ANSI B16.5 Flanges

Class 150 Flanges

General Note: All Dimensions are in Inches

400lb

1480 PSIMax. Working Pressure

300lb150lb 600lb

-28 To +540 Deg C

Flanges are available as Weld Neck, Integral, Blinds, Targets and Test Blinds for use with the following

Rating

990 PSI

Operating Temperature Range

450 PSI 1125 PSI 1500 PSI 2225 PSI

-28 To +540 Deg C

-28 To +540 Deg C

Hub Diameter

740 PSI285 PSI

Test Pressure

-28 To +540 Deg C

D T A E1/2 3.50 0.44 1.19 0.843/4 3.88 0.50 1.50 1.051 4.25 0.56 1.94 1.32

1.1/4 4.62 0.62 2.31 1.661.1/2 5.00 0.69 2.56 1.90

2 6.00 0.75 3.06 2.382.1/2 7.00 0.88 3.56 2.88

3 7.50 0.94 4.25 3.503.1/2 8.50 0.94 4.81 4.00

4 9.00 0.94 5.31 4.505 10.00 0.94 6.44 5.566 11.00 1.00 7.56 6.638 13.50 1.12 9.69 8.63

10 16.00 1.19 12.00 10.7512 19.00 1.25 14.38 12.7514 21.00 1.38 15.75 14.0016 23.50 1.44 18.00 16.0018 25.00 1.56 19.88 18.0020 27.50 1.60 22.00 20.0024 32.00 1.88 26.12 24.00

Min. Thickness of Flange

Hub Diameter Beginning of Chamfer at

Welding NeckHU

B AND

BORE

DIME

NSIO

NS

Nominal Pipe Size

Outside Diameter of

Flange

Class 300 Flanges

Diameter of Hub

D T A E1/2 3.75 0.56 1.50 0.843/4 4.62 0.62 1.88 1.051 4.88 0.69 2.12 1.32

1.1/4 5.25 0.75 2.50 1.661.1/2 6.12 0.81 2.75 1.90

2 6.50 0.88 3.31 2.382.1/2 7.50 1.00 3.94 2.88

3 8.25 1.12 4.62 3.503.1/2 9.00 1.19 5.25 4.00

4 10.00 1.25 5.75 4.505 11.00 1.38 7.00 5.566 12.50 1.44 8.12 6.638 15.00 1.62 10.25 8.63

10 17.50 1.88 12.62 10.7512 20.50 2.00 14.75 12.7514 23.00 2.12 16.75 14.0016 25.50 2.25 19.00 16.0018 28.00 2.38 21.00 18.0020 30.50 2.50 23.12 20.0024 36.00 2.75 27.62 24.00

HUB A

ND BO

RE DI

MENS

IONS

Nominal Pipe Size

Outside Diameter of

FlangeMin. Thickness

of Flange Diameter of HubHub Diameter Beginning of Chamfer at

Welding Neck

D T A E1/2 3.75 0.56 1.50 0.843/4 4.62 0.62 1.88 1.051 4.88 0.69 2.12 1.32

1.1/4 5.25 0.81 2.50 1.661.1/2 6.12 0.88 2.75 1.90

2 6.50 1.00 3.31 2.382.1/2 7.50 1.12 3.94 2.88

3 8.25 1.25 4.62 3.503.1/2 9.00 1.38 5.25 4.00

4 10.00 1.38 5.75 4.505 11.00 1.50 7.00 5.566 12.50 1.62 8.12 6.638 15.00 1.88 10.25 8.63

10 17.50 2.12 12.62 10.7512 20.50 2.25 14.75 12.7514 23.00 2.38 16.75 14.0016 25.50 2.50 19.00 16.0018 28.00 2.62 21.00 18.0020 30.50 2.75 23.12 20.0024 36.00 3.00 27.62 24.00

HUB A

ND BO

RE DI

MENS

IONS

Nominal Pipe Size

Outside Diameter of



Welding Neck

Class 400 Flanges

D T A E1/2 3.75 0.56 1.50 0.843/4 4.62 0.62 1.88 1.051 4.88 0.69 2.12 1.32

1.1/4 5.25 0.81 2.50 1.661.1/2 6.12 0.88 2.75 1.90

2 6.50 1.00 3.31 2.382.1/2 7.50 1.12 3.94 2.88

3 8.25 1.25 4.62 3.503.1/2 9.00 1.38 5.25 4.00

4 10.75 1.50 6.00 4.505 13.00 1.75 7.44 5.566 14.00 1.88 8.75 6.638 16.50 2.19 10.75 8.63

10 20.00 2.50 13.50 10.7512 22.00 2.62 15.75 12.7514 23.75 2.75 17.00 14.0016 27.00 3.00 19.50 16.0018 29.25 3.25 21.50 18.0020 32.00 3.50 24.00 20.0024 37.00 4.00 28.25 24.00

Class 600 FlangesHU

B AND

BORE

DIME

NSIO

NS

Nominal Pipe Size

Outside Diameter of



Welding Neck

D T A E1/2 4.75 0.88 1.50 0.843/4 5.12 1.00 1.75 1.051 5.88 1.12 2.06 1.32

1.1/4 6.25 1.12 2.50 1.661.1/2 7.00 1.25 2.75 1.90

2 8.50 1.50 4.12 2.382.1/2 9.62 1.62 4.88 2.88

3 9.50 1.50 5.00 3.504 11.50 1.75 6.25 4.505 13.75 2.00 7.50 5.566 15.00 2.19 9.25 6.638 18.50 2.50 11.75 8.63

10 21.50 2.75 14.50 10.7512 24.00 3.12 16.50 12.7514 25.25 3.38 17.75 14.0016 27.75 3.50 20.00 16.0018 31.00 4.00 22.25 18.0020 33.75 4.25 24.50 20.0024 41.00 5.50 29.50 24.00

Diameter of HubHub Diameter Beginning of Chamfer at

Welding Neck

Class 900 FlangesHU

B AND

BORE

DIME

NSIO

NS

Nominal Pipe Size

Outside Diameter of


of Flange

D T A E1/2 4.75 0.88 1.50 0.843/4 5.12 1.00 1.75 1.051 5.88 1.12 2.06 1.32

1.1/4 6.25 1.12 2.50 1.661.1/2 7.00 1.25 2.75 1.90

2 8.50 1.50 4.12 2.382.1/2 9.62 1.62 4.88 2.88

3 10.50 1.88 5.25 3.504 12.25 2.12 6.38 4.505 14.75 2.88 7.75 5.566 15.50 3.25 9.00 6.638 19.00 3.62 11.50 8.63

10 23.00 4.25 14.50 10.7512 26.50 4.88 17.75 12.7514 29.50 5.25 19.50 14.0016 32.50 5.75 21.75 16.0018 36.00 6.38 23.50 18.0020 38.75 7.00 25.25 20.0024 46.00 8.00 30.00 24.00

Class 1500 FlangesHU

B AND

BORE

DIME

NSIO

NSNominal Pipe

SizeOutside

Diameter of Flange

Min. Thickness of Flange Diameter of Hub

Hub Diameter Beginning of Chamfer at

Welding Neck

D T A E1/2 5.25 1.19 1.69 0.843/4 5.50 1.25 2.00 1.051 6.25 1.38 2.25 1.32

1.1/4 7.25 1.50 2.88 1.661.1/2 8.00 1.75 3.12 1.90

2 9.25 2.00 3.75 2.382.1/2 10.50 2.25 4.50 2.88

3 12.00 2.62 5.25 3.504 14.00 3.00 6.50 4.505 16.50 3.62 8.00 5.566 19.00 4.25 9.25 6.638 21.75 5.00 12.00 8.63

10 26.50 6.50 14.75 10.7512 30.00 7.25 17.38 12.75

Class 2500 Flanges

HUB A

ND BO

RE DI

MENS

IONS

Nominal Pipe Size

Outside Diameter of



Welding Neck

900lb

pressure ratings:

1,500lb

3705 PSI2220 PSI

5575 PSI3350 PSI

-28 To +540 Deg C

2,500lb

9275 PSI

6170 PSI

-28 To +540 Deg C

-28 To +540 Deg C

L B P1.88 0.62 2.38 0.62 4 1/22.06 0.82 2.75 0.62 4 1/22.19 1.05 3.12 0.62 4 1/22.25 1.38 3.50 0.62 4 1/22.44 1.61 3.88 0.62 4 1/22.50 2.07 4.75 0.75 4 5/82.75 2.47 5.50 0.75 4 5/82.75 3.07 6.00 0.75 4 5/82.81 3.55 7.00 0.75 8 5/83.00 4.03 7.50 0.75 8 5/83.50 5.05 8.50 0.88 8 3/43.50 6.07 9.50 0.88 8 3/44.00 7.98 11.75 0.88 8 3/44.00 10.02 14.25 1.00 12 7/84.50 12.00 17.00 1.00 12 7/85.00 18.75 1.12 12 15.00 21.25 1.12 16 15.50 22.75 1.25 16 1.1/85.69 25.00 1.25 20 1.1/86.00 29.50 1.38 20 1.1/4

To be Specified by Purchaser

Diameter of Bolt Holes Number of Bolts

Diameter of Bolts

Diameter of Bolt Hole Cirlcle

Welding Neck Length Through

HubWelding Neck

Bore

L B P2.06 0.62 2.62 0.62 4 1/22.25 0.82 3.25 0.75 4 5/82.44 1.05 3.50 0.75 4 5/82.56 1.38 3.88 0.75 4 5/82.69 1.61 4.50 0.88 4 3/42.75 2.07 5.00 0.75 8 5/83.00 2.47 5.88 0.88 8 3/43.12 3.07 6.62 0.88 8 3/43.19 3.55 7.25 0.88 8 3/43.38 4.03 7.88 0.88 8 3/43.88 5.05 9.25 0.88 8 3/43.88 6.07 10.62 0.88 12 3/44.38 7.98 13.00 1.00 12 7/84.62 10.02 15.25 1.12 16 15.12 12.00 17.75 1.25 16 1.1/85.62 12.00 20.25 1.25 20 1.1/85.75 22.50 1.38 20 1.1/46.25 24.75 1.38 24 1.1/46.38 27.00 1.38 24 1.1/46.62 32.00 1.62 24 1.1/2




Diameter of Bolts


HubWelding Neck

Bore

L B P2.06 2.62 0.62 4 1/22.25 3.25 0.75 4 5/82.44 3.50 0.75 4 5/82.62 3.88 0.75 4 5/82.75 4.50 0.88 4 3/42.88 5.00 0.75 8 5/83.12 5.88 0.88 8 3/43.25 6.62 0.88 8 3/43.38 7.25 1.00 8 7/83.50 7.88 1.00 8 7/84.00 9.25 1.00 8 7/84.06 10.62 1.00 12 7/84.62 13.00 1.12 12 14.88 15.25 1.25 16 1.1/85.38 17.75 1.38 16 1.1/45.88 20.25 1.38 20 1.1/46.00 22.50 1.50 20 1.3/86.50 24.75 1.50 24 1.3/86.62 27.00 1.62 24 1.1/26.88 32.00 1.88 24 1.3/4



Diameter of Bolts


HubWelding Neck

BoreDiameter of Bolt

Hole Cirlcle

L B P2.06 2.62 0.62 4 1/22.25 3.25 0.75 4 5/82.44 3.50 0.75 4 5/82.62 3.88 0.75 4 5/82.75 4.50 0.88 4 3/42.88 5.00 0.75 8 5/83.12 5.88 0.88 8 3/43.25 6.62 0.88 8 3/43.38 7.25 1.00 8 7/84.00 8.50 1.00 8 7/84.50 10.50 1.12 8 14.62 11.50 1.12 12 15.25 13.75 1.25 12 1.1/86.00 17.00 1.38 16 1.1/46.12 19.25 1.38 20 1.1/46.50 20.75 1.50 20 1.3/87.00 23.75 1.62 20 1.1/27.25 25.75 1.75 20 1.5/87.50 28.50 1.75 24 1.5/88.00 33.00 2.00 24 1.7/8


HubDiameter of

BoltsDiameter of Bolt

Holes Number of BoltsWelding Neck


Hole Cirlcle


L B P2.38 3.25 0.88 4 3/42.75 3.50 0.88 4 3/42.88 4.00 1.00 4 7/82.88 4.38 1.00 4 7/83.25 4.88 1.12 4 14.00 6.50 1.00 8 7/84.12 7.50 1.12 8 14.00 7.50 1.00 8 7/84.50 9.25 1.25 8 1.1/85.00 11.00 1.38 8 1.1/45.50 12.50 1.25 12 1.1/86.38 15.50 1.50 12 1.3/87.25 18.50 1.50 16 1.3/87.88 21.00 1.50 20 1.3/88.38 22.00 1.62 20 1.1/28.50 24.25 1.75 20 1.5/89.00 27.00 2.00 20 1.7/89.75 29.50 2.12 20 2

11.50 35.50 2.62 20 2.1/2



HubWelding Neck


Hole CirlcleDiameter of Bolt

Holes Number of BoltsDiameter of

Bolts

L B P2.38 3.25 0.88 4 3/42.75 3.50 0.88 4 3/42.88 4.00 1.00 4 7/82.88 4.38 1.00 4 7/83.25 4.88 1.12 4 14.00 6.50 1.00 8 7/84.12 7.50 1.12 8 14.62 8.00 1.25 8 1.1/84.88 9.50 1.38 8 1.1/46.12 11.50 1.62 8 1.1/26.75 12.50 1.50 12 1.3/88.38 15.50 1.75 12 1.5/8

10.00 19.00 2.00 12 1.7/811.12 22.50 2.12 16 211.75 25.00 2.38 16 2.1/412.25 27.75 2.62 16 2.1/212.88 30.50 2.88 16 2.3/414.00 32.75 3.12 16 316.00 39.00 3.62 16 3.1/2



Diameter of Bolts


HubWelding Neck


Hole Cirlcle

L B P2.88 3.50 0.88 4 3/43.12 3.75 0.88 4 3/43.50 4.25 1.00 4 7/83.75 5.12 1.12 4 14.38 5.75 1.25 4 1.1/85.00 6.75 1.12 8 15.62 7.75 1.25 8 1.1/86.62 9.00 1.38 8 1.1/47.50 10.75 1.62 8 1.1/29.00 12.75 1.88 8 1.3/4

10.75 14.50 2.12 8 212.50 17.25 2.12 12 216.50 21.25 2.62 12 2.1/218.25 24.38 2.88 12 2.3/4




Diameter of Bolts


HubWelding Neck

Bore

Length of Raised Face

Diameter of Raised Face

Total Thickness of Flange

2.25 -2.50 -2.50 3.002.75 3.252.75 3.253.25 3.753.50 4.003.50 4.003.50 4.003.50 4.003.75 4.254.00 4.504.25 4.754.50 5.004.75 5.255.25 5.755.25 5.755.75 6.256.25 6.756.75 7.25



2.50 3.003.00 3.503.00 3.503.25 3.753.50 4.003.50 4.004.00 4.504.25 4.754.25 4.754.50 5.004.75 5.254.75 5.255.50 6.006.25 6.756.75 7.257.00 7.507.50 8.007.75 8.258.00 8.759.00 10.00




3.00 3.003.50 3.503.50 3.503.75 3.754.25 4.254.25 4.254.75 4.755.00 5.005.50 5.505.50 5.505.75 5.756.00 6.006.75 6.757.50 7.508.00 8.008.25 8.258.75 8.759.00 9.009.50 9.75

10.50 11.00




3.00 3.003.50 3.503.50 3.503.75 3.754.25 4.254.25 4.254.75 4.755.00 5.005.50 5.505.75 5.756.50 6.506.75 6.757.50 7.508.50 8.508.75 8.759.25 9.25

10.00 10.0010.75 10.7511.25 11.5013.00 13.25




4.25 4.254.50 4.505.00 5.005.00 5.005.50 5.505.75 5.756.25 6.255.75 5.756.75 6.757.50 7.507.50 7.508.75 8.759.25 9.25

10.00 10.0010.75 11.0011.25 11.5012.75 13.2513.75 14.2517.25 18.00




4.25 4.254.50 4.505.00 5.005.00 5.005.50 5.505.75 5.756.25 6.257.00 7.007.75 7.759.75 9.75

10.25 10.5011.50 11.7513.25 13.5014.75 15.2516.00 16.7517.50 18.5019.50 20.7521.25 22.2524.25 25.50




4.75 4.755.00 5.005.50 5.506.00 6.006.75 6.757.00 7.007.75 8.008.75 9.00

10.00 10.2511.75 12.2513.50 14.0015.00 15.5019.25 20.0021.25 22.00


Documents

ANSI B16.5 Flanges