Nominal Pipe Size Chart -
Nominal Pipe Dimension in Inches |
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Nominal in Inch |
OD |
5 |
5s |
10 |
10s |
20 |
30 |
40 |
40s |
Std |
60 |
80 |
80s |
XS |
100 |
120 |
140 |
160 |
XXS |
Nominal in Inch |
1/8 |
0.405 |
|
|
0.049 |
0.049 |
|
|
0.068 |
0.068 |
0.068 |
|
0.095 |
0.095 |
0.095 |
|
|
|
|
|
1/8 |
1/4 |
0.54 |
|
|
0.065 |
0.065 |
|
|
0.088 |
0.088 |
0.088 |
|
0.119 |
0.119 |
0.119 |
|
|
|
|
|
1/4 |
3/8 |
0.675 |
|
|
0.065 |
0.065 |
|
0.073 |
0.091 |
0.091 |
0.091 |
|
0.126 |
0.126 |
0.126 |
|
|
|
|
|
3/8 |
1/2 |
0.84 |
0.065 |
0.065 |
0.083 |
0.083 |
|
0.095 |
0.109 |
0.109 |
0.109 |
|
0.147 |
0.147 |
0.147 |
|
|
|
0.188 |
0.294 |
1/2 |
3/4 |
1.05 |
0.065 |
0.065 |
0.083 |
0.083 |
|
0.095 |
0.113 |
0.113 |
0.113 |
|
0.154 |
0.154 |
0.154 |
|
|
|
0.219 |
0.308 |
3/4 |
1 |
1.315 |
0.065 |
0.065 |
0.109 |
0.109 |
|
0.114 |
0.133 |
0.133 |
0.133 |
|
0.179 |
0.179 |
0.179 |
|
|
|
0.25 |
0.358 |
1 |
1 1/4 |
1.66 |
0.065 |
0.065 |
0.109 |
0.109 |
|
0.117 |
0.14 |
0.14 |
0.14 |
|
0.191 |
0.191 |
0.191 |
|
|
|
0.25 |
0.382 |
1 1/4 |
1 1/2 |
1.9 |
0.065 |
0.065 |
0.109 |
0.109 |
|
0.125 |
0.145 |
0.145 |
0.145 |
|
0.2 |
0.2 |
0.2 |
|
|
|
0.281 |
0.4 |
1 1/2 |
2 |
2.375 |
0.065 |
0.065 |
0.109 |
0.109 |
|
0.125 |
0.154 |
0.154 |
0.154 |
|
0.218 |
0.218 |
0.218 |
|
|
|
0.344 |
0.436 |
2 |
2 1/2 |
2.875 |
0.083 |
0.083 |
0.12 |
0.12 |
|
0.188 |
0.203 |
0.203 |
0.203 |
|
0.276 |
0.276 |
0.276 |
|
|
|
0.375 |
0.552 |
2 1/2 |
3 |
3.5 |
0.083 |
0.083 |
0.12 |
0.12 |
|
0.188 |
0.216 |
0.216 |
0.216 |
|
0.3 |
0.3 |
0.3 |
|
|
|
0.438 |
0.6 |
3 |
3 1/2 |
4 |
0.083 |
0.083 |
0.12 |
0.12 |
|
0.188 |
0.226 |
0.226 |
0.226 |
|
0.318 |
0.318 |
0.318 |
|
|
|
|
0.636 |
3 1/2 |
4 |
4.5 |
0.083 |
0.083 |
0.12 |
0.12 |
|
0.188 |
0.237 |
0.237 |
0.237 |
|
0.337 |
0.337 |
0.337 |
|
0.438 |
|
0.531 |
0.674 |
4 |
5 |
5.563 |
0.109 |
0.109 |
0.134 |
0.134 |
|
|
0.258 |
0.258 |
0.258 |
|
0.375 |
0.375 |
0.375 |
|
0.5 |
|
0.625 |
0.75 |
5 |
6 |
6.625 |
0.109 |
0.109 |
0.134 |
0.134 |
|
|
0.28 |
0.28 |
0.28 |
|
0.432 |
0.432 |
0.432 |
|
0.562 |
|
0.719 |
0.864 |
6 |
8 |
8.625 |
0.109 |
0.109 |
0.148 |
0.148 |
0.25 |
0.277 |
0.322 |
0.322 |
0.322 |
0.406 |
0.5 |
0.5 |
0.5 |
0.594 |
0.719 |
0.812 |
0.906 |
0.875 |
8 |
10 |
10.75 |
0.134 |
0.134 |
0.165 |
0.165 |
0.25 |
0.307 |
0.365 |
0.365 |
0.365 |
0.5 |
0.594 |
0.5 |
0.5 |
0.719 |
0.844 |
1 |
1.125 |
1 |
10 |
12 |
12.75 |
0.156 |
0.156 |
0.18 |
0.18 |
0.25 |
0.33 |
0.406 |
0.375 |
0.375 |
0.562 |
0.688 |
0.5 |
0.5 |
0.844 |
1 |
1.125 |
1.312 |
1 |
12 |
14 |
14 |
0.156 |
0.156 |
0.25 |
0.188 |
0.312 |
0.375 |
0.438 |
0.375 |
0.375 |
0.594 |
0.75 |
0.5 |
0.5 |
0.938 |
1.094 |
1.25 |
1.406 |
|
14 |
16 |
16 |
0.165 |
0.165 |
0.25 |
0.188 |
0.312 |
0.375 |
0.5 |
0.375 |
0.375 |
0.656 |
0.844 |
0.5 |
0.5 |
1.031 |
1.219 |
1.438 |
1.594 |
|
16 |
18 |
18 |
0.165 |
0.165 |
0.25 |
0.188 |
0.312 |
0.438 |
0.562 |
0.375 |
0.375 |
0.75 |
0.938 |
0.5 |
0.5 |
1.156 |
1.375 |
1.562 |
1.781 |
|
18 |
20 |
20 |
0.188 |
0.188 |
0.25 |
0.218 |
0.375 |
0.5 |
0.594 |
0.375 |
0.375 |
0.812 |
1.031 |
0.5 |
0.5 |
1.281 |
1.5 |
1.75 |
1.969 |
|
20 |
22 |
22 |
0.188 |
0.188 |
0.25 |
0.218 |
0.375 |
0.5 |
|
|
0.375 |
0.875 |
1.125 |
|
0.5 |
1.375 |
1.625 |
1.875 |
2.125 |
|
22 |
24 |
24 |
0.218 |
0.218 |
0.25 |
0.25 |
0.375 |
0.562 |
0.688 |
0.375 |
0.375 |
0.969 |
1.219 |
0.5 |
0.5 |
1.531 |
1.812 |
2.062 |
2.344 |
|
24 |
26 |
26 |
|
|
0.312 |
|
0.5 |
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
28 |
28 |
|
|
0.312 |
|
0.5 |
0.625 |
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
30 |
30 |
0.25 |
0.25 |
0.312 |
0.312 |
0.5 |
0.625 |
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
32 |
32 |
|
|
0.312 |
|
0.5 |
0.625 |
0.688 |
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
34 |
34 |
|
|
0.312 |
|
0.5 |
0.625 |
0.688 |
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
36 |
36 |
|
|
0.312 |
|
0.5 |
0.625 |
0.75 |
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
38 |
38 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
40 |
40 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
42 |
42 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
44 |
44 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
46 |
46 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
48 |
48 |
|
|
|
|
|
|
|
|
0.375 |
|
|
|
0.5 |
|
|
|
|
|
|
Nominal in Inch |
OD |
5 |
5s |
10 |
10s |
20 |
30 |
40 |
40s |
Std |
60 |
80 |
80s |
XS |
100 |
120 |
140 |
160 |
XXS |
Nominal in Inch |
ASME B36.10M-2015:
Welded and Seamless Wrought Steel Pipe |
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ASME B36.19M-2004:
Stainless Steel Pipe (For 5S,10S,40S and 80S) |
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Don't get confused
between 3 1/2 inch nominal with 3.5 inch OD, 4" nominal with 4.000"
OD |