Designated Metric Size |
Gauge Size |
Range of Outside Diameters |
Inside Diameter Tubing |
|||
Normal- Walled |
Thin-Walled |
Extra-Thin- Walled |
||||
Min. |
Max. |
Min. |
Min. |
Min. |
||
0.20 |
33 |
0.203 |
0.216 |
0.089 |
0.105 |
--- |
0.23 |
32 |
0.229 |
0.241 |
0.089 |
0.105 |
--- |
0.25 |
31 |
0.254 |
0.267 |
0.114 |
0.125 |
--- |
0.30 |
30 |
0.298 |
0.320 |
0.133 |
0.165 |
--- |
0.33 |
29 |
0.324 |
0.351 |
0.133 |
0.190 |
--- |
0.36 |
28 |
0.349 |
0.370 |
0.133 |
0.190 |
--- |
0.40 |
27 |
0.400 |
0.420 |
0.184 |
0.241 |
--- |
0.45 |
26 |
0.440 |
0.470 |
0.232 |
0.292 |
--- |
0.50 |
25 |
0.500 |
0.530 |
0.232 |
0.292 |
--- |
0.55 |
24 |
0.550 |
0.580 |
0.280 |
0.343 |
--- |
0.60 |
23 |
0.600 |
0.673 |
0.317 |
0.370 |
0.460 |
0.70 |
22 |
0.698 |
0.730 |
0.390 |
0.440 |
0.522 |
0.80 |
21 |
0.800 |
0.830 |
0.490 |
0.547 |
0.610 |
0.90 |
20 |
0.860 |
0.920 |
0.560 |
0.635 |
0.687 |
1.10 |
19 |
1.030 |
1.100 |
0.648 |
0.750 |
0.850 |
1.20 |
18 |
1.200 |
1.300 |
0.790 |
0.910 |
1.041 |
1.40 |
17 |
1.400 |
1.510 |
0.950 |
1.156 |
1.244 |
1.60 |
16 |
1.600 |
1.690 |
1.100 |
1.283 |
1.390 |
1.80 |
15 |
1.750 |
1.900 |
1.300 |
1.460 |
1.560 |
2.10 |
14 |
1.950 |
2.150 |
1.500 |
1.600 |
1.727 |
2.40 |
13 |
2.300 |
2.500 |
1.700 |
1.956 |
--- |
2.70 |
12 |
2.650 |
2.850 |
1.950 |
2.235 |
--- |
3.00 |
11 |
2.950 |
3.150 |
2.200 |
2.464 |
--- |
3.40 |
10 |
3.330 |
3.500 |
2.500 |
2.819 |
--- |