Class 300, Welding Neck, Slip-On and Threaded
B16.47, Ser. A
ASME B16.5 Flanges
Weld Neck, Slip-On, Socket Weld, Threaded, Lap Joint, Blind.
1/2" - 24" Class 150, 300, 400, 600, 900, 1500 and 2500
NOTE: Reducing flanges are available in all types and pressures.
To order a reducing flange, state the smaller size first, then the
outside diameter of the larger size. Example: 1" X 71⁄2" O.D.
150 SO RF reducing would be a 3" X 1" Slip-on, Raised Faced
Reducing. Or, to simplify, just state the actual pipe sizes in order
of larger to smaller. Example: 3" X 1" Slip-on, Raised Faced,
Reducing.
Building A Stronger America By Supplying
Quality Products “Made In The U.S.A.”
Revised 1-99
3
Class 150
ASME B16.5
Common Dimensions
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
Outside
Dia.
O
3.50
3.88
4.25
4.62
5.00
6.00
7.00
7.50
8.50
9.00
10.00
11.00
13.50
16.00
19.00
21.00
23.50
25.00
27.50
32.00
Thk.
C
Raised
Face
Dia.
R
Fillet
Radius
r
0.44
0.50
0.56
0.62
0.69
0.75
0.88
0.94
0.94
0.94
0.94
1.00
1.12
1.19
1.25
1.38
1.44
1.56
1.69
1.88
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
5.50
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
0.12
0.12
0.12
0.19
0.25
0.31
0.31
0.38
0.38
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Length Thru Hub
Slip-on
B2
Lap
Joint
B3
Welding
Neck
Y1
Slip-on
Socket
Y2
Lap
Joint
Y3
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.60
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
0.90
1.11
1.38
1.72
1.97
2.46
2.97
3.60
4.10
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
1.88
2.06
2.19
2.25
2.44
2.50
2.75
2.75
2.81
3.00
3.50
3.50
4.00
4.00
4.50
5.00
5.00
5.50
5.69
6.00
0.62
0.62
0.69
0.81
0.88
1.00
1.12
1.19
1.25
1.31
1.44
1.56
1.75
1.94
2.19
2.25
2.50
2.69
2.88
3.25
0.62
0.62
0.69
0.81
0.88
1.00
1.12
1.19
1.25
1.31
1.44
1.56
1.75
1.94
2.19
3.12
3.44
3.81
4.06
4.38
Revised 1-99
4
Class 150
ASME B16.5
(1/2" TO 3" ONLY)
Drilling
Min.
Thread
Length
T
Depth
of
Socket
D
Dia.
Hub at
Bevel
A
Hub
Dia.
X
0.62
0.62
0.69
0.81
0.88
1.00
1.12
1.19
1.25
1.31
1.44
1.56
1.75
1.94
2.19
2.25
2.50
2.69
2.88
3.25
0.38
0.44
0.50
0.56
0.62
0.69
0.75
0.81
0.88
0.94
0.94
1.06
1.25
1.31
1.56
1.63
1.75
1.94
2.13
2.50
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
24.00
1.19
1.50
1.94
2.31
2.56
3.06
3.56
4.25
4.81
5.31
6.44
7.56
9.69
12.00
14.38
15.75
18.00
19.88
22.00
26.12
Approx. Weight
Bolt
Circle
Dia.
Holes
No.
Holes
Welding
Neck
Slip-on
Thrd.
Sock. W.
Lap
Joint
Blind
2.38
2.75
3.12
3.50
3.88
4.75
5.50
6.00
7.00
7.50
8.50
9.50
11.75
14.25
17.00
18.75
21.25
22.75
25.00
29.50
0.62
0.62
0.62
0.62
0.62
0.75
0.75
0.75
0.75
0.75
0.88
0.88
0.88
1.00
1.00
1.12
1.12
1.25
1.25
1.38
4
4
4
4
4
4
4
4
8
8
8
8
8
12
12
12
16
16
20
20
2
2
3
3
4
6
8
10
12
15
19
24
39
52
80
110
140
150
180
260
1
2
2
3
3
5
7
8
11
13
15
19
30
43
64
90
98
130
165
220
1
2
2
3
3
5
7
8
11
13
15
19
30
43
64
105
140
160
195
275
1
2
2
3
4
5
7
9
13
17
20
26
45
70
110
140
180
220
285
430
Nominal
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
Revised 1-99
/4
/2
1
1
/2
1
/2
1
5
Class 300
ASME B16.5
Common Dimensions
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
Outside
Dia.
O
3.75
4.62
4.88
5.25
6.12
6.50
7.50
8.25
9.00
10.00
11.00
12.50
15.00
17.50
20.50
23.00
25.50
28.00
30.50
36.00
Thk.
C
Raised
Face
Dia.
R
Fillet
Radius
r
0.56
0.62
0.69
0.75
0.81
0.88
1.00
1.12
1.19
1.25
1.38
1.44
1.62
1.88
2.00
2.12
2.25
2.38
2.50
2.75
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
5.50
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
0.12
0.12
0.12
0.19
0.25
0.31
0.31
0.38
0.38
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Length Thru Hub
Slip-on
B2
Lap
Joint
B3
Welding
Neck
Y1
Slip-on
Socket
Y2
Lap
Joint
Y3
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.57
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
0.90
1.11
1.38
1.72
1.97
2.46
2.97
3.60
4.10
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
2.06
2.25
2.44
2.56
2.69
2.75
3.00
3.12
3.19
3.38
3.88
3.88
4.38
4.62
5.12
5.62
5.75
6.25
6.38
6.62
0.88
1.00
1.06
1.06
1.19
1.31
1.50
1.69
1.75
1.88
2.00
2.06
2.44
2.62
2.88
3.00
3.25
3.50
3.75
4.19
0.88
1.00
1.06
1.06
1.19
1.31
1.50
1.69
1.75
1.88
2.00
2.06
2.44
3.75
4.00
4.38
4.75
5.12
5.50
6.00
Revised 1-99
6
Class 300
ASME B16.5
(1/2" TO 3" ONLY)
Drilling
Min.
Thread
Length
T
0.62
0.62
0.69
0.81
0.88
1.12
1.25
1.25
1.44
1.44
1.69
1.81
2.00
2.19
2.38
2.50
2.69
2.75
2.88
3.25
Dia.
Counter
Bore Thd.
Q
Depth
of
Socket
D
Dia.
Hub at
Bevel
A
Hub
Dia.
X
0.93
1.14
1.41
1.75
1.98
2.50
3.00
3.63
4.13
4.63
5.69
6.75
8.75
10.88
12.94
14.19
16.19
18.19
20.19
24.19
0.38
0.44
0.50
0.56
0.62
0.69
0.75
0.81
0.88
0.94
0.94
1.06
1.25
1.31
1.56
1.62
1.75
1.94
2.12
2.50
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
1.50
1.88
2.12
2.50
2.75
3.31
3.94
4.62
5.25
5.75
7.00
8.12
10.25
12.62
14.75
16.75
19.00
21.00
23.12
27.62
Approx. Weight
Bolt
Circle
Dia.
Holes
No.
Holes
Welding
Neck
Slip-on
Thrd.
Sock. W.
2.62
3.25
3.50
3.88
4.50
5.00
5.88
6.62
7.25
7.88
9.25
10.62
13.00
15.25
17.75
20.25
22.50
24.75
27.00
32.00
0.62
0.75
0.75
0.75
0.88
0.75
0.88
0.88
0.88
0.88
0.88
0.88
1.00
1.12
1.25
1.25
1.38
1.38
1.38
1.62
4
4
4
4
4
8
8
8
8
8
8
12
12
16
16
20
20
24
24
24
2
3
4
5
7
9
12
15
18
25
32
42
67
91
140
180
250
320
400
580
2
3
3
4
6
7
10
13
17
22
28
39
58
81
115
165
190
250
315
475
Lap
Joint
2
3
3
4
6
7
10
13
17
22
28
39
58
91
140
190
250
295
370
550
Blind
2
3
3
4
6
8
12
16
21
27
35
50
81
124
185
250
295
395
505
790
Nominal
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
Revised 1-99
/4
/2
1
1
/2
1
/2
1
7
Class 400
ASME B16.5
Common Dimensions
4
5
6
8
10
12
14
16
18
20
24
Outside
Dia.
O
10.00
11.00
12.50
15.00
17.50
20.50
23.00
25.50
28.00
30.50
36.00
Thk.
C
1.38
1.50
1.62
1.88
2.12
2.25
2.38
2.50
2.62
2.75
3.00
Raised
Face
Dia.
R
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
Fillet
Radius
r
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Slip-on
B2
4.57
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
Length Thru Hub
Lap
Joint
B3
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
Welding
Neck
Y1
3.50
4.00
4.06
4.62
4.88
5.38
5.88
6.00
6.50
6.62
6.88
Slip-on
Socket
Y2
Lap
Joint
Y3
SIZES 1/2" THRU 31/2"
2.00
2.00
2.12
2.12
2.25
2.25
2.69
2.69
2.88
4.00
3.12
4.25
3.31
4.62
3.69
5.00
3.88
5.38
4.00
5.75
4.50
6.62
Thickness and length through hub do not include 1/4" raised face.
Revised 1-99
8
Class 400
ASME B16.5
(1/2" TO 3" ONLY)
Drilling
Min.
Thread
Length
T
Dia.
Hub at
Bevel
A
Hub
Dia.
X
Bolt
Circle
ARE IDENTICAL WITH CLASS 600
1.44
4.50
5.75
7.88
1.69
5.56
7.00
9.25
1.81
6.63
8.12
10.62
2.00
8.63
10.25
13.00
2.19
10.75
12.62
15.25
2.38
12.75
14.75
17.75
2.50
14.00
16.75
20.25
2.69
16.00
19.00
22.50
2.75
18.00
21.00
24.75
2.88
20.00
23.12
27.00
3.25
24.00
27.62
32.00
Approx. Weight
Dia.
Holes
No.
Holes
1.00
1.00
1.00
1.12
1.25
1.38
1.38
1.50
1.50
1.62
1.88
8
8
12
12
16
16
20
20
24
24
24
Welding
Neck
35
43
57
89
125
175
230
295
350
425
620
Slip-on
Thrd.
Sock. W.
Lap
Joint
Blind
Nominal
Size
26
31
44
67
91
130
180
235
285
345
510
25
29
42
64
110
150
205
260
315
385
570
33
44
61
100
155
225
290
370
455
587
890
4
5
6
8
10
12
14
16
18
20
24
See 300 Class dimensions for dimensions “Q” and “D”.
Revised 1-99
9
Class 600
ASME B16.5
Common Dimensions
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
Outside
Dia.
O
Thk.
C
Raised
Face
Dia.
R
3.75
4.62
4.88
5.25
6.12
6.50
7.50
8.25
9.00
10.75
13.00
14.00
16.50
20.00
22.00
23.75
27.00
29.25
32.00
37.00
0.56
0.62
0.69
0.81
0.88
1.00
1.12
1.25
1.38
1.50
1.75
1.88
2.19
2.50
2.62
2.75
3.00
3.25
3.50
4.00
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
5.50
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
Fillet
Radius
r
0.12
0.12
0.12
0.19
0.25
0.31
0.31
0.38
0.38
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Length Thru Hub
Slip-on
B2
Lap
Joint
B3
Welding
Neck
Y1
Slip-on
Socket
Y2
Lap
Joint
Y3
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.07
4.57
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
0.90
1.11
1.38
1.72
1.97
2.46
2.97
3.60
4.10
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
2.06
2.25
2.44
2.62
2.75
2.88
3.12
3.25
3.38
4.00
4.50
4.62
5.25
6.00
6.12
6.50
7.00
7.25
7.50
8.00
0.88
1.00
1.06
1.12
1.25
1.44
1.62
1.81
1.94
2.12
2.38
2.62
3.00
3.38
3.62
3.69
4.19
4.62
5.00
5.50
0.88
1.00
1.06
1.12
1.25
1.44
1.62
1.81
1.94
2.12
2.38
2.62
3.00
4.38
4.62
5.00
5.50
6.00
6.50
7.25
Thickness and length through hub do not include 1/4" raised face.
Revised 1-99
10
Class 600
ASME B16.5
(1/2" TO 3" ONLY)
Drilling
Min.
Thread
Length
T
0.62
0.62
0.69
0.81
0.88
1.12
1.25
1.38
1.56
1.62
1.88
2.00
2.25
2.56
2.75
2.88
3.06
3.12
3.25
3.62
Depth
of
Socket
D
0.38
0.44
0.50
0.56
0.62
0.69
0.75
0.81
0.88
0.94
0.94
1.06
1.25
1.31
1.56
1.62
1.75
1.94
2.12
2.50
Dia.
Hub at
Bevel
A
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.00
4.50
5.56
6.62
8.62
10.75
12.75
14.00
16.00
18.00
20.00
24.00
Hub
Dia.
X
1.50
1.88
2.12
2.50
2.75
3.31
3.94
4.62
5.25
6.00
7.44
8.75
10.75
13.50
15.75
17.00
19.50
21.50
24.00
28.25
Bolt
Circle
2.62
3.25
3.50
3.88
4.50
5.00
5.88
6.62
7.25
8.50
10.50
11.50
13.75
17.00
19.25
20.75
23.75
25.75
28.50
33.00
Dia.
Holes
0.62
0.75
0.75
0.75
0.88
0.75
0.88
0.88
1.00
1.00
1.12
1.12
1.25
1.38
1.38
1.50
1.62
1.75
1.75
2.00
Approx. Weight
No.
Holes
4
4
4
4
4
8
8
8
8
8
8
12
12
16
20
20
20
20
24
24
Welding
Neck
2
4
4
6
8
12
18
23
26
42
68
81
120
190
225
280
390
475
590
830
Slip-on
Thrd.
Sock. W.
Lap
Joint
Blind
2
3
4
5
7
9
13
16
21
37
63
80
115
170
200
230
330
400
510
730
2
3
4
5
7
9
12
15
20
36
61
78
110
170
200
250
365
435
570
810
2
3
4
5
8
10
15
20
29
41
68
86
140
230
295
355
495
630
810
1250
Nominal
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
See 300 Class dimensions for dimensions “Q” and “D”.
Revised 1-99
11
Class 900
ASME B16.5
Common Dimensions
3
4
5
6
8
10
12
14
16
18
20
24
Outside
Dia.
O
9.50
11.50
13.75
15.00
18.50
21.50
24.00
25.25
27.75
31.00
33.75
41.00
Thk.
C
1.50
1.75
2.00
2.19
2.50
2.75
3.12
3.38
3.50
4.00
4.25
5.50
Raised
Face
Dia.
R
5.00
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
Fillet
Radius
r
0.38
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Slip-on
B2
3.57
4.57
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
Length Thru Hub
Lap
Joint
B3
3.60
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
Welding
Neck
Y1
4.00
4.50
5.00
5.50
6.38
7.25
7.88
8.38
8.50
9.00
9.75
11.50
Slip-on
Socket
Y2
Lap
Joint
Y3
SIZES 1/2" THRU 21/2"
2.12
2.12
2.75
2.75
3.13
3.13
3.38
3.38
4.00
4.50
4.25
5.00
4.62
5.62
5.12
6.12
5.25
6.50
6.00
7.50
6.25
8.25
8.00
10.50
Thickness and length through hub do not include 1/4" raised face.
Revised 8-98
1-99
12
Class 900
ASME B16.5
(1/2" TO 3" ONLY)
Drilling
Min.
Thread
Length
T
Dia.
Hub at
Bevel
A
Hub
Dia.
X
Bolt
Circle
ARE IDENTICAL WITH CLASS 600
1.62
3.50
5.00
7.50
1.88
4.50
6.25
9.25
2.12
5.56
7.50
11.00
2.25
6.63
9.25
12.50
2.50
8.63
11.75
15.50
2.81
10.75
14.50
18.50
3.00
12.75
16.50
21.00
3.25
14.00
17.75
22.00
3.38
16.00
20.00
24.25
3.50
18.00
22.25
27.00
3.62
20.00
24.50
29.50
4.00
24.00
29.50
35.50
Approx. Weight
Dia.
Holes
No.
Holes
Welding
Neck
Slip-on
Thrd.
Sock. W.
1.00
1.25
1.38
1.25
1.50
1.50
1.50
1.62
1.75
2.00
2.12
2.62
8
8
8
12
12
16
20
20
20
20
20
20
31
53
86
110
175
260
325
400
495
680
830
1500
26
53
83
110
170
245
325
400
425
600
730
1400
Lap
Joint
Blind
25
51
81
105
190
275
370
415
465
650
810
1550
29
54
87
115
200
290
415
520
600
850
1075
2025
Nominal
Size
3
4
5
6
8
10
12
14
16
18
20
24
See 300 Class dimensions for dimensions “Q” and “D”.
Revised 1-99
13
Class 1500
ASME B16.5
Common Dimensions
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
14
16
18
20
24
Outside
Dia.
O
4.75
5.12
5.88
6.25
7.00
8.50
9.62
10.50
12.25
14.75
15.50
19.00
23.00
26.50
29.50
32.50
36.00
38.75
46.00
Thk.
C
Raised
Face
Dia.
R
Fillet
Radius
r
0.88
1.00
1.12
1.12
1.25
1.50
1.63
1.88
2.12
2.88
3.25
3.62
4.25
4.88
5.25
5.75
6.38
7.00
8.00
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
0.12
0.12
0.12
0.19
0.25
0.31
0.31
0.38
0.44
0.44
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
0.50
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Length Thru Hub
Slip-on
B2
Lap
Joint
B3
Welding
Neck
Y1
Slip-on
Socket
Y2
Lap
Joint
Y3
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.57
5.66
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
24.25
0.90
1.11
1.38
1.72
1.97
2.46
2.97
3.60
4.60
5.69
6.75
8.75
10.92
12.92
14.18
16.19
18.20
20.25
24.25
2.38
2.75
2.88
2.88
3.25
4.00
4.12
4.62
4.88
6.12
6.75
8.38
10.00
11.12
11.75
12.25
12.88
14.00
16.00
1.25
1.38
1.62
1.62
1.75
2.25
2.50
2.88
3.56
4.12
4.69
5.62
6.25
7.12
.—
.—
.—
.—
.—
1.25
1.38
1.62
1.62
1.75
2.25
2.50
2.88
3.56
4.12
4.69
5.62
7.00
8.62
9.50
10.25
10.88
11.50
13.00
Thickness and length through hub do not include 1/4" raised face.
Revised 1-99
14
Class 1500
ASME B16.5
(1/2" TO 2 1/2" ONLY)
(1/2" TO 2 1/2" ONLY)
Drilling
Min.
Thread
Length
T
Depth
of
Socket
D
Dia.
Hub at
Bevel
A
Hub
Dia.
X
0.88
1.00
1.12
1.19
1.25
1.50
1.88
2.00
2.25
2.50
2.75
3.00
3.31
3.63
.—
.—
.—
.—
.—
0.38
0.44
0.50
0.56
0.62
0.69
0.75
0.81
0.94
0.94
1.06
1.25
1.31
1.56
1.63
1.75
1.94
2.13
2.50
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.50
5.56
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
24.00
1.50
1.75
2.06
2.50
2.75
4.12
4.88
5.25
6.38
7.75
9.00
11.50
14.50
17.75
19.50
21.75
23.50
25.25
30.00
Approx. Weight
Bolt
Circle
Dia.
Holes
No.
Holes
3.25
3.50
4.00
4.38
4.88
6.50
7.50
8.00
9.50
11.50
12.50
15.50
19.00
22.50
25.00
27.75
30.50
32.75
39.00
0.88
0.88
1.00
1.00
1.12
1.00
1.12
1.25
1.38
1.62
1.50
1.75
2.00
2.12
2.38
2.62
2.88
3.12
3.62
4
4
4
4
4
8
8
8
8
8
12
12
12
16
16
16
16
16
16
Welding
Neck
5
6
9
10
13
25
36
48
73
130
165
275
455
690
940
1250
1625
2050
3325
Slip-on
Thrd.
Sock. W.
4
5
8
9
12
25
36
48
73
130
165
260
435
580
—
—
—
—
—
Lap
Joint
Blind
4
5
8
9
12
25
35
47
75
140
170
285
485
630
890
1150
1475
1775
2825
4
6
8
9
13
25
35
48
73
140
160
300
510
690
975
1300
1750
2225
3625
Nominal
Size
/2
/4
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
14
16
18
20
24
1
3
See 300 Class dimensions for dimensions “Q” and “D”.
Revised 1-99
15
Class 2500
ASME B16.5
Common Dimensions
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
Outside
Dia.
O
5.25
5.50
6.25
7.25
8.00
9.25
10.50
12.00
14.00
16.50
19.00
21.75
26.50
30.00
Thk.
C
Raised
Face
Dia.
R
Fillet
Radius
r
1.19
1.25
1.38
1.50
1.75
2.00
2.25
2.62
3.00
3.62
4.25
5.00
6.50
7.25
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
6.19
7.31
8.50
10.62
12.75
15.00
0.12
0.12
0.12
0.19
0.25
0.31
0.31
0.38
0.44
0.44
0.50
0.50
0.50
0.50
Class 2500 Slip-Ons are not included in ASME B16.5 specifications.
Thickness and length through hub do not include 1/4" raised face.
Welding
Neck
Socket
B1
To be specified by purchaser.
Nominal
Size
Bore
Length Thru Hub
Slip-on
B2
Lap
Joint
B3
0.88
1.09
1.36
1.70
1.95
2.44
2.94
3.57
4.57
5.66
6.72
8.72
10.88
12.88
0.90
1.11
1.38
1.72
1.97
2.46
2.97
3.60
4.60
5.69
6.75
8.75
10.92
12.92
Welding
Neck
Y1
2.88
3.12
3.50
3.75
4.38
5.00
5.62
6.62
7.50
9.00
10.75
12.50
16.50
18.25
Slip-on
Socket
Y2
Lap
Joint
Y3
1.56
1.69
1.88
2.06
2.38
2.75
3.12
3.62
4.25
5.12
6.00
7.00
9.00
10.00
1.56
1.69
1.88
2.06
2.38
2.75
3.12
3.62
4.25
5.12
6.00
7.00
9.00
10.00
Revised 1-99
16
Class 2500
ASME B16.5
Drilling
Min.
Thread
Length
T
Dia.
Hub at
Bevel
A
1.12
1.25
1.38
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.75
4.25
4.75
0.84
1.05
1.32
1.66
1.90
2.38
2.88
3.50
4.50
5.56
6.63
8.63
10.75
12.75
Hub
Dia.
X
1.69
2.00
2.25
2.88
3.12
3.75
4.50
5.25
6.50
8.00
9.25
12.00
14.75
17.38
Approx. Weight
Bolt
Circle
Dia.
Holes
No.
Holes
Welding
Neck
Slip-on
Thrd.
Sock. W.
3.50
3.75
4.25
5.12
5.75
6.75
7.75
9.00
10.75
12.75
14.50
17.25
21.25
24.38
0.88
0.88
1.00
1.12
1.25
1.12
1.25
1.38
1.62
1.88
2.12
2.12
2.62
2.88
4
4
4
4
4
8
8
8
8
8
8
12
12
12
7
8
12
17
25
42
52
94
145
245
380
580
1075
1525
7
8
11
16
22
38
55
83
125
210
325
485
930
1100
Lap
Joint
Blind
7
8
11
16
22
37
53
80
120
205
315
470
900
1100
7
8
11
17
23
39
56
86
135
225
345
530
1025
1300
Nominal
Size
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
See 300 Class dimensions for dimensions “Q” and “D”.
Revised 1-99
17
ASME B16.47 Ser. A, Ser. B
INDUSTRY STANDARD
and AWWA Flanges
Weld Neck, Slip-On, Blind.
Class 150 to Class 900
The following section is in order by pressure class due to the
overlapping dimensions of some standards.
Simply turn to the pressure class required and find the
dimensional standard of your choice.
Revised 1-99
18
Class 75
B16.47, Ser. B
(formerly API-605)
Thickness
C
Outside
Dia.
O
Welding
Neck
Blind
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
30.00
32.00
34.00
36.00
38.00
40.69
42.69
44.69
46.69
49.25
51.25
53.25
55.25
57.38
59.38
62.00
64.00
66.00
1.31
1.31
1.31
1.38
1.38
1.44
1.50
1.50
1.56
1.69
1.75
1.81
1.88
1.88
1.94
2.00
2.06
2.19
1.31
1.31
1.31
1.44
1.50
1.67
1.75
1.75
1.88
1.94
2.00
2.12
2.18
2.25
2.38
2.44
2.50
2.62
Fillet
Radius
r
27.75
29.75
31.75
33.75
35.75
38.00
40.00
42.00
44.00
46.25
48.25
50.25
52.25
54.25
56.25
58.50
60.50
62.50
0.31
0.31
0.31
0.31
0.31
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.44
0.44
0.44
Bore
B
To be specified by purchaser.
Nominal
Size
Raised
Face
Dia.
R
Length
Thru
Hub
Y
Dia.
Hub
at
Bevel
A
Hub
Dia.
X
2.31
2.44
2.56
2.75
2.88
3.38
3.50
3.62
3.75
4.12
4.25
4.38
4.56
4.75
4.94
5.31
5.44
5.69
26.06
28.06
30.06
32.06
34.06
36.06
38.06
40.06
42.06
44.06
46.06
48.06
50.06
52.06
54.06
56.06
58.06
60.06
26.62
28.62
30.62
32.62
34.62
36.81
38.81
40.81
42.81
44.88
46.88
48.88
50.94
52.94
55.00
57.12
59.12
61.12
Revised 1-99
19
Class 75
B16.47, Ser. B
Drilling
Approx. Weight
Nominal
Size
Bolt
Circle
Dia.
Holes
No.
Holes
Welding
Neck
Blind
28.50
30.50
32.50
34.50
36.50
39.06
41.06
43.06
45.06
47.38
49.38
51.38
53.38
55.50
57.50
59.88
61.88
63.88
0.75
0.75
0.75
0.75
0.75
0.88
0.88
0.88
0.88
1.00
1.00
1.00
1.00
1.00
1.00
1.12
1.12
1.12
36
40
44
48
52
40
40
44
48
36
40
44
44
48
48
40
44
44
80
80
90
105
110
145
160
170
185
230
245
270
290
310
340
400
430
475
225
290
330
390
430
518
595
760
895
1065
1185
1315
1505
1665
1840
2110
2300
2500
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Revised 1-99
20
Class 75
INDUSTRY STANDARD
Thickness
C
Nominal
Size
Outside
Dia.
O
SlipOn
Blind
26
28
30
32
34
36
42
48
54
60
66
72
33.00
35.00
37.00
39.50
41.50
43.50
50.00
56.00
62.50
68.50
75.50
81.50
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.38
1.63
1.75
2.00
1.25
1.38
1.38
1.50
1.63
1.63
1.88
2.13
2.38
2.63
2.88
3.13
O.D.
Raised
Face
R
Dia.
at Base
of Hub
X
Bore
B
30.00
32.00
34.00
36.25
38.25
40.25
46.50
52.50
59.00
65.00
71.63
77.63
28.50
30.50
32.50
34.63
36.63
38.63
44.75
50.75
57.25
63.25
69.50
75.50
26.25
28.25
30.25
32.25
34.25
36.25
42.25
48.25
54.25
60.25
66.25
72.25
Length
Thru
Hub
Y
2.25
2.25
2.25
2.50
2.50
2.50
2.75
2.88
3.13
3.63
4.00
4.50
Revised 1-99
21
Class 75
INDUSTRY STANDARD
Drilling
Bolt
Circle
Dia.
31.00
33.00
35.00
37.38
39.38
41.38
47.75
53.75
60.25
66.25
73.00
79.00
Dia.
Holes
1.00
1.00
1.00
1.13
1.13
1.13
1.25
1.25
1.25
1.25
1.38
1.38
Approx. Weight
No.
Holes
SlipOn
Blind
32
36
36
40
40
44
48
56
68
72
72
80
120
140
150
170
180
190
235
270
335
450
590
730
290
360
405
500
600
660
1000
1450
2000
2675
3550
4500
Nominal
Size
26
28
30
32
34
36
42
48
54
60
66
72
Revised 1-99
22
Class 75
INDUSTRY STANDARD
26
28
30
32
34
36
42
48
54
60
66
72
Outside
Dia.
O
31.50
33.50
35.50
38.25
40.25
42.25
49.00
55.00
61.25
67.25
74.00
80.00
Welding
Neck
1.15
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.38
1.63
1.88
2.25
Blind
1.25
1.25
1.38
1.50
1.50
1.63
1.88
2.13
2.38
2.63
2.88
3.13
O.D.
Raised
Face
R
28.63
30.63
32.63
35.00
37.00
39.00
45.50
51.50
57.75
63.75
70.13
76.13
Dia.
at Base
of Hub
X
27.13
29.13
31.13
33.38
35.38
37.38
43.75
49.75
56.00
62.00
68.00
74.00
Bore
B
To be specified by purchaser.
Nominal
Size
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
3.00
3.00
3.00
3.25
3.25
3.25
3.50
3.75
4.00
4.38
4.88
5.25
To be specified by purchaser.
Thickness
C
Revised 1-99
23
Class 75
INDUSTRY STANDARD
Drilling
Bolt
Circle
29.63
31.63
33.63
36.13
38.13
40.13
46.75
52.75
59.00
65.00
71.50
77.50
Dia.
Holes
1.00
1.00
1.00
1.13
1.13
1.13
1.25
1.25
1.25
1.25
1.38
1.38
Approx. Weight
No.
Holes
Welding
Neck
Blind
32
36
36
36
40
40
48
52
64
72
72
80
98
105
110
140
150
160
210
240
310
400
560
700
265
300
370
470
520
620
970
1375
1925
2575
3400
4350
Nominal
Size
26
28
30
32
34
36
42
48
54
60
66
72
Revised 1-99
24
Class 125 LW, AWWA C207 CLASSES B, D
Thickness
C
Nominal
Size
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
84
96
Outside
Dia.
O
11.00
13.50
16.00
19.00
21.00
23.50
25.00
27.50
29.50
32.00
34.25
36.50
38.75
41.75
43.75
46.00
48.75
50.75
53.00
55.25
57.25
59.50
61.75
64.00
66.25
73.00
80.00
86.50
99.75
113.25
Hub Dia.
X
Bore
Length Thru Hub
Ring
Slip-On
125 LW,
B, D
B
D
0.56
0.56
0.68
0.68
0.75
0.75
0.75
0.75
1.00
1.00
1.00
1.00
1.00
1.13
1.13
1.13
1.13
1.13
1.25
1.25
1.25
1.38
1.38
1.38
1.38
1.50
1.50
1.50
1.75
2.00
0.69
0.69
0.69
0.69
0.69
0.69
0.69
0.69
0.75
0.75
0.81
0.88
0.88
0.94
0.94
1.00
1.00
1.00
1.13
1.13
1.13
1.25
1.25
1.25
1.33
1.50
1.63
1.75
2.00
2.25
0.69
0.69
0.69
0.81
0.94
1.00
1.06
1.13
1.19
1.25
1.31
1.31
1.38
1.50
1.50
1.63
1.63
1.63
1.75
1.75
1.75
1.75
2.00
2.00
2.13
2.25
2.50
2.63
2.75
3.00
Y2
X
7.56
9.68
12.00
14.38
15.75
18.00
19.88
22.00
24.25
26.13
28.50
30.50
32.50
34.75
36.75
38.75
40.75
43.00
45.00
47.00
49.00
51.00
53.00
55.00
57.00
63.00
69.00
75.00
87.50
100.00
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
22.22
24.25
26.25
28.25
30.25
32.25
34.25
36.25
38.25
40.25
42.25
44.25
46.25
48.25
50.25
52.25
54.25
60.25
66.25
72.25
84.25
96.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.25
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
2.25
2.25
2.50
2.50
2.50
2.50
2.75
2.75
2.75
3.00
3.25
Revised 1-99
25
Class 125 LW, AWWA C207 CLASSES B, D
Drilling
Bolt Hole Dia.
Bolt
Circle
125 LW
D
B
9.50
11.75
14.25
17.00
18.75
21.25
22.75
25.00
27.25
29.50
31.75
34.00
36.00
38.50
40.50
42.75
45.25
47.25
49.50
51.75
53.75
56.00
58.25
60.50
62.75
69.25
76.00
82.50
95.50
108.50
Approx. Weight
/4
/4
3
/4
3
/4
7
/8
7
/8
7
/8
7
/8
7
/8
7
/8
7
/8
7
/8
3
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
/8
/8
1
/8
1
/8
1
/4
1
/4
3
/8
3
/8
3
/8
3
/8
5
/8
7
/8
1
1
0.88
0.88
1.00
1.00
1.13
1.13
1.25
1.25
1.38
1.38
1.38
1.38
1.38
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.88
1.88
1.88
1.88
1.88
1.88
2.13
2.38
No.
Holes
8
8
12
12
12
16
16
20
20
20
24
28
28
28
32
32
32
36
36
40
40
44
44
44
44
52
52
60
64
68
Slip-On
125 LW,
B&D
13
18
26
42
44
58
59
69
76
115
125
140
150
205
215
235
265
280
330
350
365
425
450
475
500
640
750
850
1225
1725
Ring
Size
B
11
14
20
30
36
43
45
50
60
70
85
100
110
145
150
175
200
205
250
265
275
325
340
360
420
535
700
840
1200
1665
Nominal
Size
D
12
15
20
33
50
60
65
80
90
110
130
145
165
210
220
265
300
315
365
385
400
430
500
540
615
760
1025
1200
1575
2125
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
84
96
Revised 1-99
26
Class 125 & AWWA C207 CLASS E
Nominal
Size
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
84
96
Outside
Dia.
O
11.00
13.50
16.00
19.00
21.00
23.50
25.00
27.50
29.50
32.00
34.25
36.50
38.75
41.75
43.75
46.00
48.75
50.75
53.00
55.25
57.25
59.50
61.75
64.00
66.25
73.00
80.00
86.50
99.75
113.25
C
1.00
1.13
1.19
1.25
1.38
1.44
1.56
1.68
1.81
1.88
2.00
2.06
2.13
2.25
2.31
2.38
2.38
2.50
2.63
2.63
2.68
2.75
2.75
2.88
3.00
3.13
3.38
3.50
3.88
4.25
Hub Dia.
X
X
7.56
9.68
12.00
14.38
15.75
18.00
19.88
22.00
24.25
26.13
28.50
30.75
32.75
35.00
37.00
39.25
41.75
43.75
46.00
48.00
50.00
52.25
54.25
56.50
58.75
65.25
71.50
78.50
90.50
102.75
Bore
Length Thru Hub
Welding
Neck
B1
SlipOn
B2
To be specified by purchaser.
Thickness
C
6.72
8.72
10.88
12.88
14.14
16.16
18.18
20.20
22.22
24.25
26.25
28.25
30.25
32.25
34.25
36.25
38.25
40.25
42.25
44.25
46.25
48.25
50.25
52.25
54.25
60.25
66.25
72.25
84.25
96.25
SlipOn
Y2
1.56
1.75
1.94
2.19
2.25
2.50
2.68
2.88
3.13
3.25
3.38
3.44
3.50
3.63
3.68
3.75
3.75
3.88
4.00
4.00
4.06
4.13
4.13
4.25
4.38
4.50
4.88
5.00
5.38
5.75
Welding
Neck
Y1
3.50
4.00
4.00
4.50
5.00
5.00
5.50
5.69
5.88
6.00
5.00
5.06
5.13
5.25
5.31
5.38
5.38
5.50
5.63
5.63
5.68
5.75
5.75
5.88
6.00
6.13
6.38
6.50
6.88
7.25
Revised 1-99
27
Class 125 & AWWA C207 CLASS E
Drilling
Dia.
Hub
at
Bevel
A
6.63
8.63
10.75
12.75
14.00
16.00
18.00
20.00
22.00
24.00
26.00
28.00
30.00
32.00
34.00
36.00
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
60.00
66.00
72.00
84.00
96.00
Approx. Weight
Bolt
Circle
Dia.
Holes
No.
Holes
9.50
11.75
14.25
17.00
18.75
21.25
22.75
25.00
27.25
29.50
31.75
34.00
36.00
38.50
40.50
42.75
45.25
47.25
49.50
51.75
53.75
56.00
58.25
60.50
62.75
69.25
76.00
82.50
95.50
108.50
0.88
0.88
1.00
1.00
1.13
1.13
1.25
1.25
1.38
1.38
1.38
1.38
1.38
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.63
1.88
1.88
1.88
1.88
1.88
1.88
2.13
2.38
8
8
12
12
12
16
16
20
20
20
24
28
28
28
32
32
32
36
36
40
40
44
44
44
44
52
52
60
64
68
SlipOn
19
30
43
64
85
93
120
155
175
210
235
270
305
375
400
450
530
570
650
690
730
800
830
920
1025
1250
1625
1925
2600
3275
Welding
Neck
24
39
52
80
110
140
150
180
225
255
265
295
340
410
440
495
570
620
710
750
800
870
900
1000
1100
1350
1775
2100
2825
3800
Nominal
Size
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
84
96
Revised 1-99
28
Class 150
B16.47, Ser. A
Drilling
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Outside
Dia.
O
Thickness
(Min.)
C
Raised
Face
Dia.
R
Sizes 12" thru 24" identical
34.25
2.69
29.50
36.50
2.81
31.50
38.75
2.94
33.75
41.75
3.19
36.00
43.75
3.25
38.00
46.00
3.56
40.25
48.75
3.44
42.25
50.75
3.56
44.25
53.00
3.81
47.00
55.25
4.00
49.00
57.25
4.06
51.00
59.50
4.25
53.50
61.75
4.38
55.50
64.00
4.56
57.50
66.25
4.75
59.50
68.75
4.88
62.00
71.00
5.06
64.00
73.00
5.19
66.00
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
to ASME B16.5 except when a single taper
26.62
4.75 26.00
0.38
28.62
4.94 28.00
0.44
30.75
5.38 30.00
0.44
32.75
5.69 32.00
0.44
34.75
5.88 34.00
0.50
36.75
6.19 36.00
0.50
39.00
6.19 38.00
0.50
41.00
6.44 40.00
0.50
43.00
6.75 42.00
0.50
45.00
7.00 44.00
0.50
47.12
7.31 46.00
0.50
49.12
7.56 48.00
0.50
51.25
8.00 50.00
0.50
53.25
8.25 52.00
0.50
55.25
8.50 54.00
0.50
57.38
9.00 56.00
0.50
59.38
9.25 58.00
0.50
61.38
9.44 60.00
0.50
To be specified by purchaser.
Nominal
Size
Bolt
Circle
Dia.
Holes
hub is required.
31.75
1.38
34.00
1.38
36.00
1.38
38.50
1.62
40.50
1.62
42.75
1.62
45.25
1.62
47.25
1.62
49.50
1.62
51.75
1.62
53.75
1.62
56.00
1.62
58.25
1.88
60.50
1.88
62.75
1.88
65.00
1.88
67.25
1.88
69.25
1.88
No.
Holes
Approx.
Wt.
WNF
24
28
28
28
32
32
32
36
36
40
40
44
44
44
44
48
48
52
300
345
400
505
540
640
720
775
890
990
1060
1185
1270
1410
1585
1760
1915
2045
*SP-44 Class 150 blinds and Welding Neck Flanges have the same thickness.
Blinds available upon request.
Revised 1-99
29
Class 150
B16.47, Ser. B
Drilling
Outside
Dia.
O
Thickness
(Min.)
C
Raised
Face
Dia.
R
Hub
Dia.
X
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
30.94
32.94
34.94
37.06
39.56
41.62
44.25
46.25
48.25
50.25
52.81
54.81
56.81
58.81
61.00
63.00
65.94
67.94
1.62
1.75
1.75
1.81
1.94
2.06
2.12
2.19
2.31
2.38
2.44
2.56
2.69
2.75
2.81
2.88
2.94
3.00
28.00
30.00
32.00
34.00
36.25
38.25
40.25
42.50
44.50
46.50
48.62
50.75
52.75
54.75
56.75
58.75
60.75
63.00
26.94
28.94
31.00
33.06
35.12
37.19
39.25
41.31
43.38
45.38
47.44
49.50
51.50
53.56
55.62
57.69
59.69
61.81
Bore
B
To be specified by purchaser.
Nominal
Size
Length
Thru
Hub
Y
3.50
3.75
3.94
4.25
4.34
4.632
4.88
5.06
5.25
5.38
5.69
5.88
6.06
6.19
6.38
6.56
6.88
7.06
Dia.
Hub at
Bevel
A
Fillet
Radius
r
26.06
28.06
30.06
32.06
34.06
36.06
38.12
40.12
42.12
44.12
46.12
48.12
50.12
52.12
54.12
56.12
58.12
60.12
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.38
0.44
0.44
0.44
0.44
0.44
0.44
0.44
0.56
0.56
0.56
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
29.31
31.31
33.31
35.44
37.69
39.75
42.12
44.12
46.12
48.12
50.56
52.56
54.56
56.56
58.75
60.75
63.44
65.44
0.88
0.88
0.88
0.88
1.00
1.00
1.12
1.12
1.12
1.12
1.25
1.25
1.25
1.25
1.25
1.25
1.38
1.38
36
40
44
48
40
44
40
44
48
52
40
44
48
52
56
60
48
52
120
140
150
170
210
240
290
310
345
370
435
480
520
550
620
650
780
850
Blinds available upon request.
Revised 1-99
30
Class 175
INDUSTRY STANDARD
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
Outside
Dia.
O
Welding
Neck
31.50
33.50
35.75
37.75
40.25
42.25
44.25
46.25
49.00
51.00
53.00
55.00
57.00
59.50
61.50
67.50
73.50
80.00
1.38
1.38
1.38
1.38
1.50
1.50
1.75
1.75
2.00
2.00
2.00
2.25
2.25
2.63
2.63
2.75
3.13
3.63
SlipOn
1.38
1.38
1.38
1.38
1.75
1.75
2.00
2.00
2.38
2.38
2.38
2.63
2.63
3.00
3.00
3.13
4.00
5.00
Blind
1.78
2.00
2.13
2.25
2.38
2.50
2.63
2.75
2.88
3.00
3.13
3.38
3.38
3.63
3.63
4.00
4.38
4.75
Raised
Face
Dia.
R
Hub
Dia.
X
29.00
31.00
33.25
35.25
37.38
39.38
41.38
43.38
45.75
47.75
49.75
51.75
53.75
56.00
58.00
64.00
70.00
76.50
27.63
29.63
31.88
33.88
35.88
37.88
39.88
41.88
44.13
46.13
48.13
50.13
52.13
54.25
56.25
62.25
68.50
74.50
Length Thru Hub
Y
Welding
Neck
B1
To be specified by purchaser.
Nominal
Size
Bore
SlipOn
B2
26.25
28.25
30.25
32.25
34.25
36.25
38.25
40.25
42.25
44.25
46.25
48.25
50.25
52.25
54.25
60.25
66.25
72.25
3.38
3.38
3.63
3.63
3.75
3.75
4.13
4.13
4.50
4.50
4.50
4.88
4.88
5.38
5.38
5.75
6.13
6.63
2.75
2.75
2.75
2.75
3.38
3.38
3.75
4.00
4.38
4.38
4.63
4.88
4.88
5.38
5.38
5.88
6.88
8.00
Dia.
Hub at
Bevel
A
To be specified by purchaser.
Thickness
C
Notes: Sizes are nominal inside diameters of pipe or shell used with Welding Neck flanges,
Notes: and nominal outside diameters of pipe or shell used with Slip-On Flanges.
Revised 1-99
31
Class 175
INDUSTRY STANDARD
Drilling
Approx. Weight
Bolt
Circle
Dia.
Dia.
Holes
No.
Holes
29.88
31.88
34.13
36.13
38.38
40.38
42.38
44.38
46.88
48.88
50.88
52.88
54.88
57.25
59.25
65.25
74.25
77.75
0.88
0.88
0.88
0.88
1.00
1.00
1.00
1.00
1.13
1.13
1.13
1.13
1.13
1.25
1.25
1.25
1.25
1.25
28
28
36
36
36
36
36
40
40
40
40
44
44
44
44
48
56
64
Welding
Neck
120
130
150
160
195
205
245
255
340
360
375
430
450
560
580
680
830
1075
SlipOn
105
115
130
140
200
210
250
270
365
380
410
460
480
600
620
730
1000
1400
Blind
405
490
590
700
840
970
1125
1300
1500
1700
1925
2225
2400
2800
3000
4000
5175
6650
Nominal
Size
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
60
66
72
Revised 1-99
32
Class 300
B16.47, Ser. A
Thickness
C
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
Outside
Dia.
O
Sizes
38.25
40.75
43.00
45.25
47.50
50.00
46.00
48.75
50.75
53.25
55.75
57.75
60.25
62.25
65.25
67.25
69.25
71.25
WNF
BF
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
12" thru 24" identical to ASME B16.5 except when a single taper hub is required.
3.12 3.31
29.50
28.38
7.25 26.00 0.38
34.50
1.75
3.38 3.56
31.50
30.50
7.75 28.00 0.44
37.00
1.75
3.62 3.75
33.75
32.56
8.25 30.00 0.44
39.25
1.88
3.88 3.94
36.00
34.69
8.75 32.00 0.44
41.50
2.00
4.00 4.12
38.00
36.88
9.12 34.00 0.50
43.50
2.00
4.12 4.38
40.25
39.00
9.50 36.00 0.50
46.00
2.12
4.25 4.25
40.50
39.12
7.12 38.00 0.50
43.00
1.62
4.50 4.50
42.75
41.25
7.63 40.00 0.50
45.50
1.75
4.69 4.69
44.75
43.25
7.88 42.00 0.50
47.50
1.75
4.88 4.88
47.00
45.25
8.12 44.00 0.50
49.75
1.88
5.06 5.06
49.00
47.38
8.50 46.00 0.50
52.00
2.00
5.25 5.25
51.25
49.38
8.81 48.00 0.50
54.00
2.00
5.50 5.50
53.50
51.38
9.12 50.00 0.50
56.25
2.12
5.69 5.69
55.50
53.38
9.38 52.00 0.50
58.25
2.12
6.00 6.00
57.75
55.50
9.94 54.00 0.50
61.00
2.38
6.06 6.06
59.75
57.62
10.25 56.00 0.50
63.00
2.38
6.25 6.25
62.00
59.62
10.50 58.00 0.50
65.00
2.38
6.44 6.44
64.00
61.62
10.75 60.00 0.50
67.00
2.38
To be specified by purchaser.
Nominal
Size
Drilling
No.
Holes
Approx.
Wt.
WNF
28
28
28
28
28
32
32
32
32
32
28
32
32
32
28
28
32
32
605
745
870
1005
1145
1275
695
840
950
1055
1235
1380
1530
1660
2050
2155
2270
2470
Revised 1-99
33
Class 300
B16.47, Ser. B
Drilling
Outside
Dia.
O
Thickness
(Min.)
C
Raised
Face
Dia.
R
Hub
Dia.
X
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
34.12
36.25
39.00
41.50
43.62
46.12
48.12
50.12
52.50
54.50
57.50
59.50
61.50
63.50
65.88
69.50
71.94
73.94
3.50
3.50
3.69
4.06
4.06
4.06
4.38
4.56
4.69
5.00
5.06
5.06
5.44
5.62
5.38
6.06
6.06
5.94
29.00
31.00
33.25
35.50
37.50
39.75
41.75
43.88
46.00
48.00
50.00
52.25
54.25
56.25
58.25
60.50
62.75
65.00
27.62
29.75
32.00
34.00
36.12
38.00
40.00
42.00
44.00
46.19
48.38
50.31
52.38
54.44
56.50
58.81
60.94
62.94
Bore
B
To be specified by purchaser.
Nominal
Size
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
5.69
5.88
6.22
6.62
6.81
7.12
7.56
7.81
8.06
8.44
8.75
8.81
9.25
9.56
9.44
10.56
10.81
10.69
26.19
28.19
30.25
32.25
34.25
36.25
38.25
40.25
42.31
44.31
46.31
48.31
50.31
52.31
54.31
56.31
58.31
60.31
Fillet
Radius
r
0.56
0.56
0.56
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.63
0.69
0.69
0.69
Bolt
Circle
Dia.
Holes
No.
Holes
31.62
33.75
36.25
38.50
40.62
42.88
44.88
46.88
49.00
51.00
53.75
55.75
57.75
59.75
62.12
65.00
67.44
69.44
1.38
1.38
1.50
1.62
1.62
1.75
1.75
1.75
1.88
1.88
2.00
2.00
2.00
2.00
2.00
2.38
2.38
2.38
32
36
36
32
36
32
36
40
36
40
36
40
44
48
48
36
40
40
Approx.
Wt.
WNF
400
450
550
685
750
840
915
990
1135
1235
1470
1575
1710
1840
1980
2595
2770
2870
Revised 1-99
34
Class 350
INDUSTRY STANDARD
Nominal
Size
26
28
30
32
34
36
38
40
42
44
46
48
52
54
60
66
72
Outside
Dia.
O
Welding
Neck
32.75
34.75
37.00
39.00
41.00
43.75
45.75
47.75
50.00
52.75
54.75
56.75
61.50
63.50
69.50
77.00
83.00
2.50
2.50
2.63
2.75
2.88
3.13
3.13
3.25
3.50
3.75
4.25
4.25
4.25
4.50
4.50
4.00
4.00
SlipOn
2.50
2.50
2.63
2.75
2.88
3.13
3.13
3.25
3.50
3.75
4.25
4.25
.—
4.75
5.00
.—
.—
Bore
Blind
2.75
2.88
3.00
3.25
3.38
3.63
3.75
4.00
4.13
4.38
4.75
4.75
.—
.—
.—
.—
.—
Raised
Face
Dia.
R
29.50
31.50
33.75
35.75
37.75
40.25
42.25
44.25
46.50
48.88
50.88
52.88
57.25
59.25
65.25
72.38
78.38
Hub
Dia.
X
27.88
29.88
32.13
34.13
36.13
38.50
40.50
42.50
44.75
46.75
48.75
50.75
55.00
57.00
63.00
70.00
76.00
Length Thru Hub
Y
B1
B2
To be specified by purchaser.
Thickness
C
26.25
28.25
30.25
32.25
34.25
36.25
38.25
40.25
42.25
44.25
46.25
48.25
52.25
54.25
60.25
66.25
72.25
Welding
Neck
SlipOn
5.00
5.00
5.25
5.50
5.75
6.13
6.13
6.25
6.50
6.75
7.25
7.25
7.50
7.75
8.00
8.50
9.00
4.50
4.50
4.75
5.00
5.13
5.63
5.63
5.88
6.13
6.75
7.25
7.25
.—
8.25
8.50
.—
.—
Notes: Sizes are nominal inside diameters of pipe or shell used with Welding Neck Flanges,
Notes: and nominal outside diameters of pipe or shell used with Slip-On Flanges.
Notes: Diameter of hub at Bevel to be specified by purchaser.
Revised 1-99
35
Class 350
INDUSTRY STANDARD
Drilling
Approx. Weight
Bolt
Circle
Dia.
Dia.
Holes
No.
Holes
30.63
32.63
34.88
36.88
38.88
41.50
43.50
45.50
47.75
50.25
52.25
54.25
58.75
60.75
66.75
74.00
80.00
1.13
1.13
1.13
1.13
1.13
1.25
1.25
1.25
1.25
1.38
1.38
1.38
1.50
1.50
1.50
1.63
1.63
28
28
32
36
40
40
40
44
48
44
48
48
52
52
60
60
72
Welding
Neck
245
260
305
340
375
480
510
540
640
760
880
920
1025
1200
1325
1675
1850
SlipOn
225
250
295
325
355
465
490
530
620
760
880
920
—
1150
1450
—
—
Blind
580
750
890
1050
1225
1500
1700
1975
2225
2625
2950
3300
—
—
—
—
—
Nominal
Size
26
28
30
32
34
36
38
40
42
44
46
48
52
54
60
66
72
Revised 1-99
36
Class 400
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
38.25
40.75
43.00
45.25
47.50
50.00
3.50
3.75
4.00
4.25
4.38
4.50
3.88
4.12
4.38
4.56
4.81
5.06
29.50
31.50
33.75
36.00
38.00
40.25
28.62
30.81
32.94
35.00
37.18
39.38
.—
.—
.—
.—
.—
.—
28.00
30.00
32.25
34.38
36.50
38.62
27.12
29.12
31.25
33.25
35.38
37.50
B16.47 Ser B
26
28
30
32
34
36
33.50
36.00
38.25
40.75
42.75
45.50
3.50
3.75
4.00
4.25
4.38
4.69
To be specified by purchaser.
B16.47 Ser A Sizes 12" thru 24" identical to ASME B16.5 except when a single taper hub is required.
26
28
30
32
34
36
7.62
8.12
8.62
9.12
9.50
9.88
26.00
28.00
30.00
32.00
34.00
36.00
0.44
0.50
0.50
0.50
0.56
0.56
34.50
37.00
39.25
41.50
43.50
46.00
1.88
2.00
2.12
2.12
2.12
2.12
28
28
28
28
28
32
650
785
905
1065
1200
1340
5.88
6.25
6.69
7.06
7.38
7.88
26.00
28.00
30.00
32.00
34.00
36.00
0.44
0.50
0.50
0.50
0.56
0.56
30.75
33.00
35.25
37.50
39.50
42.00
1.50
1.62
1.62
1.75
1.75
1.75
28
24
28
28
32
28
360
450
530
635
690
855
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
37
Class 400
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
44.00
46.25
48.25
50.50
52.75
55.25
57.50
59.50
62.25
64.25
66.25
69.00
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
32
32
32
32
36
28
32
32
28
32
32
32
935
1090
1190
1375
1525
1790
1950
2125
2565
2710
3230
3820
47.50
50.00
52.00
54.50
56.75
59.50
61.75
63.75
67.00
69.00
71.00
74.25
4.88
5.12
5.25
5.50
5.75
6.00
6.19
6.38
6.69
6.88
7.00
7.31
4.88
5.12
5.25
5.50
5.75
6.00
6.25
6.44
6.75
6.94
7.12
7.44
40.75
43.00
45.00
47.25
49.50
51.50
53.62
55.62
57.88
60.12
62.12
64.38
39.50
41.50
43.62
45.62
47.75
49.88
52.00
54.00
56.12
58.25
60.25
62.38
To be specified by purchaser.
B16.47 Ser A and Ser B are identical in sizes 38" thru 60".
38
40
42
44
46
48
50
52
54
56
58
60
8.12
8.50
8.81
9.18
9.62
10.12
10.56
10.88
11.38
11.75
12.06
12.56
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
1.88
2.00
2.00
2.12
2.12
2.38
2.38
2.38
2.62
2.62
2.62
2.88
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
38
Class 600
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
40.00
42.25
44.50
47.00
49.00
51.75
4.25
4.38
4.50
4.62
4.75
4.88
4.94
5.18
5.50
5.81
6.06
6.38
29.50
31.50
33.75
36.00
38.00
40.25
29.44
31.62
33.94
36.12
38.31
40.62
4.38
4.56
5.00
5.31
5.68
5.94
28.62
30.88
33.12
35.25
37.50
39.75
27.50
29.62
31.75
33.88
36.00
38.12
B16.47 Ser B
26
28
30
32
34
36
35.00
37.50
40.25
42.75
45.75
47.75
4.38
4.56
4.94
5.12
5.56
5.75
To be specified by purchaser.
B16.47 Ser A Sizes 12" thru 24" identical to ASME B16.5 except when a single taper hub is required.
26
28
30
32
34
36
8.75
9.25
9.75
10.25
10.62
11.12
26.00
28.00
30.00
32.00
34.00
36.00
0.50
0.50
0.50
0.50
0.56
0.56
36.00
38.00
40.25
42.50
44.50
47.00
2.00
2.12
2.12
2.12
2.38
2.62
28
28
28
28
28
28
940
1060
1210
1375
1540
1705
7.12
7.50
8.06
8.50
9.19
9.56
26.00
28.00
30.00
33.00
34.00
36.00
0.50
0.50
0.50
0.50
0.56
0.56
31.75
34.00
36.50
38.75
41.50
43.50
1.75
1.88
2.00
2.12
2.38
2.38
28
28
28
28
24
28
550
650
810
950
1205
1340
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
39
Class 600
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.56
0.62
0.62
0.69
45.75
47.75
50.50
52.50
54.75
57.50
60.00
62.00
64.25
66.75
68.75
71.75
2.38
2.38
2.62
2.62
2.62
2.88
3.12
3.12
3.12
3.38
3.38
3.62
28
32
28
32
32
32
28
32
32
32
32
28
1470
1630
2030
2160
2410
2855
3330
3560
3920
4280
4640
5000
50.00
52.00
55.25
57.25
59.50
62.75
65.75
67.75
70.00
73.00
75.00
78.50
6.00
6.25
6.62
6.81
7.06
7.44
7.75
8.00
8.25
8.56
8.75
9.19
6.12
6.38
6.75
7.00
7.31
7.69
8.00
8.25
8.56
8.88
9.12
9.56
41.50
43.75
46.00
48.25
50.25
52.50
54.50
56.50
58.75
60.75
63.00
65.25
40.25
42.25
44.38
46.50
48.62
50.75
52.88
54.88
57.00
59.12
61.12
63.38
To be specified by purchaser.
B16.47 Ser A and Ser B are identical in sizes 38" thru 60".
38
40
42
44
46
48
50
52
54
56
58
60
10.00
10.38
11.00
11.38
11.81
12.44
12.94
13.25
13.75
14.25
14.56
15.31
38.00
40.00
42.00
44.00
46.00
48.00
50.00
52.00
54.00
56.00
58.00
60.00
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
40
Class 900
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
42.75
46.00
48.50
51.75
55.00
57.50
5.50
5.62
5.88
6.25
6.50
6.75
6.31
6.75
7.18
7.62
8.06
8.44
29.50
31.50
33.75
36.00
38.00
40.25
30.50
32.75
35.00
37.25
39.62
41.88
6.06
6.56
6.93
7.31
7.68
7.94
30.00
32.25
34.50
36.50
39.00
40.50
29.25
31.38
33.50
35.75
37.88
40.00
B16.47 Ser B
26
28
30
32
34
36
40.25
43.50
46.50
48.75
51.75
53.00
5.31
5.81
6.12
6.31
6.75
6.81
To be specified by purchaser.
B16.47 Ser A Sizes 12" thru 24" identical to ASME B16.5 except when a single taper hub is required.
26
28
30
32
34
36
11.25
11.75
12.25
13.00
13.75
14.25
26.00
28.00
30.00
32.00
34.00
36.00
0.44
0.50
0.50
0.50
0.56
0.56
37.50
40.25
42.75
45.50
48.25
50.75
2.88
3.12
3.12
3.38
3.62
3.62
20
20
20
20
20
20
1525
1810
2120
2545
2970
3395
10.19
10.88
11.38
11.94
12.56
12.81
26.00
28.00
30.00
32.00
34.00
36.00
0.44
0.50
0.50
0.50
0.56
0.56
35.50
38.25
40.75
43.00
45.50
47.25
2.62
2.88
3.12
3.12
3.38
3.12
20
20
20
20
20
24
1050
1520
1820
2065
2450
2520
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
41
Class 900
B16.47 Series A
B16.47 Series B
Thickness
C
Nominal
Size
Outside
Dia.
O
WNF
BF
Drilling
Raised
Face
Dia.
R
Hub
Dia.
X
Bore
B
Length
Thru
Hub
Y
Dia.
Hub at
Bevel
A
Fillet
Radius
r
Bolt
Circle
Dia.
Holes
No.
Holes
Approx.
Wt.
WNF
0.75
0.81
0.81
0.88
0.88
0.94
50.75
52.75
54.75
57.62
60.50
62.50
3.62
3.62
3.62
3.88
4.12
4.12
20
24
24
24
24
24
3385
3620
3960
4300
4640
4980
57.50
59.50
61.50
64.88
68.25
70.25
7.50
7.75
8.12
8.44
8.88
9.19
8.50
8.81
9.12
9.56
10.06
10.38
43.25
45.75
47.75
50.00
52.50
54.50
42.25
44.38
46.31
48.62
50.88
52.88
To be specified
by purchaser.
B16.47 Ser A and Ser B are identical in sizes 38" thru 48".
38
40
42
44
46
48
13.88
14.31
14.63
15.38
16.18
16.50
38.00
40.00
42.00
44.00
46.00
48.00
Length thru Hub does not include 1/4" Raised Face.
Revised 1-99
42
Miscellaneous Information
Special Facings
Bolt and Stud Dimensions
Dimensional Tolerances
Bore Chart
Revised 1-99
64
Typical Facings
For Steel Pipe Flanges
Nominal
Pipe
Size
Raised Face
Large Male
Large Tongue;
also Pipe Lap
A
/2 ★
3
/4 ★
★
1
/4 ★
1
/2 ★
★
1
/2
★
1
/2 ★
★
★
★
★
1
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
1.38
1.69
2.00
2.50
2.88
3.62
4.12
5.00
5.50
6.19
7.31
8.50
10.62
12.75
15.00
16.25
18.50
21.00
23.00
27.25
Small
Male
Small
Tongue
Inside Dia.
Large
Female,
Large
Groove
Small
Female
Small
Groove
Large
Tongue
Small
Tongue
Ring Joint
Large
Groove
Small
Groove
Pitch
Dia.
Depth
of
Groove
P
L
B
C
D
E
F
G
H
0.72
0.94
1.19
1.50
1.75
2.25
2.69
3.31
3.81
4.31
5.38
6.38
8.38
10.50
12.50
13.75
15.75
17.75
19.75
23.75
1.38
1.69
1.88
2.25
2.50
3.25
3.75
4.62
5.12
5.69
6.81
8.00
10.00
12.00
14.25
15.50
17.62
20.12
22.00
26.25
1.44
1.75
2.06
2.56
2.94
3.69
4.19
5.06
5.56
6.25
7.38
8.56
10.69
12.81
15.06
16.31
18.56
21.06
23.06
27.31
0.78
1.00
1.25
1.56
1.81
2.31
2.75
3.38
3.88
4.38
5.44
6.44
8.44
10.56
12.56
13.81
15.81
17.81
19.81
23.81
1.44
1.75
1.94
2.31
2.56
3.31
3.81
4.69
5.19
5.75
6.88
8.06
10.06
12.06
14.31
15.56
17.69
20.19
22.06
26.31
1.00
1.31
1.50
1.88
2.12
2.88
3.38
4.25
4.75
5.19
6.31
7.50
9.38
11.25
13.50
14.75
16.75
19.25
21.00
25.25
0.94
1.25
1.44
1.81
2.06
2.81
3.31
4.19
4.69
5.12
6.25
7.44
9.31
11.19
13.44
14.69
16.69
19.19
20.94
25.19
DIMENSIONS are shown in inches.
/16" RAISED FACE (Fig. 1) is standard for 150 and 300 lb. Welding
Neck, Slip-On, Screwed and Blind Flanges, and is included in the
flange thickness.
1
These Dimensions Vary With The
Flange Pressure Rating.
See Pages 82, 83, and 84.
Outside Dia.
LAP JOINT flanges are commonly furnished without a raised face,
the rolled lap on the pipe itself forming a raised contact surface (see
Fig. 2).
★ Large Female and Large Groove Class 150 in these sizes will be
full faced to O.D. of flange.
/4" RAISED FACE (Fig. 1) is standard for 400 lb. and heavier
Welding Neck, Slip-On, Screwed and Blind Flanges, and is not
included in the flange thickness.
1
Revised 1-99
65
Typical Facings
For Steel Pipe Flanges
150 lb.
&
300 lb.
400 lb.
&
Heavier
Fig. 1. RAISED FACE
Fig. 2. LAP JOINT
Fig. 3. FLAT FACE
Fig. 4. RING JOINT
Fig. 5. LARGE MALE AND FEMALE
Fig. 6. SMALL MALE AND FEMALE
Fig. 7. LARGE TONGUE AND GROOVE
Fig. 8. SMALL TONGUE AND GROOVE
See Dimensions and Notes
Revised 1-99
66
Facing Dimensions for Ring Joints
ASME B16.5
For 150 LB. Flanges
Nominal
Pipe
Size
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
1
/2
1
/2
1
/2
1
Groove
Pitch Dia. of
Ring and
Groove
P
Dia. of
Raised
Face
K
Width
D
1.875
2.250
2.562
3.250
4.000
4.500
5.188
5.875
6.750
7.625
9.750
12.000
15.000
15.625
17.875
20.375
22.000
26.500
2.50
2.88
3.25
4.00
4.75
5.25
6.06
6.75
7.62
8.62
10.75
13.00
16.00
16.75
19.00
21.50
23.50
28.00
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
0.344
Ring
Ring
No.
Depth
L
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
Approx.
Distance
Between Flanges
When Joint
is Compressed
R15
R17
R19
R22
R25
R29
R33
R36
R40
R43
R48
R52
R56
R59
R64
R68
R72
R76
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.12
0.12
0.12
0.12
0.12
For 300, 400 and 600 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
Pitch Dia. of
Ring and
Groove
P
1.344
1.688
2.000
2.375
2.688
3.250
4.000
4.875
5.188
5.875
7.125
8.312
10.625
12.750
15.000
16.500
18.500
21.000
23.000
27.250
Groove
Ring
Dia. of
Raised
Face
K
Width
D
Depth
L
2.00
2.50
2.75
3.12
3.56
4.25
5.00
5.75
6.25
6.88
8.25
9.50
11.88
14.00
16.25
18.00
20.00
22.62
25.00
29.50
0.281
0.344
0.344
0.344
0.344
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.531
0.656
0.219
0.250
0.250
0.250
0.250
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.375
0.438
Ring
No.
Approx. Distance Between Flanges
When Joint is Compressed
300 lb.
R11
R13
R16
R18
R20
R23
R26
R31
R34
R37
R41
R45
R49
R53
R57
R61
R65
R69
R73
R77
0.12
0.16
0.16
0.16
0.16
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.25
400 lb.
0.12
0.16
0.16
0.16
0.16
0.19
0.19
0.19
0.19
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.22
0.25
600 lb.
0.12
0.16
0.16
0.16
0.16
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.19
0.22
Revised 1-99
67
Facing Dimensions for Ring Joints
ASME B16.5
For 900 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
14
16
18
20
24
Groove
Pitch Dia. of
Ring and
Groove
P
Dia. of
Raised
Face
K
Width
D
1.562
1.750
2.000
2.375
2.688
3.750
4.250
4.875
5.875
7.125
8.312
10.625
12.750
15.000
16.500
18.500
21.000
23.000
27.250
2.38
2.62
2.81
3.19
3.62
4.88
5.38
6.12
7.12
8.50
9.50
12.12
14.25
16.50
18.38
20.62
23.38
25.50
30.38
0.344
0.344
0.344
0.344
0.344
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.469
0.656
0.656
0.781
0.781
1.062
Ring
Depth
L
0.250
0.250
0.250
0.250
0.250
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.312
0.438
0.438
0.500
0.500
0.625
Ring
No.
R12
R14
R16
R18
R20
R24
R27
R31
R37
R41
R45
R49
R53
R57
R62
R66
R70
R74
R78
Approx.
Distance
Between Flanges
When Joint
is Compressed
0.16
0.16
0.16
0.16
0.16
0.12
0.12
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.16
0.19
0.19
0.22
For 1500 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
14
16
18
20
24
Groove
Pitch Dia. of
Ring and
Groove
P
Dia. of
Raised
Face
K
Width
D
1.562
1.750
2.000
2.375
2.688
3.750
4.250
5.375
6.375
7.625
8.312
10.625
12.750
15.000
16.500
18.500
21.000
23.000
27.250
2.38
2.62
2.81
3.19
3.62
4.88
5.38
6.62
7.62
9.00
9.75
12.50
14.62
17.25
19.25
21.50
24.12
26.50
31.25
0.344
0.344
0.344
0.344
0.344
0.469
0.469
0.469
0.469
0.469
0.531
0.656
0.656
0.906
1.062
1.188
1.188
1.312
1.438
CORNER RADIUS “r” is 0.03" for 0.469" groove width and smaller;
0.06" for groove widths0.531" to 0.906" inclusive and 0.09" for groove
widths 1.062" and larger.
Ring
Depth
L
0.250
0.250
0.250
0.250
0.250
0.312
0.312
0.312
0.312
0.312
0.375
0.438
0.438
0.562
0.625
0.688
0.688
0.688
0.812
Ring
No.
R12
R14
R16
R18
R20
R24
R27
R35
R39
R44
R46
R50
R54
R58
R63
R67
R71
R75
R79
Approx.
Distance
Between Flanges
When Joint
is Compressed
0.16
0.16
0.16
0.16
0.16
0.12
0.12
0.12
0.12
0.12
0.12
0.16
0.16
0.19
0.22
0.31
0.31
0.38
0.44
FLAT-BOTTOMED GROOVE, as shown in detail above, will be
furnished unless otherwise specified.
Revised 1-99
68
Facing Dimensions For Ring Joints
ASME B16.5
For 2500 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1 1/4
1 1/2
2
2 1/2
3
4
5
6
8
10
12
Groove
Ring
Pitch Dia. of
Ring and
Groove
P
Dia. of
Raised
Face
K
Width
D
Depth
L
1.688
2.000
2.375
2.844
3.250
4.000
4.380
5.000
6.188
7.500
9.000
11.000
13.500
16.000
2.56
2.88
3.25
4.00
4.50
5.25
5.88
6.62
8.00
9.50
11.00
13.38
16.75
19.50
0.344
0.344
0.344
0.469
0.469
0.469
0.531
0.531
0.656
0.781
0.781
0.906
1.188
1.312
0.250
0.250
0.250
0.312
0.312
0.312
0.375
0.375
0.438
0.500
0.500
0.562
0.688
0.688
Ring
No.
R13
R16
R18
R21
R23
R26
R28
R32
R38
R42
R47
R51
R55
R60
Approx.
Distance
Between Flanges
When Joint
is Compressed
0.16
0.16
0.16
0.12
0.12
0.12
0.12
0.12
0.16
0.16
0.16
0.19
0.25
0.31
Beveling Standards
For wall thicknesses through 0.88", a straight 37.5° bevel with a
0.06" land is provided for fittings and flanges. For wall thicknesses
greater than 0.88", a compound bevel is furnished. Also, for wall
thicknesses above 0.75", a U bevel can be furnished if specified.
Compound bevel for thicknesses greater than 0.88"
37.5° bevel for wall thicknesses through 0.88"
20° U-bevel for all thicknesses above 0.75"
Note: All nominal Pipe Sizes in materials covered by ASME B16.9 are beveled as shown. Other bevels available upon request.
Revised 1-99
69
Ring Joint Dimensions
B16.47, Ser. A
Class 300, 400 and 600
Facing Dimensions
Ring-Type Joint
Flange
Size
*Facing
Dia.
Depth
of
Groove
Pitch
Dia.
Width
of
Groove
Ring
Number
Groove
Fillet
Radius
26
31.88
0.500
29.500
0.781
R93
0.06
28
33.88
0.500
31.500
0.781
R94
0.06
30
36.12
0.500
33.750
0.781
R95
0.06
32
38.75
0.562
36.000
0.906
R96
0.06
34
40.75
0.562
38.000
0.906
R97
0.06
36
43.00
0.562
40.250
0.906
R98
0.06
Width
of
Groove
Ring
Number
Class 900
Facing Dimensions
Ring-Type Joint
Flange
Size
*Facing
Dia.
Depth
of
Groove
Pitch
Dia.
Groove
Fillet
Radius
26
32.75
0.688
29.500
1.188
R100
0.09
28
35.00
0.688
31.500
1.312
R101
0.09
30
37.25
0.688
33.750
1.312
R102
0.09
32
39.50
0.688
36.000
1.312
R103
0.09
34
42.00
0.812
38.000
1.438
R104
0.09
36
44.25
0.812
40.250
1.438
R105
0.09
* Full face contour may be used.
Revised 1-99
70
Bolt and Stud Dimensions
ASME B16.5
150 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
No. of
Bolts or
Studs
4
4
4
4
4
4
4
4
8
8
8
8
8
12
12
12
16
16
20
20
Dia. of
Bolts or
Studs
0.50
0.50
0.50
0.50
0.50
0.62
0.62
0.62
0.62
0.62
0.75
0.75
0.75
0.88
0.88
1.00
1.00
1.12
1.12
1.25
600 LB. Flanges
Nominal
Pipe
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
24
/4
/2
1
1
/2
1
/2
1
No. of
Bolts or
Studs
4
4
4
4
4
8
8
8
8
8
8
12
12
16
20
20
20
20
24
24
Dia. of
Bolts or
Studs
0.50
0.62
0.62
0.62
0.75
0.62
0.75
0.75
0.88
0.88
1.00
1.00
1.12
1.25
1.25
1.38
1.50
1.62
1.62
1.88
300 LB. Flanges
(3)
Length
of Bolts
A
Length
of Studs
B
2.00
2.00
2.25
2.25
2.50
2.75
3.00
3.00
3.00
3.00
3.25
3.25
3.50
4.00
4.00
4.50
4.50
5.00
5.50
6.00
2.25
2.50
2.50
2.75
2.75
3.25
3.50
3.50
3.50
3.50
3.75
4.00
4.25
4.50
4.75
5.25
5.25
5.75
6.25
6.75
(4)
Length
of Studs
B
3.00
3.50
3.50
3.75
4.25
4.25
4.75
5.00
5.50
5.75
6.50
6.75
7.50
8.50
8.75
9.25
10.00
10.75
11.25
13.00
No. of
Bolts or
Studs
4
4
4
4
4
8
8
8
8
8
8
12
12
16
16
20
20
24
24
24
†
†
†
†
†
†
†
8
—
8
8
12
12
16
20
20
20
20
20
20
Dia. of
Bolts or
Studs
.†
.†
.†
.†
.†
.†
.†
0.88
.—
1.12
1.25
1.12
1.38
1.38
1.38
1.50
1.62
1.88
2.00
2.50
(1) All dimensions in inches.
(2) Lengths include allowance for pulling-up.
(3) Length based on .06" raised faced Welding Neck, Slip-On,
Screwed or Blind Flanges. For lap joint, add the thickness of both
laps.
Length
of Bolts
A
0.50
0.62
0.62
0.62
0.75
0.62
0.75
0.75
0.75
0.75
0.75
0.75
0.88
1.00
1.12
1.12
1.25
1.25
1.25
1.50
900 LB. Flanges
No. of
Bolts or
Studs
Dia. of
Bolts or
Studs
(4)
Length
of Studs
B
.†
.†
.†
.†
.†
.†
.†
5.75
.—
6.75
7.50
7.50
8.75
9.25
10.00
10.75
11.25
12.75
13.75
17.25
400 LB. Flanges
(3)
2.25
2.50
2.50
2.75
3.00
3.00
3.25
3.50
3.75
3.75
4.25
4.25
4.75
5.50
5.75
6.25
6.50
6.75
7.25
8.00
Length
of Studs
B
2.50
3.00
3.00
3.25
3.50
3.50
4.00
4.25
4.25
4.50
4.75
4.75
5.50
6.25
6.75
7.00
7.50
7.75
8.00
9.00
1500 LB. Flanges
No. of
Bolts or
Studs
Dia. of
Bolts or
Studs
4
4
4
4
4
8
8
8
—
8
8
12
12
12
16
16
16
16
16
16
0.75
0.75
0.88
0.88
1.00
0.88
1.00
1.12
.—
1.25
1.50
1.38
1.62
1.88
2.00
2.25
2.50
2.75
3.00
3.50
(4)
Length
of Studs
B
4.25
4.50
5.00
5.00
5.50
5.75
6.25
7.00
.—
7.75
9.75
10.25
11.50
13.25
14.75
16.00
17.50
19.50
21.25
24.25
No. of
Bolts or
Studs
Dia. of
Bolts or
Studs
*
*
*
*
*
*
*
*
*
8
8
12
12
16
16
20
20
24
24
24
.*
.*
.*
.*
.*
.*
.*
.*
.*
0.88
0.88
0.88
1.00
1.12
1.25
1.25
1.38
1.38
1.50
1.75
(4)
Length
of Studs
B
.*
.*
.*
.*
.*
.*
.*
.*
.*
5.50
5.75
6.00
6.75
7.50
8.00
8.25
8.75
9.00
9.50
10.50
2500 LB. Flanges
No. of
Bolts or
Studs
Dia. of
Bolts or
Studs
4
4
4
4
4
8
8
8
—
8
8
8
12
12
12
—
—
—
—
—
0.75
0.75
0.88
1.00
1.12
1.00
1.13
1.25
.—
1.50
1.75
2.00
2.00
2.50
2.75
.—
.—
.—
.—
.—
(4)
Length
of Studs
B
4.75
5.00
5.50
6.00
6.75
7.00
7.75
8.75
.—
10.00
11.75
13.50
15.00
19.25
21.25
.—
.—
.—
.—
.—
(4) Length based on 0.25" raised faced Welding Neck, Slip-On,
Screwed or Blind Flanges. For lap joint, add the thickness of both laps
and subtract 0.50". For male and female or tongue and groove flange
faces, subtract 0.25".
* Same as 600 lb. flanges. † Same as 1500 lb. flanges.
Revised 1-99
71
Bore Chart
Nominal Wall Thickness
Nominal
Size
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
22
24
26
30
36
40
42
48
/4
/2
1
1
/2
1
/2
1
Nominal
Outside
Dia.
Sched
10†
Sched.
20
0.840
1.050
1.315
1.660
1.990
2.375
2.875
3.500
4.000
4.500
5.563
6.625
8.625
10.750
12.750
14.000
16.000
18.000
20.000
22.000
24.000
26.000
30.000
36.000
40.000
42.000
48.000
0.083
0.083
0.109
0.109
0.109
0.120
0.120
0.120
0.120
0.134
0.134
0.134
0.148
0.165
0.180
0.250
0.250
0.250
0.250
0.250
0.250
.—
0.312
0.312
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.250
0.250
0.250
0.312
0.312
0.312
0.375
.—
0.375
.—
0.500
0.500
.—
.—
.—
Sched.
30
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.277
0.307
0.330
0.375
0.375
0.438
0.500
.—
0.562
.—
0.625
0.625
.—
.—
.—
STD§
WALL
Sched.
40
Sched.
60
EX.#
STG.
0.109
0.113
0.133
0.140
0.145
0.154
0.203
0.216
0.226
0.237
0.258
0.280
0.322
0.365
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.109
0.113
0.133
0.140
0.145
0.154
0.203
0.216
0.226
0.237
0.258
0.280
0.322
0.365
0.406
0.438
0.500
0.562
0.594
.—
0.688
.—
.—
0.750
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.406
0.500
0.562
0.656
0.750
0.812
.—
0.969
.—
.—
.—
.—
.—
.—
.—
0.147
0.154
0.179
0.191
0.200
0.218
0.276
0.300
0.318
0.337
0.375
0.432
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
Sched.
80
Sched.
100
Sched.
120
Sched.
140
Sched.
160
XX
STG.
0.147
0.154
0.179
0.191
0.200
0.218
0.276
0.300
0.318
0.337
0.375
0.432
0.500
0.594
0.688
0.750
0.844
0.938
1.031
.—
1.219
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.594
0.719
0.844
0.938
1.031
1.156
1.218
.—
1.531
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.438
0.500
0.562
0.719
0.844
1.000
1.094
1.219
1.375
1.500
.—
1.812
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.812
1.000
1.125
1.250
1.438
1.562
1.750
.—
2.062
.—
.—
.—
.—
.—
.—
0.188
0.219
0.250
0.250
0.281
0.344
0.375
0.438
.—
0.531
0.625
0.719
0.906
1.125
1.312
1.406
1.594
1.781
1.969
.—
2.344
.—
.—
.—
.—
.—
.—
0.294
0.308
0.358
0.382
0.400
0.436
0.552
0.600
0.636
0.674
0.750
0.864
0.875
1.000
1.000
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
0.546
0.742
0.957
1.278
1.500
1.939
2.323
2.900
3.364
3.826
4.813
5.761
7.625
9.562
13.374
12.500
14.312
16.124
17.938
.—
21.562
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
7.437
9.312
11.062
12.124
13.938
15.688
17.438
.—
20.938
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
3.624
4.563
5.501
7.187
9.062
10.750
11.812
13.562
15.250
17.000
.—
20.376
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
7.001
8.750
10.500
11.500
13.124
14.876
16.500
.—
19.876
.—
.—
.—
.—
.—
.—
Nominal Inside Diameter
/2
/4
1
3
1
1
1
2
2
3
3
4
5
6
8
10
12
14
16
18
20
22
24
26
30
36
40
42
48
/4
/2
1
1
/2
1
/2
1
0.840
1.050
1.315
1.660
1.900
2.375
2.875
3.500
4.000
4.500
5.563
6.625
8.625
10.750
12.750
14.000
16.000
18.000
20.000
22.000
24.000
26.000
30.000
36.000
40.000
42.000
48.000
0.674
0.884
1.097
1.442
1.682
2.157
2.635
3.260
3.760
4.260
5.295
6.357
8.329
10.420
12.390
13.500
15.500
17.500
19.500
21.500
23.500
.—
29.376
35.376
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
8.125
10.250
12.250
13.376
15.376
17.376
19.250
.—
23.250
.—
29.000
35.000
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
8.071
10.136
12.090
13.250
15.250
17.124
19.000
.—
22.876
.—
28.750
34.750
.—
.—
.—
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
3.548
4.026
5.047
6.065
7.981
10.020
12.000
13.250
15.250
17.250
19.250
21.250
23.250
25.250
29.250
35.250
39.250
41.250
47.250
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
3.548
4.026
5.047
6.065
7.981
10.020
11.938
13.124
15.000
16.876
18.812
.—
22.624
.—
.—
34.500
.—
.—
.—
† Schedule 10 for sizes 14" and larger. Sizes 12" and smaller are
Light Wall Thickness, or Stainless Steel Schedule 10S.
§ Standard Wall Thicknesses are identical to Stainless Steel Schedule
40S in sizes thru 12".
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
7.813
9.750
11.626
12.812
14.688
16.500
18.376
.—
22.062
.—
.—
.—
.—
.—
.—
0.546
0.742
0.957
1.278
1.500
1.939
2.323
2.900
3.364
3.826
4.813
5.761
7.625
9.750
11.750
13.000
15.000
17.000
19.000
21.000
23.000
25.000
29.000
35.000
39.000
41.000
47.000
0.464 0.252
0.612 0.434
0.815 0.599
1.160 0.896
1.338 1.100
1.687 1.503
2.125 1.771
2.624 2.300
.—
2.726
3.438 3.152
4.313 4.063
5.187 4.897
6.813 6.875
8.500 8.750
10.126 10.750
11.188
.—
12.812
.—
14.438
.—
16.062
.—
.—
.—
19.312
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
.—
# Extra Strong Wall Thicknesses are identical to Stainless Steel
Schedule 80S in sizes thru 12".
Revised 1-99
72
Dimensional Tolerances for
Tex Met Forged Pipe Flanges
Listed below are the Dimensional Tolerances to which
Tex Met flanges are manufactured. These tolerances are
a part of ASME B16.5 except where noted otherwise.
The limits given are maximum, and Tex Met products
will normally run much closer to nominal dimensions
than to these permitted extremes. Rigid inspection
procedures assure the maintenance of high standards of
accuracy in regular day to day production.
Threaded, Socket-Welded, Slip-On, Lap Joint and Blind
Threaded
Socket-Welding
Slip-On and
Lap Joint
Inside
Dia.
Dia.
of
Contact
Face
To Standard
Gauge Limits
10" and Smaller
+ 0.03" (0.8mm), - 0"
12" and Larger
+ 0.06" (1.6mm), - 0"
0.06" Raised Face
0.25" Raised Face
Tongue and Groove
Male, Female
Dia.
of
Counterbore
± 0.03" (0.8mm)
Welding Neck
Inside
Dia.
10" and Smaller
12" thru 18"
20" thru 42"
± 0.03" (0.8mm)
± 0.06" (1.6mm)
+ 0.12" (3.2mm), - 0.06" (1.6mm)
Dia.
of
Contact
Face
0.06" Raised Face
0.25" Raised Face
Tongue and Groove
Male, Female
± 0.03" (0.8mm)
Dia. of
Hub at Point
of Welding
5" and Smaller
6" and Larger
+ 0.09" (2.4mm), - 0.03" (0.8mm)
+ 0.16" (4.0mm), - 0.03" (0.8mm)
Bolt Circle
Bolt hole spacing
± 0.06" (1.6mm)
± 0.03" (0.8mm)
21/2" and Smaller
0.03" Max. (0.8mm)
± 0.02" (0.5mm)
10" and Smaller
12" thru 42"
+ 0.03" (0.8mm), - 0"
+ 0.06" (1.6mm), - 0"
Bolt Circle
Bolt hole spacing
± 0.06" (1.6mm)
± 0.03" (0.8mm)
21/2" and Smaller
0.03" Max. (0.8mm)
Drilling
Drilling
Eccentricity of
Bolt Circle with
Respect to Facing
Thickness
18" and Smaller
20" thru 42"
± 0.02" (0.5mm)
3" and Larger
0.06" Max. (1.6mm)
+ 0.12" (3.2mm), - 0"
+ 0.19" (4.8mm), - 0"
Eccentricity of
Bolt Circle with
Respect to Facing
3" and Larger
0.06" Max. (1.6mm)
Thickness
18" and Smaller
Over 18"
+ 0.12" (3.2mm), - 0"
+ 0.19" (4.8mm), - 0"
Length
Thru Hub
4" and Smaller
5" to 10" inclusive
12" and Larger
+ 0.06", - 0"
+ 0.06", - 0.12"
+ 0.12", - 0.18"
Ring Joint Facing
Depth
Dimension L
± 0.016" (0.4mm), - 0"
Width
Dimension D
± 0.008"
Pitch Dia.
Dimension P
± 0.005"
Rad. at
Bottom
0.06" and Smaller
Larger than 0.06"
+ 0.03" - 0"
± 0.03"
Inside and outside diameter of large and small tongue and groove and
female ± 0.02".
Angle
B16.47 Series A
Rad. @ Bottom
23˚ Angle
± 1/2˚
Max
For orifice flanges (not covered by ASME B16.5) the usual tolerance
on the dimension 0.94" is ± 0.02" for sizes 3" and smaller, ± 0.03" for
sizes 4" and larger. Regular flange tolerances apply to all other
dimensions.
Revised 1-99
73