BrassMeIn.com: Standard Pipe Dimension Chart based on ASME/ANSI B 36.10




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Standard Pipe Dimension Chart

Based on ASME/ANSI B 36.10, standard for Welded and Seamless Wrought Steel Pipe and ASME/ANSI B36.19, standard for Stainless Steel Pipe

A pipe of any nominal size will have the same outside diameter (O.D.) regardless of wall thickness. The inside diameter (I.D.) will decrease as the schedule specification increases the wall thickness.

Nominal Pipe Size
(inches) 		Outside Diameter
(inches) 		Iron Pipe Size Schedule Stainless Steel Wall Thickness
(inches) 		Inside Diameter
(inches)
1/8 0.405 --
STD
XS		 --
40
80		 10S
40S
80S		 .049
.068
.095		 .307
.269
.215
1/4 0.540 --
STD
XS		 --
40
80		 10S
40S
80S		 .065
.088
.119		 .410
.364
.302
3/8 0.675 --
STD
XS		 --
40
80		 10S
40S
80S		 .065
.091
.126		 .545
.493
.423
1/2 0.840 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.083
.109
.147
.187
.294		 .710
.674
.622
.546
.466
.252
3/4
1.050		 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.083
.113
.154
.219
.308		 .920
.884
.824
.742
.612
.434
1 1.315 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.109
.133
.179
.250
.358		 1.185
1.097
1.049
.957
.815
.599
1 1/4 1.660 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.109
.140
.191
.250
.382		 1.530
1.442
1.380
1.278
1.160
.896
1 1/2 1.900 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.109
.145
.200
.281
.400		 1.770
1.682
1.610
1.500
1.338
1.100
2 2.375 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .065
.109
.154
.218
.344
.436		 2.245
2.157
2.067
1.939
1.687
1.503
2 1/2 2.875 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .083
.120
.203
.276
.375
.552		 2.709
2.635
2.469
2.323
2.125
1.771
3 3.500 --
--
STD
XS
--
XXS		 --
--
40
80
160
--		 5S
10S
40S
80S
--
--		 .083
.120
.216
.300
.438
.600		 3.334
3.260
3.068
2.900
2.624
2.300
3 1/2 4.000 --
--
STD
XS		 --
--
40
80		 5S
10S
40S
80S		 .083
.120
.226
.318		 3.834
3.760
3.548
3.364
4 4.500 --
--
STD
XS
--
--
XXS		 --
--
40
80
120
160
--		 5S
10S
40S
80S
--
--
--		 .083
.120
.237
.337
.438
.531
.674		 4.334
4.260
4.026
3.826
3.624
3.438
3.152
5 5.563 --
--
STD
XS
--
--
XXS		 --
--
40
80
120
160
--		 5S
10S
40S
80S
--
--
--		 .109
.134
.258
.375
.500
.625
.750		 5.345
5.295
5.047
4.813
4.563
4.313
4.063
6 6.625 --
--
STD
XS
--
--
XXS		 --
--
40
80
120
160
--		 5S
10S
40S
80S
--
--
--		 .109
.134
.280
.432
.562
.718
.864		 6.407
6.357
6.065
5.761
5.501
5.187
4.897
8 8.625 --
--
--
--
STD
--
XS
--
--
--
XXS
--		 --
--
20
30
40
60
80
100
120
140
--
160		 5S
10S
--
--
40S
--
80S
--
--
--
--
--		 .109
.148
.250
.277
.322
.406
.500
.594
.719
.812
.875
.90		 8.407
8.329
8.125
8.071
7.981
7.813
7.625
7.437
7.187
7.001
6.875
6.813
10 10.750 --
--
--
--
STD
XS
--
--
--
--
--		 --
--
20
30
40
60
80
100
120
140
160		 5S
10S
--
--
40S
80S
--
--
--
--
--		 .134
.165
.250
.307
.365
.500
.594
.719
.844
1.000
1.125		 10.482
10.420
10.250
10.136
10.020
9.750
9.562
9.312
9.062
8.750
8.500
12 12.75 --
--
--
--
STD
--
XS
--
--
--
--
--
--		 --
--
20
30
--
40
--
60
80
100
120
140
160		 5S
10S
--
--
40S
--
80S
--
--
--
--
--
--		 .156
.180
.250
.330
.375
.406
.500
.562
.688
.844
1.000
1.125
1.312		 12.438
12.390
12.250
12.090
12.000
11.938
11.750
11.626
11.374
11.062
10.750
10.500
10.126
14 14.00 --
--
--
--
STD
--
XS
--
--
--
--
--
--		 --
--
10
20
30
40
--
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--
--
--		 156
.188
.250
.312
.375
.438
.500
.594
.750
.938
1.094
1.250
1.406		 13.688
13.624
13.500
13.376
13.250
13.124
13.000
12.812
12.500
12.124
11.812
11.500
11.188
16 16.00 --
--
--
--
STD
XS
--
--
--
--
--
--		 --
--
10
20
30
40
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--
--		 .165
.188
.250
.312
.375
.500
.656
.844
1.031
1.219
1.438
1.594		 15.670
15.624
15.500
15.376
15.250
15.000
14.688
14.312
13.938
13.562
13.124
12.812
18 18.00 --
--
--
--
STD
--
XS
--
--
--
--
--
--
--		 --
--
10
20
--
30
--
40
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--
--
--
--		 .165
.188
.250
.312
.375
.438
.500
.562
.750
.938
1.156
1.375
1.562
1.781		 17.670
17.624
17.500
17.376
17.250
17.124
17.000
16.876
16.500
16.124
15.688
15.250
14.876
14.438
20 20.00 --
--
--
STD
XS
--
--
--
--
--
--
--		 --
--
10
20
30
40
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--
--		 .188
.218
.250
.375
.500
.594
.812
1.031
1.281
1.500
1.750
1.969		 19.624
19.564
19.500
19.250
19.000
18.812
18.376
17.938
17.438
17.000
16.500
16.062
22 22.00 --
--
--
STD
XS
--
--
--
--
--
--		 --
--
10
20
30
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--		 .188
.218
.250
.375
.500
.875
1.125
1.375
1.625
1.875
2.125		 21.624
21.564
21.500
21.250
21.000
20.250
19.75
19.25
18.75
18.25
17.75
24 24.00 --
--
STD
XS
--
--
--
--
--
--
--
--		 --
10
20
--
30
40
60
80
100
120
140
160		 5S
10S
--
--
--
--
--
--
--
--
--
--		 .218
.250
.375
.500
.562
.688
.969
1.219
1.531
1.812
2.062
2.344		 23.564
23.500
23.250
23.000
22.876
22.624
22.062
21.562
20.938
20.376
19.876
19.312
26 26.00 --
STD
XS		 10
--
20		 --
--
--		 .312
.375
.500		 25.376
25.250
25.000
28 28.00 --
STD
XS
--		 10
--
20
30		 --
--
--
--		 .312
.375
.500
.625		 27.376
27.250
27.000
26.750
30 30.00 --
--
STD
XS
--		 --
10
--
20
30		 5S
10S
--
--
--		 .250
.312
.375
.500
.625		 29.500
29.376
29.250
29.000
28.750
32 32.00 --
STD
XS
--
--		 10
--
20
30
40		 --
--
--
--
--		 .312
.375
.500
.625
.688		 31.376
31.250
31.000
30.750
30.624
34 34.00 --
STD
XS
--
--		 10
--
20
30
40		 --
--
--
--
--		 .344
.375
.500
.625
.688		 33.312
33.250
33.000
32.750
32.624
36 36.00 --
STD
XS
--
--		 10
--
20
30
40		 --
--
--
--
--		 .312
.375
.500
.625
.750		 35.376
35.250
35.000
34.750
34.500
42 42.00 STD
XS
--
--		 --
20
30
40		 --
--
--
--		 .375
.500
.625
.750		 41.250
41.000
40.720
40.500

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