AWWA C207 CLASS D SLIP ON HUB FLANGE

ANSI/ C207-94: “ Standard for Steel for Waterworks Service-Sizes 4 In. Through 144 In.”, and ANSI B16.5-1981: “ Flanges and Flanged ”.

Standards & Types:
1) AWWA C207 CLASS D RING .
2) AWWA C207 CLASS D BLIND FLANGE.

Material:
CARBON STEEL: , Q235B.
STAINLESS STEEL: 304, 304L, 316, 316L, 1.4404, 1.4306, 1.4307.

Surface Antirust:

  • Surface antirust 1: Antirust light oil
  • Surface antirust 2: Black paint coating
  • Surface antirust 3: Yellow paint coating
  • Surface antirust 4: Galnavized (Hot galvanized or Cold galvanized or Electro Galvanized)

Surface Finish:

  • Surface finish 1: Stock finish
  • Surface finish 2: Sprial serrated
  • Surface finish 3: Two or three grooves (Water Lines)
  • Surface finish 4: Smooth finish

ANSI covers numbered class flanges from 150 to 2500, and AWWA standards encompass lettered flange classes B, E, F, and the commonly used class D connection. AWWA provides ratings for a much broader range of nominal pipe sizes (3″-144″) than ANSI provides (1/2″-24″).

Flange Dimensions & Approximate Masses
Nom Size
 
OD
Thickness
 
Bore
Drilling
Weight
Slip-On
Blind
Bolt Circle
Hole Dia
No. Holes
Slip-on
Blind
A
T
B
C
 
 
 
 
4
9.00
0.625
0.625
4.57
7.50
0.750
8
8
11
5
10.00
0.625
0.625
5.66
8.50
0.875
8
9
14
6
11.00
0.688
0.688
6.72
9.50
0.875
8
11
19
8
13.50
0.688
0.688
8.72
11.75
0.875
8
15
28
10
16.00
0.688
0.688
10.88
14.25
1.000
12
19
39
12
19.00
0.688
0.719
12.88
17.00
1.000
12
28
58
14
21.00
0.688
0.791
14.19
18.75
1.125
12
34
78
16
23.50
0.688
0.892
16.19
21.25
1.125
16
41
110
18
25.00
0.688
0.950
18.19
22.75
1.250
16
41
132
20
27.50
0.688
1.040
20.19
25.00
1.250
20
49
175
22
29.50
0.750
1.132
22.19
27.25
1.375
20
57
219
24
32.00
0.750
1.216
24.19
29.50
1.375
20
67
277
26
34.25
0.812
1.307
26.19
31.75
1.375
24
80
341
28
36.50
0.875
1.398
28.19
34.00
1.375
28
94
414
30
38.75
0.875
1.477
30.19
36.00
1.375
28
105
493
32
41.75
0.936
1.581
32.19
38.50
1.625
28
132
613
34
43.75
0.938
1.661
34.19
40.50
1.625
32
137
707
36
46.00
1.000
1.751
36.19
42.75
1.625
32
161
824
38
48.75
1.000
1.853
38.19
45.25
1.625
32
185
980
40
50.75
1.000
1.933
40.19
47.25
1.625
36
193
1108
42
53.00
1.125
2.023
42.19
49.50
1.625
36
234
1264
44
55.25
1.125
2.114
44.19
51.75
1.625
40
249
1436
46
57.25
1.125
2.194
46.19
53.75
1.625
40
260
1600
48
59.50
1.250
2.285
48.19
56.00
1.625
44
306
1800
50
61.75
1.250
2.377
50.19
58.25
1.875
44
317
2017
52
64.00
1.250
2.468
52.19
60.50
1.875
44
339
2249
54
66.25
1.375
2.559
54.19
62.75
1.875
44
397
2499
60
73.00
1.500
2.820
60.19
69.25
1.875
52
508
3344
66
80.00
1.625
3.092
66.19
76.00
1.875
52
664
4403
72
86.50
1.750
3.353
72.19
82.50
1.875
60
802
5582
78
93.00
2.000
……..
78.19
89.00
2.125
64
1000
……..
84
99.75
2.000
……..
84.19
95.50
2.125
64
1145
……..
90
106.50
2.250
……..
90.19
102.00
2.438
68
1404
……..
96
113.25
2.250
……..
96.19
108.50
2.438
68
1586
……..
102
120.00
2.500
……..
102.19
114.50
2.688
72
1912
……..
108
126.75
2.500
……..
108.19
120.75
2.688
72
2136
……..
114
133.50
2.750
……..
114.19
126.75
2.938
76
2525
……..
120
140.25
2.750
……..
120.19
132.75
2.938
76
2795
……..
126
147.00
3.000
……..
126.19
139.25
3.188
80
3252
……..
132
153.75
3.000
……..
132.19
145.75
3.188
80
3572
……..
138
160.50
3.250
……..
138.19
152.00
3.438
84
4101
……..
144
167.25
3.250
……..
144.19
158.25
3.438
84
4475
……..
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