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Forged Flanges Manufacturer India

Stainless Steel Forged Flange Dimensions Chart And Standard Specification Of ASME B16.5 Forged Flanges.

ASME B16.5 Forged Flange

ASME B16.5 Forged Flange

Stainless Steel Forged Flanges

Stainless Steel Forged Flanges

Carbon 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

ASTM A105 Forged Steel Flanges

Forged Nozzle Flange

Forged Nozzle Flange

Forged Vessel Flange

Forged Vessel Flange


the purpose of forged flanges

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


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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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 150Class 300Class 400Class 600Class 900Class 1500Class 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 inchesDimensionASME B16.5 Forged Flange Dimensional Sizes 1/2 inches to 2 1/2 inches
125 LBS
150 LBS
300 LBS400 LBS600 LBS900 LBS1500 LBS2500 LBS
inchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeterinchesmillimeter
1/2A3 1/288.93 3/495.23 3/495.23 3/495.24 3/41214 3/41215 1/4133.4
b7/1611.19/1614.39/1614.39/1614.37/822.27/822.21 3/1630.2
D21 3/834.91 3/834.91 3/834.91 3/834.91 3/834.91 3/834.91 3/834.9
D12 3/860.32 5/866.72 5/866.72 5/866.73 1/482.63 1/482.63 1/288.9
n44444444444-444
d5/815.95/815.95/815.95/815.97/822.27/822.27/822.2
3/4A3 7/898.44 5/8117.54 5/8117.54 5/8117.55 1/81305 1/81305 1/2139.7
b1/212.75/815.95/815.95/815.9125.4125.41 1/431.8
D21 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.91 11/1642.9
D12 3/469.83 1/482.53 1/482.53 1/482.53 1/288.93 1/288.93 3/495.2
n44444444444-444
d5/815.93/4193/4193/4197/822.27/822.27/822.2
1A4 1/41084 7/8123.84 7/8123.84 7/8123.85 7/8149.25 7/8149.26 1/4159
b9/1614.311/1617.511/1617.511/1617.51 1/828.61 1/828.61 3/834.9
D2250.8250.8250.8250.8250.8250.8250.8
D13 1/879.43 1/288.93 1/288.93 1/288.9410241024 1/4108
n44444444444444
d5/815.93/4193/4193/419125.4125.4125.4
1 1/4A4 5/8117.55 1/4133.45 1/4133.45 1/4133.46 1/41596 1/41597 1/4184.2
b5/815.93/41913/1620.613/1620.61 1/828.61 1/828.61 1/238.1
D22 1/263.52 1/263.52 1/263.52 1/263.52 1/263.52 1/263.52 1/263.5
D13 1/288.93 7/898.43 7/898.43 7/898.44 3/81114 3/81115 1/8130
n44444444444444
d5/815.93/4193/4193/419125.4125.41 1/828.6
1 1/2A51276 1/8155.66 1/8155.66 1/8155.67177.87177.88203
b11/1617.513/1620.67/822.27/822.21 1/431.81 1/431.81 3/444.5
D22 7/873 982 7/8732 7/8732 7/8732 7/8732 7/8732 7/873
D13 7/844 1/21144 1/21144 1/21144 7/81244 7/81245 3/4146
n44444444444444
d5/8. 15.97/822.27/822.27/822.21 1/828.61 1/828.61 1/431.8
2A6152.46 1/2165.16 1/2165.16 1/2165.18 1/2215.98 1/2215.99 1/4234.9
b3/4197/822.2125.4125.41 1/238.11 1/238.1250.8
D23 5/892.13 5/892.13 5/892.13 5/892.13 5/892.13 5/892.13 5/892.1
D14 3/41215127512751276 1/2165.16 1/2165.16 3/4171
n44888888888888
d3/4193/4193/4193/419125.4125.41 1/828.6
2 1/2A7177.87 1/2190.57 1/2190.57 1/2190.59 5/82449 5/824410 1/2266.7
b7/822.2125.41 1/828.61 1/828.61 5/841.31 5/841.32 1/457.2
D24 1/8104.84 1/8104.84 1/8104.84 1/8104.84 1/81054 1/81054 1/8105
D15 1/2139.75 7/8149.25 7/8149.25 7/8149.27 1/2190.57 1/2190.57 3/4197
n44888888888888
d3/4197/822.27/822.27/822.21 1/828.61 1/828.61 1/431.8

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

4 Inch, BS EN 10204-3.1, ASME B16.5 Forged flanges

6 Inch CL1500, A350 LF2 CL1, Forged Stainless Steel Flange

6 Inch CL1500, A350 LF2 CL1, Forged Stainless Steel Flanges

8 Inch, DN 100 PN 50 300LB Astm A105 Forged Steel Flanges

8 Inch, DN 100 PN 50 300LB Astm A105 Forged Steel Flanges

20 Inch, Class 150, Forged Welding Neck Flange

20 Inch, Class 150, Forged Welding Neck Flanges


Class 2500, ANSI B16.5, Size 10 Inch, Forged Hub Type Flange

Class 2500, ANSI B16.5, Size 10 Inch, Forged Hub Type Flanges

A182 304L 150LB, 10 inch, RF Ends, Slip On Forged Steel Flanges

A182 304L 150LB, 10 inch, RF Ends, Slip On Forged Steel Flanges

600# Pressure, RF Face, PN16, Square Flange Forged

600# Pressure, RF Face, PN16, Square Flange Forged

PN250, A182 F304/304L, Stainless Steel Forged Flange

PN250, A182 F304/304L, Stainless Steel Forged Flanges


10 Inch, A694 F42, Bs 4504 Forged Blind Flange

10 Inch, A694 F42, Bs 4504 Forged Blind Flanges

ASTM A105, Carbon Steel Forged Flange

ASTM A105, Carbon Steel Forged Flanges

ASTM A350, ASME Class 150 to 2500, Hot Forged Flange

ASTM A350, ASME Class 150 to 2500, Hot Forged Flanges

1/2 to 56 inches, Class 150, Forged Billet Flange

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.



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