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150 LB Flanges

 
Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness
of flange
Overall         Length
Bolt 
Circle
No. and
Size of
Holes
O.D. of
raised
face
Welding
neck
Slip-on
& socket
welding
Lap Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
89
11.2
47.6
15.9
15.9
60.5
4
15
35
3/4
117
15.9
57.2
25.4
25.4
82.5
4
15
43
1
108
14.3
55.6
17.5
17.5
79.5
4
15
51
1.1/4
117
15.9
57.2
20.6
20.6
89.0
4
15
64
1.1/2
127
17.5
61.9
22.2
22.2
98.5
4
15
73
2
152
19.1
63.5
25.4
25.4
120.5
4
19
92
2.1/2
178
22.3
69.8
28.6
28.6
139.5
4
19
105
3
190
23.9
69.8
30.2
30.2
152.5
4
19
127
3.1/2
216
23.9
71.4
31.8
31.8
178.0
8
19
140
4
229
23.9
86.2
33.3
33.3
190.5
8
19
157
5
254
23.9
88.9
36.5
36.5
216.0
8
22
186
6
279
25.4
88.9
39.7
39.7
241.5
8
22
216
8
343
28.6
101.6
44.4
44.4
298.5
8
22
270
10
406
30.2
101.6
49.2
49.2
362.0
12
25
324
12
483
31.8
114.3
55.6
55.6
432.0
12
25
381
14
533
35.0
127.0
57.2
79.4
476.0
12
29
413
16
597
36.6
127.0
63.5
87.3
539.5
16
29
470
18
635
39.7
139.7
68.3
96.8
578.0
16
32
533
20
698
42.9
144.5
73.0
103.2
635.0
20
32
584
24
813
47.7
152.4
82.6
111.1
749.5
20
35
692

 

 




 

 

 

 

 

 

 

 

 

 

   

 

300 LB Flanges

 

Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness
of flange
Overall Length
Bolt 
Circle
No. and 
Size of
Holes
O.D. of
raised
face
Welding 
neck
Slip-on
& socket
welding
Lap Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
95
14.3
52.4
22.2
22.2
666.5
4
15
35
3/4
117
15.9
57.2
25.4
25.4
82.4
4
19
43
1
124
17.5
61.9
27.0
27.0
89.0
4
19
51
1-1/4
133
19.1
65.1
27.0
27.0
98.5
4
19
64
1-1/2
156
20.7
68.3
30.2
30.2
114.5
4
22
73
2
165
22.3
69.8
33.3
33.3
127.0
8
19
92
2-1/2
190
25.4
76.2
38.1
38.1
149.0
8
22
105
3
210
28.6
79.4
42.9
42.9
168.0
8
22
127
4
254
318
85.7
47.6
47.6
200.0
8
22
157
5
279
35.0
98.4
50.8
50.8
235.0
8
22
186
6
313
36.6
98.4
52.4
52.4
270.0
12
22
216
6
381
413
111.1
61.9
91.9
330.0
12
25
270
10
444
47.7
117.5
66.7
95.3
387.5
16
29
324
12
521
50.8
130.2
73.0
101.6
451.0
16
32
381
14
584
54.0
142.9
76.2
111.1
514.5
20
32
413
16
648
57.2
146.0
82.6
120.7
571.5
20
35
470
18
711
60.4
158.8
88.9
130.2
628.5
24
35
533
20
775
63.5
161.9
95.2
139.7
686.0
24
35
584
24
914
69.9
168.3
106.4
152.4
843.0
24
41
692
   

 

600 LB. Flanges

 

Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness of
flange
Overall Length
Bolt Circle
No. and
Size of
Holes
O.D. of
raised
face
Welding neck
Slip-on 
& socket
welding
Lap Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
95
14.3
52.4
22.2
22.2
66.5
4
15
35
3/4
117
15.9
57.2
25.4
25.4
82.5
4
19
43
1
124
17.5
61.9
27.0
27.0
89.0
4
19
51
1-1/4
133
20.7
66.7
28.6
28.6
98.5
4
19
64
1-1/2
156
22.3
69.8
31.8
31.8
114.5
4
22
73
2
165
25.4
73.0
36.5
36.5
127.0
8
19
92
2-1/2
190
28.6
79.4
41.3
41.3
149.0
8
22
105
3
210
31.8
82.6
46.0
46.0
168.0
8
22
127
3-1/2
229
35.0
85.7
49.2
49.2
184.0
8
25
140
4
273
38.1
101.6
54.0
54.0
216.0
8
25
157
5
330
44.5
114.3
60.3
60.3
266.5
8
29
186
6
356
47.7
117.5
66.7
66.7
292.0
12
29
216
8
419
55.6
133.4
76.2
76.2
349.0
12
32
270
10
508
63.5
152.4
85.7
115.1
432.0
16
85
324
12
559
66.7
155.6
92.1
111.1
489.0
20
35
381
14
603
69.9
165.1
93.7
117.5
527.0
20
38
413
16
686
76.2
177.8
106.4
127.0
603.0
20
41
470
18
743
82.6
184.2
117.6
139.7
654.0
20
45
533
20
813
88.9
190.5
127.0
165.1
724.0
24
45
584
24
940
101.6
203.2
139.7
184.2
838.0
24
51
692

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

900 LB. Flanges

 

Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness of
flange
Overall Length
Bolt
Circle
No. and 
Size of 
Holes
O.D. of
raised
face
Welding neck
Slip-on
& 
socket 
welding
Lap Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
121
22.3
60.3
31.8
31.8
82.5
4
22
35
3/4
130
25.4
69.8
34.9
34.9
89.0
4
22
43
1
149
28.6
78.0
41.3
41.3
101.5
4
25
51
1-1/4
159
28.6
78.0
41.3
41.3
111.0
4
25
64
1-1/2
178
31.8
82.6
44.4
44.4
124.0
4
29
78
2
216
38.1
101.6
57.2
57.2
165.0
8
25
92
2-1/2
244
41.3
104.8
63.5
63.5
190.5
8
29
105
8
241
38.1
101.6
54.0
54.0
190.5
8
25
127
3-1/2
4
292
44.5
114.3
69.8
69.8
235.0
8
32
157
5
349
50.8
127.0
79.4
79.4
279.5
8
35
186
6
381
55.6
189.7
85.7
85.7
317.5
12
32
216
8
470
68.5
161.9
101.8
114.3
393.5
12
38
270
10
546
69.9
184.2
108.0
127.0
470.0
16
38
324
12
610
79.4
200.0
117.5
142.9
533.5
20
38
381
14
584
54.0
142.9
76.2
111.1
514.5
20
32
413
16
711
60.4
158.8
88.9
130.2
628.5
24
35
533
20
775
63.5
161.9
95.2
139.7
686.0
24
35
584
24
914
69.9
168.3
106.4
152.4
843.0
24
41
692

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

1500 LB. Flanges

 

Normal
pipe
size
Outside
dia. of
flange
Minimum 
thickness
of flange
Overall          Length
Bolt 
Circle
No. and
Size of 
Holes
O.D. 
of raised
face
Welding
neck
Slip-on
& 
socket 
welding
Lap 
Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
12.1
22.3
60.3
31.8
31.8
82.5
4
22
35
3/4
130
25.4
69.8
34.9
34.9
89.0
4
22
43
1
149
28.6
73.0
41.3
41.3
101.5
4
25
51
1-1/4
159
28.6
73.0
41.3
41.3
111.0
4
25
64
1-1/2
178
31.8
82.6
44.4
44.4
124.0
4
29
73
2
216
38.1
101.6
57.2
57.2
165.0
8
25
92
2-1/2
244
41.3
104.8
63.5
63.5
190.5
8
29
105
3
267
47.7
117.5
73.0
73.0
203.0
8
32
127
3-1/2
4
311
54.0
123.8
90.5
90.5
241.5
8
35
157
5
375
73.1
155.5
104.8
104.8
292.0
8
41
186
6
394
82.6
171.4
119.1
119.1
317.5
12
38
216
8
483
92.1
212.7
142.9
142.9
393.5
12
45
270
10
584
108.0
254.0
158.8
177.8
482.5
12
51
324
12
673
123.9
282.9
181.0
219.1
571.5
16
54
381
14
749
133.4
298.4
-----
241.3
635.0
16
60
413
16
826
146.1
311.2
-----
260.4
705.0
16
51
470
18
914
162.0
327.0
------
276.2
474.5
16
73
538
20
984
117.8
355.4
-----
292.1
832.0
16
80
584
24
1168
203.2
406.4
-----
330.2
990.5
16
92
692

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

2500 LB. Flanges

 

Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness
of flange
Overall          Length
Bolt
Circle
No. and
Size of
Holes
O.D. of
raised
face
Welding
neck
Slip-on
&
socket
welding
Lap
Joint
O
Q
Y
Diam.
No.
dia.
R
1/2
133.4
30.2
73.0
39.7
39.7
88.9
4
22
34.9
3/4
139.7
31.8
79.4
42.9
42.9
95.3
4
22
42.9
1
158.8
34.9
88.9
47.6
47.6
108.0
4
25
50.8
1-1/4
184.2
38.1
95.3
52.4
52.4
130.2
4
29
63.5
1-1/2
203.2
44.5
111.1
60.3
60.3
146.0
4
32
73.0
2
235.0
50.8
127.0
69.9
69.9
171.5
8
29
92.1
2-1/2
266.7
57.2
142.9
79.4
79.4
196.9
8
32
104.8
3
304.8
66.7
168.3
92.1
92.1
228.6
8
35
127.0
3-1/2
4
355.6
76.2
190.5
108.0
108.0
273.0
8
41
157.2
5
419.1
92.1
228.6
130.2
130.2
323.9
8
48
185.7
6
482.6
108.0
273.1
152.4
152.4
268.3
8
54
215.9
8
552.5
127.0
317.5
177.8
177.8
438.2
12
54
269.9
10
673.1
165.1
419.1
228.6
228.6
539.8
12
67
323.9
12
762.0
184.2
463.6
254.0
254.0
619.1
12
73
381.03
14
---
---
---
---
---
---
--
---
---
16
---
---
---
---
---
---
--
---
---
18
---
---
---
---
---
---
--
---
--
20
---
---
---
---
---
---
--
---
--
24
---
---
---
---
---
---
--
---
--

   

 

Welding Neck Flange Bores

 

Nom.
pipe
Size
Outside
Diam
Light
Wall
6
Sched.
20
Sched.
30
Std.
Wall
Sched.
40
Sched.
60
Extra
Strong
Sched.
80
Sched.
100
Sched.
120
Sched.
140
Sched.
160
 Double
Extra
Strong
1/2
3/4
1
0.840
1.050
1.315
.674
.884
1.097
.....
.....
....
.....
.....
....
0.622
0.824
1.049
0.622
0.824
1.049
.....
.....
....
0.546
0.742
0.957
0.546
0.742
0.957
.....
.....
....
.....
.....
....
.....
.....
....
0.464
0.612
0.815
 0.252
0.434
0.599
1-1/4
1-1/2
2
1.660
1.900
2.375
1.442
1.682
2.157
.....
.....
....
.....
.....
....
1.380
1.610
2.067
1.380
1.610
2.067
.....
.....
....
1.278
1.500
1.939
1.278
1.500
1.939
.....
.....
....
.....
.....
....
.....
.....
....
1.160
1.338
1.687
 0.896
1.100
1.503
2-1/2
3
3-1/2		 2.875
3.500
4.000		 2.635
3.260
3.760		 .....
.....
....		 .....
.....
....		 2.469
3.068
3.548		 2.469
3.068
3.548		 .....
.....
....		 2.323
2.900
3.364		 2.323
2.900
3.364		 .....
.....
....		 ....
....
....		 .....
.....
....		 2.125
2.624
....		 1.771
2.300
2.728
4
5
6
8		 4.500
5.563
6.625
8.625		 4.260
5.295
6.357
8.329		 ...
...
...
8.125		 ...
...
...
8.071		 4.026
5.047
6.065
7.981		 4.026
5.047
6.065
7.981		 ...
....
...
7.813		 3.826
4.813
5.761
7.625		 3.826
4.813
5.761
7.625		 ...
...
...
7.437		 3.624
4.563
5.501
7.187		 ...
...
...
7.001		 3.438
4.313
5.187
6.813		 3.152
4.063
4.897
6.875
10
12
14
16		 10.750
12.750
14.000
16.000		 10.420
12.390
13.500
15.500		 10.250
12.250
13.376
15.376		 10.136
12.090
13.250
15.250		 10.020
12.000
13.250
15.250		 10.020
11.938
13.124
15.000		 9.750
11.626
12.812
14.688		 9.750
11.750
13.000
15.000		 9.562
11.374
12.500
14.312		 9.312
11.062
12.124
13.938		 0.062
10.750
11.814
13.564		 8.750
10.500
11.500
13.124		 8.500
10.500
11.500
13.124		 8.750
10.750
....
....

18
20
24

 18.000
20.000
24.000		 17.500
19.500
23.500		 17.376
19.250
23.250		 17.124
19.000
22.876		 17.250
19.250
23.250		 16.876
18.812
22.624		 16.500
18.376
22.062		 17.000
19.000
23.000		 16.124
17.938
21.562		 15.688
17.438
20.938		 15.250
17.000
20.376		 14.876
16.500
19.876		 14.438
16.062
19.312		 ....
....
....
30
36
42		 30.000
36.000
42.000		 29.376
35.376
......		 29.000
35.000		 28.750
34.750		 29.250
35.250
41.250		 ....
34.500
....		 ....
.....
....		 29.000
35.000
41.000		 ....
.....
....		 ....
.....
....		 ....
.....
....		 ....
.....
....		 ....
.....
....		 ....
.....
....