PRODUCTS  
  Welding Neck Flanges 150 lb/sq.in.  
 
 
 

 
  ANSI B 16.5  
 
Nominal Size
D
b
g
m
a
j
h
k
Holes
I
kg.
1/2"
88.9
11.1

34.9

30.2

21.3

15.7

47.6
60.3

4

15.9

0.05 0

3/4"

98.4

12.7
42.9
38.1
26.7
20.8
52.4
69.8

4

15.9
0.700

1"

107.9
14.3
50.8
49.2
33.5
26.7
55.6
79.4

4

15.9
1.100

11/4"

117.5
15.9
63.5
58.8
42.2
35.1
57.1
88.9

4

15.9
1.500

11/2"

127.0
17.5
73.0
65.1
48.3
40.9
61.9
98.4

4

15.9
1.800

2"

152.4
19.0
92.1
77.8
60.3
52.6
63.5
120.6

4

19.0
2.700

21/2"

177.8
22.2
104.8
90.5
73.1
62.7
69.8
139.7

4

19.0
4.400

3"

190.5
23.8
127.0
107.9
88.9
78.0
69.8
152.4

4

19.0
5.200

4

228.6
23.8
157.2
134.9
114.3
102.4
76.2
190.5

8

19.0
7.500

5

254.0
23.8
185.7
163.5
141.2
128.3
88.9
215.9

8

22.2
9.200

6

279.4
25.4
215.9
192.1
168.4
154.2
88.9
241.3

8

22.2

11.000

 
     
  Welding Neck Flanges 300 lb/sq.in.  
     
 
 
     
  ANSI B 16.5  
 
Nominal Size
D
b
g
m
a
j
h
k
Holes
I
kg.

1/2"

95.2

14.3

34.9

38.1

21.3

15.7

52.4

66.7

4

15.9

0.900

3/4"

117.5

15.9

42.9

47.6

26.7

20.8

57.1

82.5

4

19.5

1.500

1"

123.8

17.5

50.8

54.0

33.5

26.7

61.9

88.9

4

19.0

1.900

11/4"

133.3

19.0

63.5

63.5

42.2

35.1

65.1

98.4

4

19.0

2.600

11/2"

155.6

20.6

73.0

69.8

48.3

40.9

68.3

114.3

4

22.2

3.300

2"

165.1

22.2

92.1

84.1

60.3

52.6

69.8

127.0

8

19.0

3.600

21/2"

190.5

25.4

104.8

100.0

73.1

62.7

76.2

149.2

8

22.2

5.400

3"

209.5

28.6

127.0

117.5

88.9

78.0

79.4

168.3

8

22.2

7.400

4

254.0

31.7

157.2

146.0

114.3

102.4

85.7

200.0

8

22.2

11.900

5

279.4

34.9

185.7

177.8

141.2

128.3

98.4

234.9

8

22.2

16.00

6

317.5

36.5

215.9

206.4

168.4

154.2

98.4

269.9

12

22.2

20.200

 
     
 
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