You are here: Home/ Socket Weld Flange Dimensions – Class 150 to Class 1500
Socket Weld Flange Dimensions – Class 150 to Class 1500
Socket weld flange dimensions are covered in ASME B16.5 – which covers Pipe Flanges and Flanged Fittings for size NPS ½” to 24” for above NPS 26” to 60” it should be as per ASME B16.47. Socket weld flanges are available only up to 3″ NPS Size.
During dimensional inspection of flange, you should check for
Outer & Inner Diameter of body
Bolt Circle & Bolt Hole Diameter
Depth of the socket
Length of the Hub and
Straightness and alignment of the bolt hole
Class 150 Socket Neck Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
Socket Depth
PCD
Socket Bore
No of Bolts
Bolt Size UNC
Machine Bolt Length
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
J
1/2
15
90
9.6
30
14
34.9
2
10
60.3
22.2
4
1/2
50
55
5/8
M14
0.8
3/4
20
100
11.2
38
14
42.9
2
11
69.9
27.7
4
1/2
50
65
5/8
M14
0.9
1
25
110
12.7
49
16
50.8
2
13
79.4
34.5
4
1/2
55
65
5/8
M14
0.9
1 1/4
32
115
14.3
59
19
63.5
2
14
88.9
43.2
4
1/2
55
70
5/8
M14
1.4
1 1/2
40
125
15.9
65
21
73
2
16
98.4
49.5
4
1/2
65
70
5/8
M14
1.4
2
50
150
17.5
78
24
92.1
2
17
120.7
61.9
4
5/8
70
85
3/4
M16
2.3
2 1/2
65
180
20.7
90
27
105
2
19
139.7
74.6
4
5/8
75
90
3/4
M16
3.2
3
80
190
22.3
108
29
127
2
21
152.4
90.7
4
5/8
75
90
3/4
M16
3.7
Class 300 Socket Neck Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
Socket Depth
PCD
Socket Bore
No of Bolts
Bolt Size UNC
Machine Bolt Length
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
J
1/2
15
95
12.7
38
21
34.9
2
10
66.7
22.2
4
1/2
55
65
5/8
M14
1.2
3/4
20
115
14.3
48
24
42.9
2
11
82.6
27.7
4
5/8
65
75
3/4
M16
1.4
1
25
125
15.9
54
25
50.8
2
13
88.9
34.5
4
5/8
65
75
3/4
M16
1.4
1 1/4
32
135
17.5
64
25
63.5
2
14
98.4
43.2
4
5/8
70
85
3/4
M16
1.8
1 1/2
40
155
19.1
70
29
73
2
16
114.3
49.5
4
3/4
75
90
7/8
M20
2.7
2
50
165
20.7
84
32
92.1
2
17
127
61.9
8
5/8
75
90
3/4
M16
3.2
2 1/2
65
190
23.9
100
37
105
2
19
149.2
74.6
8
3/4
85
100
7/8
M20
4.6
3
80
210
27
117
41
127
2
21
168.3
90.7
8
3/4
90
110
7/8
M20
5.9
Class 600 Socket Neck Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
Socket Depth
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
J
1/2
15
95
14.3
38
22
34.9
7
10
66.7
22.2
4
1/2
75
5/8
M14
1.3
3/4
20
115
15.9
48
25
42.9
7
11
82.6
27.7
4
5/8
90
3/4
M16
1.4
1
25
125
17.5
54
27
50.8
7
13
88.9
34.5
4
5/8
90
3/4
M16
1.8
1 1/4
32
135
20.7
64
29
63.5
7
14
98.4
43.2
4
5/8
95
3/4
M16
2.3
1 1/2
40
155
22.3
70
32
73
7
16
114.3
49.5
4
3/4
110
7/8
M20
3.2
2
50
165
25.4
84
37
92.1
7
17
127
61.9
8
5/8
110
3/4
M16
4.1
2 1/2
65
190
28.6
100
41
105
7
19
149.2
74.6
8
3/4
120
7/8
M20
5.9
3
80
210
31.8
117
46
127
7
21
168.3
90.7
8
3/4
125
7/8
M20
7.3
Class 1500 Socket Neck Flange Dimensions
Size in Inch
Size in mm
Outer Dia.
Flange Thick.
Hub OD
Flange Length
RF Dia.
RF Height
Socket Depth
PCD
Socket Bore
No of Bolts
Bolt Size UNC
RF Stud Length
Hole Size
ISO Stud Size
Weight in kg
A
B
C
D
E
F
G
H
J
1/2
15
120
22.3
38
32
34.9
7
10
82.6
22.2
4
3/4
110
7/8
M20
1.8
3/4
20
130
25.4
44
35
42.9
7
11
88.9
27.7
4
3/4
115
7/8
M20
2.3
1
25
150
28.6
52
41
50.8
7
13
101.6
34.5
4
7/8
125
1
M24
3.7
1 1/4
32
160
28.6
64
41
63.5
7
14
111.1
43.2
4
7/8
125
1
M24
4.1
1 1/2
40
180
31.8
70
44
73
7
16
123.8
49.5
4
1
140
1 1/8
M27
5.5
2
50
215
38.1
105
57
92.1
7
17
165.1
61.9
8
7/8
145
1
M24
9.8
2 1/2
65
245
41.3
124
64
105
7
19
190.5
74.6
8
1
160
1 1/8
M27
16.4
3
80
265
47.7
133
N/A
127
7
203.2
N/A
8
1 1/8
180
1 1/4
M30
21.8
Disclaimer – Please check with ASME B16.5 Before using.
