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FLANGES – DIMENSIONS OF WELDING ENDS ASME B16.5

Bevel for wall thicknesses (t) from 0.19″ to 0.88″, inclusive. Bevel for wall thicknesses (t) greater than 0.88″
Nominal
Pipe
Size
Wall Thickness(t) Inside Diameter Identification Nominal
Pipe
Size
Wall Thickness(t) Inside Diameter Identification
in. mm in. mm Std.*
XH;XXH
Schedule
Nr.
in. mm in. mm Std.*
XH;XXH
Schedule
Nr.
1/2″ 0.109
0.147
0.188
0.294
2.8
3.7
4.8
7.5
0.622
0.546
0.464
0.252
15.8
13.9
11.8
6.4
Std.
XHXXH
40
80
160
5” 0.258
0.375
0.500
0.625
0.750
6.6
9.5
12.7
15.9
19.1
5.047
4.813
4.563
4.313
4.063
128.2
122.3
115.9
109.6
103.2
Std.
XH
40
80
120
160
¾” 0.113
0.154
0.219
0.308
2.9
3.9
5.6
7.8
0.824
0.742
0.612
0.434
20.9
18.8
15.5
11.0
Std.
XHXXH
40
80
160
6” 0.280
0.432
0.562
0.719
0.864
7.1
11.0
14.3
18.3
21.9
6.065
5 761
5 501
5 189
4.897
154.1
146.3
139.7
131.8
124.4
Std.
XHXXH
40
80
120
160
1” 0.133
0.179
0.250
0.358
3.4
4.5
6.4
9.1
1.049
0.957
0.815
0.599
26.6
24.3
20.7
15.2
Std.
XHXXH
40
80
160
8” 0.250
0.277
0.322
0.406
0.500
0.594
0.719
0.812
0.875
0.906
6.4
7.0
8.2
10.3
12.7
15.1
18.3
20.6
22.2
23.0
8.125
8.071
7.981
7.813
7.625
7.439
7.189
7.001
6.875
6.813
206.4
205.0
202.7
198.5
193.7
189.0
182.6
177.8
174.6
173.1
Std.

XH

XXH

20
30
40
60
80
100
120
140160
1 ¼” 0.140
0.191
0.250
0.382
 3.4
4.9
6.4
9.7
1.380
1.278
1.160
0.896
35.1
32.5
29.5
22.8
Std.
XHXXH
40
80
160
10” 0.250
0.307
0.365
0.500
0.594
0.719
0.844
1.000
1.125
6.4
7.8
9.3
12.7
15.1
18.3
21.4
25.4
28.6
10.250
10.136
10.020
9.750
9.564
9.314
9.064
8.750
8.500
260.4
257.5
254.5
247.7
242.9
236.6
230.2
222.3
215.9
Std.
XHXXH
20
30
40
60
80
100
120
140
160
1 ½” 0.145
0.200
0:281
0.400
3.7
5.1
7.1
10.2
1.610
1.500
1.338
1.100
 40.9
38.1
34.0
27.9
Std.
XHXXH
40
80
160
2″ 0.154
0.218
0.344
0.436
3.9
5.5
8.7
11.1
2.067
1.939
1.687
1.503
52.5
49.3
42.8
38.2
Std.
XHXXH
40
80
160
21/2“ 0.203
0.276
0.375
0.552
5.2
7.0
9.5
14.0
2.469
2.323
2.125
1.771
62.7
59.0
54.0
45.0
Std.
XHXXH
40
80
160
3 0.216
0.300
0.438
0.600
5.5
7.6
11.1
15.2
3.068
2.900
2.624
2.300
77.9
73.7
66.6
58 4
Std.
XHXXH
40
80
160
3 ½ 0.226
0.318
5.7
8.1
3.548
3.364
90.1
85.4
Std.
XH
40
80
4″ 0.237
0.337
0.438
0.531
0.674
6.0
8.6
11.1
13.5
17.1
4.026
3.826
3.624
3.438
3.152
102.3
97.2
92.0
87.3
80.1
Std.
XHXXH
40
80
120
160
PIPELINE HUB
In addition, when the minimum yield strength of the hub portion of any
flange or its representative test specimen is less than that specified
for the pipe to be matched, the minimum thickness of the hub at the
welding end shall be such that the product of its thickness times its
yield strength (at welding end) shall at least equal the product of the
specified nominal wall thickness and minimum specified yield strength
of the pipe to be matched. Under these conditions, sizes NPS 24 and
smaller flanges may also have a single taper hub and the outside
diameter of the hub at the base may be modified in accordance with
ASME Section VIII Division 1 Appendix 2 calculations.

 

Nominal
Pipe
Size
Wall Thickness(t) Inside Diameter Identification Nominal
Pipe
Size
Wall Thickness(t) Inside Diameter Identification
in. mm in. mm Std.*
XH;XXH
Schedule
Nr.
in. mm in. mm Std.*
XH;XXH
Schedule
Nr.
12” 0.250
0.330
0.375
0.406
0.500
0.562
0.688
0.844
1.000
1.125
1.312
6.4
8.4
9.5
10.3
12.7
14.3
17.5
21.4
25.4
28.6
33.3
12.250
12.090
12.000
11.938
11.750
11.626
11.376
11.064
10.750
10.500
10.126
311.2
307.1
304.8
303.2
298.5
295.3
289.0
281.0
273.1
266.7
257.2
Std.

XH

XXH

20
304060
80
100
120
140
160
24”  0.250
0.375
0.500
0.562
0.688
0.969
1.219
1.531
1.812
2.062
2.344
6.4
9.5
12.7
14.3
17.5
24.6
31.0
38.9
46.0
52.4
59.5
23.500
23.250
23.000
22.876
22.626
22.064
21.564
20.938
20.376
19.876
19.314
596.9
590.6
584.2
581.1
574.7
560.4
547.7
531.8
517.6
504.9
490.6
Std.
XH
10
2030
40
60
80
100
120
140
160
14” 0.250
0.312
0.375
0.438
0.500
0.594
0.750
0.938
1.094
1.250
1.406
 6.4
7.9
9.5
11.1
12.7
15.1
19.1
23.8
27.8
31.8
35.7
13.500
13.376
13.250
13.124
13.000
12.814
12.500
12.126
11.814
11.500
11.188
342.9
339.8
336.6
333.3
330.2
325.5
317.5
308.0
300.1
292.1
284.2
Std.

XH

10
20
30
4060
80
100
120
140
160
26” 0.312
0.375
0.500
7.9
9.5
12.7
25.376
25.250
25.000
644.6
641.4
635.0
Std.
XH
10

20

16” 0.250
0.312
0.375
0.500
0.656
0.844
1.031
1.219
1.438
1.594
6.4
7.9
9.5
12.7
16.7
21.4
26.2
31.0
36.5
40.5
15.500
15.376
15.250
15.000
14.688
14.314
13.938
13.564
13.124
12.814
393.7
390.6
387.4
381.0
373.1
363.6
354.0
344.5
333.3
325.5
Std.
XH
10
20
30
40
60
80
100
120
140
160
28” 0.312
0.375
0.500
0.625
7.9
9.5
12.7
15.9
27.376
27.250
27.000
26.750
695.4
692.2
685.8
679.5
Std.
XH
10

20
30

18“ 0.250
0.312
0.375
0.438
0.500
0.562
0.750
0.938
1.156
1.375
1.562
1.781
6.4
7.9
9.5
11.1
12.7
14.3
19.1
23.8
29.4
34.9
39.7
45.2
17.500
17.376
17.250
17.124
17.000
16.876
16.500
16.126
15.688
15.250
14.876
14.438
444.5
441.4
438.2
434.9
431.8
428.7
419.1
409.6
398.5
387.4
377.9
366.7
Std.

XH

10
203040
60
80
100
120
140
160
30“ 0.312
0.375
0.500
0.625
7.9
9.5
12.7
15.9
29.376
29.250
29.000
28.750
746.2
743.0
736.6
730.3
Std.
XH
10

20
30

20” 0.250
0.375
0.500
0.594
0.812
1.031
1.281
1.500
1.750
1.969
6.4
9.5
12.7
15.1
20.6
26.2
32.5
38.1
44.5
50.0
19.500
19.250
19.000
18.814
18.376
17.938
17.438
17.000
16.500
16.064
495.3
489.0
482.6
477.9
466.8
455.6
442.9
431.8
419.1
408.0
Std.
XH
10
20
30
40
60
80
100
120
140
160
32” 0.312
0.375
0.500
0.625
0.688
7.9
9.5
12.7
15.9
17.5
31.376
31.250
31.000
30.750
30.624
797.0
793.8
787.4
781.1
777.8
Std.
XH
10

20
30
40

34” 0.312
0.375
0.500
0 625
0.688
7.9
9.5
12.7
15.9
17.5
33.376
33.250
33.000
32.750
32.624
847.8
844.6
838.2
831.9
828.6
Std.
XH
10

20
30
40

36” 0.312
0.375
0.500
0.625
0.750
7.9
9.5
12.7
15.9
19.1
35.376
35.250
35.000
34.750
34.500
898.6
895.4
889.0
882.7
876.3
Std.
XH
10

20
30
40

38” 0.375
0.500
9.5
12.7
37.250
37.000
946.2
939.8
Std.
XH
40” 0.375
0.500
9.5
12.7
39.250
39.000
997.0
990.6
Std.
XH
42” 0.375
0.500
9.5
12.7
41.250
41.000
1047.8
1041.4
Std.
XH
44”  0.375
0.500
9.5
12.7
43.250
43.000
1098.6
1092.2
Std.
XH
46” 0.375
0.500
9.5
12.7
45.250
45.000
1149.4
1143.0
Std.
XH
48” 0.375
0.500
9.5
12.7
47.250
47.000
1200.2
1193.8
Std.
XH

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  • PVF Resources
  • About Us
  • PRODUCTS
    • FLANGES
    • NOZZLES
    • BUTTWELD FITTINGS
    • FORGE STEEL FITTINGS
    • BULL PLUGS
    • NIPPLES
    • Swages
    • MALLEABLE and CAST IRON FITTINGS
    • GASKETS
    • STUD BOLTS and FASTENERS
    • PIPES
    • Valves
    • OD and ID HEADS
    • HAMMER UNIONS
  • DIM and WEIGHT
    • FLANGES TYPES
      • LAP JOINT FLANGES ASME B16.5
      • SLIP ON FLANGES ASME B16.5
      • SOCKET FLANGES ASME B16.5
      • BLIND FLANGES ASME B16.5
      • THREADED FLANGES ASME B16.5
      • WELDING NECK FLANGES ASME B16.5
      • ORIFICE FLANGES B16.36
      • WELDING NECK FLANGES ASME B16.5
      • LARGE DIAMETER FLANGES ASME B16.47 ASME B16.36
      • LARGE DIAMETER FLANGES SERIES A / MSS SP44 ASME B16.47
      • LARGE DIAMETER FLANGES SERIES B / API 605 ASME B16.47
      • INDUSTRY STANDARD FLANGES
      • AWWA STANDARDS
  • MACHINING SERVICES
  • CONTACT
  • DOCUMENT CENTRAL
  • Customer Login

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