameter | Normal Pipe ≤ 10 |
| Flanges Standards | EN 1092-1, JIS, ASME B16.5, ASME B16.47 type A, UNI, DIN |
| Pressure Rating | Class 150 To Class 2500 |
| High Temperature | Above 200°C (400°F) For Class 150 Or Above 400°C (750°F) |
Refer Forged Steel Flanges To ANSI B16.5 Maximum Weight And High Pressure Forged Flange Pressure Rating Formula.
Forged Vessel Flange Pressure Ratings
| ASME B16.5 Forged Flanges Pressure Pressure | |||||||
|---|---|---|---|---|---|---|---|
| Temperature (°C) | Class | ||||||
| Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 | |
| -29 - 38 | 19.8 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 155 | 258 | 429 |
| 150 | 15.8 | 50.2 | 66.8 | 100.3 | 151 | 251 | 418 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 146 | 243 | 405 |
| 250 | 12.1 | 46.3 | 61.7 | 92.7 | 139 | 232 | 386 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 129 | 214 | 357 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124 | 207 | 344 |
| 350 | 8.4 | 40.0 | 53.4 | 80.0 | 120 | 200 | 334 |
| 375 | 7.4 | 37.8 | 50.4 | 75.7 | 114 | 189 | 315 |
| 400 | 6.5 | 34.7 | 46.3 | 69.4 | 104 | 174 | 290 |
| 425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 144 | 240 |
| 450 | 4.6 | 23.0 | 30.7 | 46.0 | 69.0 | 115 | 192 |
| 475 | 3.7 | 17.1 | 22.8 | 34.2 | 51.3 | 85.4 | 142 |
| 500 | 2.8 | 11.6 | 15.4 | 23.2 | 34.7 | 57.9 | 96.5 |
| 538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
What Are Forged Flanges?, The Purpose Of Industrial Forged Flange?, ANSI B16.5 Class 150/ 300/ 600/ 1500 Forged Flanges Dimensions In MM.
Stainless Steel Forged Flange Weight Chart
| DN In inches | Dimension | ASME B16.5 Forged Flange Dimensional Sizes 1/2 inches to 2 1/2 inches | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 125 LBS 150 LBS | 300 LBS | 400 LBS | 600 LBS | 900 LBS | 1500 LBS | 2500 LBS | ||||||||||
| inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | |||
| 1/2 | A | 3 1/2 | 88.9 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 4 3/4 | 121 | 4 3/4 | 121 | 5 1/4 | 133.4 | |
| b | 7/16 | 11.1 | 9/16 | 14.3 | 9/16 | 14.3 | 9/16 | 14.3 | 7/8 | 22.2 | 7/8 | 22.2 | 1 3/16 | 30.2 | ||
| D2 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | ||
| D1 | 2 3/8 | 60.3 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 3 1/4 | 82.6 | 3 1/4 | 82.6 | 3 1/2 | 88.9 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
| d | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
| 3/4 | A | 3 7/8 | 98.4 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 5 1/8 | 130 | 5 1/8 | 130 | 5 1/2 | 139.7 | |
| b | 1/2 | 12.7 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | 1 1/4 | 31.8 | ||
| D2 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | ||
| D1 | 2 3/4 | 69.8 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 3/4 | 95.2 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
| 1 | A | 4 1/4 | 108 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 6 1/4 | 159 | |
| b | 9/16 | 14.3 | 11/16 | 17.5 | 11/16 | 17.5 | 11/16 | 17.5 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 3/8 | 34.9 | ||
| D2 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | ||
| D1 | 3 1/8 | 79.4 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 4 | 102 | 4 | 102 | 4 1/4 | 108 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 | 25.4 | ||
| 1 1/4 | A | 4 5/8 | 117.5 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 6 1/4 | 159 | 6 1/4 | 159 | 7 1/4 | 184.2 | |
| b | 5/8 | 15.9 | 3/4 | 19 | 13/16 | 20.6 | 13/16 | 20.6 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/2 | 38.1 | ||
| D2 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | ||
| D1 | 3 1/2 | 88.9 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 4 3/8 | 111 | 4 3/8 | 111 | 5 1/8 | 130 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
| 1 1/2 | A | 5 | 127 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 7 | 177.8 | 7 | 177.8 | 8 | 203 | |
| b | 11/16 | 17.5 | 13/16 | 20.6 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/4 | 31.8 | 1 1/4 | 31.8 | 1 3/4 | 44.5 | ||
| D2 | 2 7/8 | 73 98 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | ||
| D1 | 3 7/8 | 4 | 4 1/2 | 114 | 4 1/2 | 114 | 4 1/2 | 114 | 4 7/8 | 124 | 4 7/8 | 124 | 5 3/4 | 146 | ||
| n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
| d | 5/8 | . 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | ||
| 2 | A | 6 | 152.4 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 9 1/4 | 234.9 | |
| b | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | 1 1/2 | 38.1 | 1 1/2 | 38.1 | 2 | 50.8 | ||
| D2 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | ||
| D1 | 4 3/4 | 121 | 5 | 127 | 5 | 127 | 5 | 127 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 3/4 | 171 | ||
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
| 2 1/2 | A | 7 | 177.8 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 9 5/8 | 244 | 9 5/8 | 244 | 10 1/2 | 266.7 | |
| b | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 5/8 | 41.3 | 1 5/8 | 41.3 | 2 1/4 | 57.2 | ||
| D2 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 105 | 4 1/8 | 105 | 4 1/8 | 105 | ||
| D1 | 5 1/2 | 139.7 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 3/4 | 197 | ||
| n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
| d | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | ||
SS Forged Flanges View Thickness Calculation For Pressure Vessel, Contact US Today For Forged Steel Pipe Flange With Best Price In Mumbai, India.
Forged Pipe Flange Thickness Calculation
| ANSI B16.5 Forged Flanges Wall Thickness | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS (Normal Pipe Sizes) | Outside Daimeter (O.D.) | Schedule 10 | Schedule 20 | Schedule 30 | STD Wall | Schedule 40 | Schedule 60 | EXT Hvy | Schedule 80 | Schedule 100 | Schedule 120 | Schedule 140 | Schedule 160 | XX Hvy |
| ½ | 0.84 | 0.083 | ... | ... | 0.109 | 0.109 | ... | 0.147 | 0.147 | ... | ... | ... | 0.188 | 0.294 |
| ¾ | 1.05 | 0.083 | ... | ... | 0.113 | 0.113 | ... | 0.154 | 0.154 | ... | ... | ... | 0.219 | 0.308 |
| 1 | 1.315 | 0.109 | ... | ... | 0.133 | 0.133 | ... | 0.179 | 0.179 | ... | ... | ... | 0.25 | 0.358 |
| 1 ¼ | 1.66 | 0.109 | ... | ... | 0.14 | 0.14 | ... | 0.191 | 0.191 | ... | ... | ... | 0.25 | 0.382 |
| 1 ½ | 1.9 | 0.109 | ... | ... | 0.145 | 0.145 | ... | 0.2 | 0.2 | ... | ... | ... | 0.281 | 0.4 |
| 2 | 2.375 | 0.109 | ... | ... | 0.154 | 0.154 | ... | 0.218 | 0.218 | ... | ... | ... | 0.344 | 0.436 |
| 2 ½ | 2.875 | 0.12 | ... | ... | 0.203 | 0.203 | ... | 0.276 | 0.276 | ... | ... | ... | 0.375 | 0.552 |
| 3 | 3.5 | 0.12 | ... | ... | 0.216 | 0.216 | ... | 0.3 | 0.3 | ... | ... | ... | 0.438 | 0.6 |
| 3 ½ | 4 | 0.12 | ... | ... | 0.226 | 0.226 | ... | 0.318 | 0.318 | ... | ... | ... | ... | 0.636 |
| 4 | 4.5 | 0.12 | ... | ... | 0.237 | 0.237 | ... | 0.337 | 0.337 | ... | 0.438 | ... | 0.531 | 0.674 |
| 5 | 5.563 | 0.134 | ... | ... | 0.258 | 0.258 | ... | 0.375 | 0.375 | ... | 0.5 | ... | 0.625 | 0.75 |
| 6 | 6.625 | 0.134 | ... | ... | 0.28 | 0.28 | ... | 0.432 | 0.432 | ... | 0.562 | ... | 0.719 | 0.864 |
| 8 | 8.625 | 0.148 | 0.25 | 0.277 | 0.322 | 0.322 | 0.406 | 0.5 | 0.5 | 0.594 | 0.719 | 0.812 | 0.906 | 0.875 |
| 10 | 10.75 | 0.165 | 0.25 | 0.307 | 0.365 | 0.365 | 0.5 | 0.5 | 0.594 | 0.719 | 0.844 | 1 | 1.125 | 1 |
| 12 | 12.75 | 0.18 | 0.25 | 0.33 | 0.375 | 0.406 | 0.562 | 0.5 | 0.688 | 0.844 | 1 | 1.125 | 1.312 | 1 |
| 14 | 14 | 0.25 | 0.312 | 0.375 | 0.375 | 0.438 | 0.594 | 0.5 | 0.75 | 0.938 | 1.094 | 1.25 | 1.406 | ... |
| 16 | 16 | 0.25 | 0.312 | 0.375 | 0.375 | 0.5 | 0.656 | 0.5 | 0.844 | 1.031 | 1.219 | 1.438 | 1.594 | ... |
| 18 | 18 | 0.25 | 0.312 | 0.438 | 0.375 | 0.562 | 0.75 | 0.5 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | ... |
| 20 | 20 | 0.25 | 0.375 | 0.5 | 0.375 | 0.594 | 0.812 | 0.5 | 1.031 | 1.281 | 1.5 | 1.75 | 1.969 | ... |
| 22 | 22 | 0.25 | ... | ... | 0.375 | ... | ... | 0.5 | ... | ... | .... | .... | .... | .... |
| 24 | 24 | 0.25 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.5 | 1.219 | 1.531 | 1.812 | 2.062 | 2.344 | .... |
| 26 | 26 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 30 | 30 | 0.312 | 0.5 | 0.625 | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 36 | 36 | 0.312 | 0.5 | 0.625 | 0.375 | 0.75 | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 40 | 40 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
| 42 | 42 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
| 48 | 48 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
Carbon Steel Forged Flange Bolt Size
| Class 150 Flanges | Class 300 Flanges | Class 600 Flanges | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | |||
| 1/16 RF | RTJ | 1/16 RF | RTJ | 1/4 RF | RTJ | |||||||
| 1/2 | 4 | 0.50 | 2-1/4 | – | 4 | 0.50 | 2-1/2 | 3 | 4 | 0.50 | 3 | 3 |
| 3/4 | 4 | 0.50 | 2-1/2 | – | 4 | 0.63 | 3 | 3-1/2 | 4 | 0.63 | 3-1/2 | 3-1/2 |
| 1 | 4 | 0.50 | 2-1/2 | 3 | 4 | 0.63 | 3 | 3-1/2 | 4 | 0.63 | 3-1/2 | 3-1/2 |
| 1-1/4 | 4 | 0.50 | 2-3/4 | 3-1/4 | 4 | 0.63 | 3-1/4 | 3-3/4 | 4 | 0.63 | 3-3/4 | 3-3/4 |
| 1-1/2 | 4 | 0.50 | 2-3/4 | 3-1/4 | 4 | 0.75 | 3-1/2 | 4 | 4 | 0.75 | 4-1/4 | 4-1/4 |
| 2 | 4 | 0.63 | 3-1/4 | 3-3/4 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.63 | 4-1/4 | 4-1/4 |
| 2-1/2 | 4 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4 | 4-1/2 | 8 | 0.75 | 4-3/4 | 4-3/4 |
| 3 | 4 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/4 | 4-3/4 | 8 | 0.75 | 5 | 5 |
| 3-1/2 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/4 | 5 | 8 | 0.88 | 5-1/2 | 5-1/2 |
| 4 | 8 | 0.63 | 3-1/2 | 4 | 8 | 0.75 | 4-1/2 | 5 | 8 | 0.88 | 5-3/4 | 5-3/4 |
| 5 | 8 | 0.75 | 3-3/4 | 4-1/4 | 8 | 0.75 | 4-3/4 | 5-1/4 | 8 | 1.00 | 6-1/2 | 6-1/2 |
| 6 | 8 | 0.75 | 4 | 4-1/2 | 12 | 0.75 | 4-3/4 | 5-1/2 | 12 | 1.00 | 6-3/4 | 6-3/4 |
| 8 | 8 | 0.75 | 4-1/4 | 4-3/4 | 12 | 0.88 | 5-1/2 | 6 | 12 | 1.13 | 7-1/2 | 7-3/4 |
| 10 | 12 | 0.88 | 4-1/2 | 5 | 16 | 1.00 | 6-1/4 | 6-3/4 | 16 | 1.25 | 8-1/2 | 8-1/2 |
| 12 | 12 | 0.88 | 4-3/4 | 5-1/4 | 16 | 1.13 | 6-3/4 | 7-1/4 | 20 | 1.25 | 8-3/4 | 8-3/4 |
| 14 | 12 | 1.00 | 5-1/4 | 5-3/4 | 20 | 1.13 | 7 | 7-1/2 | 20 | 1.38 | 9-1/4 | 9-1/4 |
| 16 | 16 | 1.00 | 5-1/4 | 5-3/4 | 20 | 1.25 | 7-1/2 | 8 | 20 | 1.50 | 10 | 10 |
| 18 | 16 | 1.13 | 5-3/4 | 6-1/4 | 24 | 1.25 | 7-3/4 | 8-1/4 | 20 | 1.63 | 10-3/4 | 10-3/4 |
| 20 | 20 | 1.13 | 6-1/4 | 6-3/4 | 24 | 1.25 | 8 | 8-3/4 | 24 | 1.63 | 11-1/4 | 11-1/2 |
| 24 | 20 | 1.25 | 6-3/4 | 7-1/4 | 24 | 1.50 | 9 | 10 | 24 | 1.88 | 13 | 13-1/4 |
| Class 900 Flanges | Class 1500 Flanges | Class 2500 Flanges | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NPS | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | # Bolts And Studs | Diameter of Bolts And Studs | Stud Length | |||
| 1/4 RF | RTJ | 1/4 RF | RTJ | 1/4 RF | RTJ | |||||||
| 1/2 | 4 | 0.75 | 4-1/4 | 4-1/4 | 4 | 0.75 | 4-1/4 | 4-1/4 | 4 | 0.75 | 4-3/4 | 4-3/4 |
| 3/4 | 4 | 0.75 | 4-1/2 | 4-1/2 | 4 | 0.75 | 4-1/2 | 4-1/2 | 4 | 0.75 | 5 | 5 |
| 1 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5-1/2 | 5-1/2 |
| 1-1/4 | 4 | 0.88 | 5 | 5 | 4 | 0.88 | 5 | 5 | 4 | 1.00 | 6 | 6 |
| 1-1/2 | 4 | 1.00 | 5-1/2 | 5-1/2 | 4 | 1.00 | 5-1/2 | 5-1/2 | 4 | 1.13 | 6-3/4 | 6-3/4 |
| 2 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 1.00 | 7 | 7 |
| 2-1/2 | 8 | 1.00 | 6-1/4 | 6-1/4 | 8 | 1.00 | 6-1/4 | 6-1/4 | 8 | 1.13 | 7-3/4 | 8 |
| 3 | 8 | 0.88 | 5-3/4 | 5-3/4 | 8 | 1.13 | 7 | 7 | 8 | 1.25 | 8-3/4 | 9 |
| 4 | 8 | 1.13 | 6-3/4 | 6-3/4 | 8 | 1.25 | 7-3/4 | 7-3/4 | 8 | 1.50 | 10 | 10-1/4 |
| 5 | 8 | 1.25 | 7-1/2 | 7-1/2 | 8 | 1.50 | 9-3/4 | 9-3/4 | 8 | 1.75 | 11-3/4 | 12-1/4 |
| 6 | 12 | 1.13 | 7-1/2 | 7-3/4 | 12 | 1.38 | 10-1/4 | 10-1/2 | 8 | 2.00 | 13-1/2 | 14 |
| 8 | 12 | 1.38 | 8-3/4 | 8-3/4 | 12 | 1.63 | 11-1/2 | 11-3/4 | 12 | 2.00 | 15 | 15-1/2 |
| 10 | 16 | 1.38 | 9-1/4 | 9-1/4 | 12 | 1.88 | 13-1/4 | 13-1/2 | 12 | 2.50 | 19-1/4 | 20 |
| 12 | 20 | 1.38 | 10 | 10 | 16 | 2.00 | 14-3/4 | 15-1/4 | 12 | 2.75 | 21-1/4 | 22 |
| 14 | 20 | 1.50 | 10-3/4 | 11 | 16 | 2.25 | 16 | 16-3/4 | – | – | – | – |
| 16 | 20 | 1.63 | 11-1/4 | 11-1/2 | 16 | 2.50 | 17-1/2 | 18-1/2 | – | – | – | – |
| 18 | 20 | 1.88 | 12-3/4 | 13-1/4 | 16 | 2.75 | 19-1/2 | 20-3/4 | – | – | – | – |
| 20 | 20 | 2.00 | 13-3/4 | 14-1/4 | 16 | 3.00 | 21-1/4 | 22-1/4 | – | – | – | – |
| 24 | 20 | 2.50 | 17-1/4 | 18 | 16 | 3.50 | 24-1/4 | 25-1/2 | – | – | – | – |
Get Instant Delivery Types Of ASME B16.5 Forged Flanges
4 Inch, BS EN 10204-3.1, ASME B16.5 Forged flanges
6 Inch CL1500, A350 LF2 CL1, Forged Stainless Steel Flanges
8 Inch, DN 100 PN 50 300LB Astm A105 Forged Steel Flanges
20 Inch, Class 150, Forged Welding Neck Flanges
Class 2500, ANSI B16.5, Size 10 Inch, Forged Hub Type Flanges
A182 304L 150LB, 10 inch, RF Ends, Slip On Forged Steel Flanges
600# Pressure, RF Face, PN16, Square Flange Forged
PN250, A182 F304/304L, Stainless Steel Forged Flanges
10 Inch, A694 F42, Bs 4504 Forged Blind Flanges
ASTM A105, Carbon Steel Forged Flanges
ASTM A350, ASME Class 150 to 2500, Hot Forged Flanges
1/2 to 56 inches, Class 150, Forged Billet Flanges
ASME B16.5 Forged Flange is used to reduce corrosion to some extent. The weldability of Carbon Steel Forged Flange is better but is prone to intergranular corrosion cracking after welding. To improve the strength of the flange, the Forged Flange Dimensions are maintained according to standards. The DIN number corresponds to the pressure classes, for example, the DIN86029 PN10 Forged Flanges belong to the PN10 number. The material strength is higher in Duplex Steel Forged Flanges because of the solid solution heat treatment of duplex steel. Acidic conditions are mitigated with the Copper Nickel Forged Flanges. Alloy flanges such as Inconel Forged Flanges or the different make of Stainless Steel Forged Flanges can meet the difference in the requirements such as temperature, pressure, corrosion resistance and weight. We are the leading forged Flanges manufacturer in Ahmedabad. We keep the forged Flanges standard high. Our forged Flanges manufacturer Rajkot can meet your requirements accordingly as well.