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ASME B16.5 Welding Neck Flanges

  • Carbon Steel

  • ASME

  • China (Mainland)

  • Standard

  • Export standard packaging.

  • Depends on your order quantity.

 

WN Flanges:

ASME B16.5 Welding Neck Flanges :

Dimension B corresponds to the pipe inside diameter.Values quoted assume 40S/Standard wall thickness.
Weights are based on manufacturer’s data and are approximate.
Flat face flanges may be provided at full thickness,C,or with raised face removed (the latter is nonstandard).

Specification:

Pipe Welding Neck Flange

Flange Data

Hub Data

Raised Face

Drilling Data


Nominal
Pipe Size

Outside Diameter

A

B

C

D

E

F

G

H

I

J

 

Overall
Diameter

Inside
Diameter

Flange
Thickness
min

Overall
Length

Diameter
at Weld 
Bevel

Hub
Diameter

Face
Diameter

Number
of Holes

Bolt Hole
Diameter

Diameter of Circle
of Holes



in
mm

in
mm

in
mm

in
mm

in
mm

in
mm

in
mm

in
mm

in
mm

in
mm

in
mm


1/2

0.84

3.5

0.62

0.44

1.88

0.84

1.19

1.38

4

0.62

2.38

 

21.3

88.9

15.7

11.2

47.8

21.3

30.2

35

15.7

60.45


3/4

1.05

3.88

0.82

0.5

2.06

1.05

1.5

1.69

4

0.62

2.75

 

26.7

98.6

20.8

12.7

52.3

26.7

38.1

42.9

15.7

69.85


1

1.315

4.25

1.05

0.56

2.19

1.32

1.94

2

4

0.62

3.12

 

33.4

108

26.7

14.2

55.6

33.5

49.3

50.8

15.7

79.25


1 1/4

1.66

4.62

117.3

0.62

15.7

57.15

2.31

2.5

4

0.62

3.5

 

42.2

117.3

1.38

15.7

2.25

1.66

58.7

63.5

15.7

88.9


1 1/2

1.9

5

1.61

0.69

2.44

1.9

2.56

2.88

4

0.62

3.88

 

48.3

127

40.9

17.5

62

48.3

65

73.15

15.7

98.6


2

2.375

6

2.07

0.75

2.5

2.38

3.06

3.62

4

0.75

4.75

 

60.3

152.4

52.6

19.1

63.5

60.45

77.7

91.9

19.1

120.7


2 1/2

2.875

7

2.47

0.88

2.75

2.88

3.56

4.12

4

0.75

5.5

 

73

177.8

62.7

22.4

69.85

73.15

90.4

104.6

19.1

139.7


3

3.5

7.5

3.07

0.94

2.75

3.5

4.25

5

4

0.75

6

 

88.9

190.5

78

23.9

69.85

88.9

108

127

19.1

152.4

 

 

 

 

 
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