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ASME B16.5 Class 150 Flange

1. Technical Drawings for ASME B16.5 Class 150 Flanges

Drawing of ASME B16.5 Class 150 weld neck flange, raised face(RF).

Drawing of ASME B16.5 Class 150 weld neck flange, raised face(RF).

Drawing of ASME B16.5 Class 150 blind flange, raised face(RF).

Drawing of ASME B16.5 Class 150 blind flange, raised face(RF).

Drawing of ASME B16.5 Class 150 slip on flange, raised face(RF).

Drawing of ASME B16.5 Class 150 slip on flange, raised face(RF).

Drawing of ASME B16.5 Class 150 socket weld flange, raised face(RF).

Drawing of ASME B16.5 Class 150 socket weld flange, raised face(RF).

Drawing of ASME B16.5 Class 150 threaded flange, raised face(RF).

Drawing of ASME B16.5 Class 150 threaded flange, raised face(RF).

Drawing of ASME B16.5 Class 150 lap joint (lapped) flange.

Drawing of ASME B16.5 Class 150 lap joint (lapped) flange.

2. Flange & Bolting Dimensions for Class 150

All dimensions are provided in both mm and inch units. The two unit system shall be used respectively and exclusively. The bolting of ASME B16.5 Class 150 flanges can be furnished by stud bolt with nuts or machine bolt with nuts. Stud bolts can be used for RF or RTJ end facing while machine bolts are only used for RF facing. Dimensions of ASME B16.5 Class 150 flanges in below tables shall be furnished with RF facing. For other facings, please contact us for detailed specification.

NPSO
mm
inch
To
mm
inch
T1
mm
inch
X
mm
inch
Ah
mm
inch
ro
mm
inch
Do
mm
inch
1/290
3.50
9.6
0.38
11.2
0.44
30
1.19
21.3
0.84
3
0.12
10
0.38
3/4100
3.88
11.2
0.44
12.7
0.50
38
1.50
26.7
1.05
3
0.12
11
0.44
1110
4.25
12.7
0.50
14.3
0.56
49
1.94
33.4
1.32
3
0.12
13
0.50
1-1/4115
4.62
14.3
0.56
15.9
0.62
59
2.31
42.2
1.66
5
0.19
14
0.56
1-1/2125
5.00
15.9
0.62
17.5
0.69
65
2.56
48.3
1.90
6
0.25
16
0.62
2150
6.00
17.5
0.69
19.1
0.75
78
3.06
60.3
2.38
8
0.31
17
0.69
2-1/2180
7.00
20.7
0.81
22.3
0.88
90
3.56
73.0
2.88
8
0.31
19
0.75
3190
7.50
22.3
0.88
23.9
0.94
108
4.25
88.9
3.50
10
0.38
21
0.81
3-1/2215
8.50
22.3
0.88
23.9
0.94
122
4.81
101.6
4.00
10
0.38
-
4230
9.00
22.3
0.88
23.9
0.94
135
5.31
114.3
4.50
11
0.44
-
5255
10.00
22.3
0.88
23.9
0.94
164
6.44
141.3
5.56
11
0.44
-
6280
11.0
23.9
0.94
25.4
1.00
192
7.56
168.3
6.63
13
0.50
-
8345
13.50
27.0
1.06
28.6
1.12
246
9.69
219.1
8.63
13
0.50
-
10405
16.00
28.6
1.12
30.2
1.19
305
12.00
273.0
10.75
13
0.50
-
12485
19.00
30.2
1.19
31.8
1.25
365
14.38
323.8
12.75
13
0.50
-
14535
21.00
33.4
1.31
35.0
1.38
400
15.75
355.6
14.00
13
0.50
-
16595
23.50
35.0
1.38
36.6
1.44
457
18.00
406.4
16.00
13
0.50
-
18635
25.00
38.1
1.50
39.7
1.56
505
19.88
457.0
18.00
13
0.50
-
20700
27.50
41.3
1.62
42.9
1.69
559
22.00
508.0
20.00
13
0.50
-
24815
32.00
46.1
1.81
47.7
1.88
663
26.12
610.0
24.00
13
0.50
-
*O:outside diameter of flange; To:minimum flange thickness of W/N, S/O, Blind, THD, S/W; T1:minimum thickness of lap joint flange;
*X:diameter at hub; Ah:hub diameter at the beginning of chamfer for W/N; ro: corner bore radius of lapped flange; Do:depth of socket.

NPSY1
mm
inch
Y2
mm
inch
Y3
mm
inch
Ta
mm
inch
B1
mm
inch
B2
mm
inch
B3
mm
inch
1/246
1.81
14
0.56
16
0.62
16
0.62
15.8
0.62
22.2
0.88
22.9
0.90
3/451
2.00
14
0.56
16
0.62
16
0.62
20.9
0.82
27.7
1.09
28.2
1.11
154
2.12
16
0.62
17
0.69
17
0.69
26.6
1.05
34.5
1.36
34.9
1.38
1-1/456
2.19
19
0.75
21
0.81
21
0.81
35.1
1.38
43.2
1.70
43.7
1.72
1-1/260
2.38
21
0.81
22
0.88
22
0.88
40.9
1.61
49.5
1.95
50.0
1.97
262
2.44
24
0.94
25
1.00
25
1.00
52.5
2.07
61.9
2.44
62.5
2.46
2-1/268
2.69
27
1.06
29
1.12
29
1.12
62.7
2.47
74.6
2.94
75.4
2.97
368
2.69
29
1.12
30
1.19
30
1.19
77.9
3.07
90.7
3.57
91.4
3.60
3-1/270
2.75
30
1.19
32
1.25
32
1.25
90.1
3.55
103.4
4.07
104.1
4.10
475
2.94
32
1.25
33
1.31
33
1.31
102.3
4.03
116.1
4.57
116.8
4.60
587
3.44
35
1.38
36
1.44
36
1.44
128.2
5.05
143.8
5.66
144.4
5.69
687
3.44
38
1.50
40
1.56
40
1.56
154.1
6.07
170.7
6.72
171.4
6.75
8100
3.94
43
1.69
44
1.75
44
1.75
202.7
7.98
221.5
8.72
222.2
8.75
10100
3.94
48
1.88
49
1.94
49
1.94
254.6
10.02
276.2
10.88
277.4
10.92
12113
4.44
54
2.12
56
2.19
56
2.19
304.8
12.00
327.0
12.88
328.2
12.92
14125
4.94
56
2.19
79
2.25
57
2.25
-359.2
14.14
360.2
14.18
16125
4.94
62
2.44
87
2.50
64
2.50
-410.5
16.16
411.2
16.19
18138
5.44
67
2.62
97
2.69
68
2.69
-461.8
18.18
462.3
18.20
20143
5.62
71
2.81
103
2.88
73
2.88
-513.1
20.20
514.4
20.25
24151
5.94
81
3.19
111
3.25
83
3.25
-616.0
24.25
616.0
24.25
*Y1:length through hub of welding neck flange; Y2:length through hub of threaded, S/O and S/W flange; Y3:length through hub of lapped flange.
*Ta:minimum thread length of threaded flange; B1:bore diameter of welding neck flange or lower part of socket welding flange.
*B2:bore diameter of slip on flange or upper part of socket welding flange; B3:bore diameter of lap joint(lapped) flange.

NPSW
mm
inch
R
mm
inch
d
inch
ndo
inch
LSRF
mm
inch
LSRTJ
mm
inch
LMRF
mm
inch
1/260.3
2.38
34.9
1.38
5/841/255
2.25
-50
2.00
3/469.9
2.75
42.9
1.69
5/841/265
2.50
-50
2.00
179.4
3.12
50.8
2.00
5/841/265
2.50
75
3.00
55
2.25
1-1/488.9
3.50
63.5
2.50
5/841/270
2.75
85
3.25
55
2.25
1-1/298.4
3.88
73.0
2.88
5/841/270
2.75
85
3.25
65
2.50
2120.7
4.75
92.1
3.62
3/445/885
3.25
95
3.75
70
2.75
2-1/2139.7
5.50
104.8
4.12
3/445/890
3.50
100
4.00
75
3.00
3152.4
6.00
127.0
5.00
3/445/890
3.50
100
4.00
75
3.00
3-1/2177.8
7.00
139.7
5.50
3/485/890
3.50
100
4.00
75
3.00
4190.5
7.50
157.2
6.19
3/485/890
3.50
100
4.00
75
3.00
5215.9
8.50
185.7
7.31
7/883/495
3.75
110
4.25
85
3.25
6241.3
9.50
215.9
8.50
7/883/4100
4.00
115
4.50
85
3.25
8298.5
11.75
269.9
10.62
7/883/4110
4.25
120
4.75
90
3.50
10362.0
14.25
323.8
12.75
1127/8115
4.50
125
5.00
100
4.00
12431.8
17.00
381.0
15.00
1127/8120
4.75
135
5.25
100
4.00
14476.3
18.75
412.8
16.25
1 1/8121135
5.25
145
5.75
115
4.50
16539.8
21.25
469.9
18.50
1 1/8161135
5.25
145
5.75
115
4.50
18577.9
22.75
533.4
21.00
1 1/4161 1/8145
5.75
160
6.25
125
5.00
20635.0
25.00
584.2
23.00
1 1/4201 1/8160
6.25
170
6.75
140
5.50
24749.3
29.50
692.2
27.25
1 3/8201 1/4170
6.75
185
7.25
150
6.00
*W:diameter of bolt circle; d:diameter of bolt holes; n:number of bolts; do:diameter of bolts; R:outside diameter of RF.
*LSRF:length of stud bolts for raised face; LSRTJ:length of stud bolts for ring joint; LMRF:length of machine bolts for raised face.

The drawing of stud bolt with nuts & machine bolt with nuts for ASME B16.5 Class 150 flanges.

The drawing of stud bolt with nuts & machine bolt with nuts for ASME B16.5 Class 150 flanges.

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