NOMINAL TUBE DIMENSION CHARTS (BWG & SWG)

TABLE TO DETERMINE NOMINAL TUBE ID’S - BIRMINGHAM WIRE GAUGE (BWG)

TABLE TO DETERMINE NOMINAL TUBE ID’S - BIRMINGHAM WIRE GAUGE (BWG)
Wall thickness Tube OD (in/mm)
BWG Decimal in/mm 3/8 1/2 5/8 3/4 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2 1 5/8 1 3/4 2 2 1/2
9.53 12.70 15.88 19.05 22.23 25.40 28.58 31.75 34.93 38.10 41.28 44.45 50.80 63.50
8 0.165 0.045 0.170 0.295 0.420 0.545 0.670 0.795 0.920 1.045 1.170 1.295 1.420 1.670 2.170
4.190 1.14 4.32 7.49 10.67 13.84 17.02 20.19 23.37 26.54 29.72 32.89 36.07 42.42 55.12
9 0.148 0.079 0.204 0.329 0.454 0.579 0.704 0.829 0.954 10.79 1.204 1.329 1.454 1.704 2.204
3.760 2.01 5.18 8.36 11.53 14.71 17.88 21.06 24.23 27.41 30.58 33.76 36.93 43.28 55.98
10 0.134 0.107 0.232 0.357 0.482 0.607 0.732 0.857 0.982 1.107 1.232 1.357 1.482 1.732 2.232
3.400 2.72 5.89 9.07 12.24 15.42 18.59 21.77 24.94 28.12 31.29 34.47 37.64 43.99 56.69
11 0.120 0.135 0.260 0.385 0.510 0.635 0.760 0.885 1.010 1.135 1.260 1.385 1.510 1.760 2.260
3.050 3.43 6.60 9.78 12.95 16.13 19.30 22.48 25.65 28.83 32.00 35.18 38.35 44.70 57.40
12 0.109 0.157 0.282 0.407 0.532 0.657 0.782 0.907 1.032 1.157 1.282 1.407 1.532 1.782 2.282
2.770 3.99 7.16 10.34 13.51 16.69 19.86 23.04 26.21 29.39 32.56 35.74 38.91 45.26 57.96
13 0.095 0.185 0.310 0.435 0.560 0.685 0.810 0.935 1.060 1.185 1.310 1.435 1.560 1.810 1.310
2.410 4.70 7.87 11.05 14.22 17.40 20.57 23.75 26.92 30.10 33.27 36.45 39.62 45.97 58.67
14 0.083 0.209 0.334 0.459 0.584 0.709 0.834 0.959 1.084 1.209 1.334 1.459 1.584 1.834 2.334
2.110 5.31 8.48 11.66 14.83 18.01 21.18 24.36 27.53 30.71 33.88 37.06 40.23 46.58 59.28
15 0.072 0.231 0.356 0.481 0.606 0.731 0.856 0.981 1.106 1.231 1.356 1.481 1.606 1.856 2.356
1.830 5.87 9.04 12.22 15.39 18.57 21.74 24.92 28.09 31.27 34.44 37.62 40.79 47.14 59.84
16 0.065 0.245 0.370 0.495 0.620 0.745 0.870 0.995 1.120 1.245 1.370 1.495 1.620 1.870 2.370
1.650 6.22 9.40 12.57 15.75 18.92 22.10 25.27 28.45 31.62 34.80 37.97 41.15 47.50 60.20
17 0.058 0.259 0.384 0.509 0.634 0.759 0.884 1.09 1.134 1.259 1.374 1.509 1.634 1.884 2.384
1.470 6.58 9.75 12.93 16.10 19.28 22.45 25.63 28.80 31.98 35.15 38.33 41.50 47.85 60.55
18 0.049 0.277 0.402 0.527 0.652 0.777 0.902 1.027 1.152 1.277 1.402 1.527 1.652 1.902 2.402
1.240 7.04 10.21 13.39 16.56 19.74 22.91 26.09 29.26 32.44 35.61 38.79 41.96 48.31 61.01
19 0.042 0.291 0.416 0.541 0.666 0.791 0.916 1.041 1.166 1.291 1.416 1.541 1.666 1.916 2.416
1.070 7.39 10.57 13.74 116.92 20.09 23.27 26.44 29.62 32.79 35.97 39.14 42.32 48.67 61.37
20 0.035 0.305 0.430 0.555 0.680 0.805 0.930 1.055 1.180 1.305 1.430 1.55 1.680 1.930 2.430
0.890 7.75 10.92 14.10 17.27 20.45 23.62 26.80 29.97 33.15 36.32 39.50 42.67 49.02 61.72
21 0.032 0.311 0.436 0.561 0.686 0.811 0.936 1.061 1.186 1.311 1.436 1.561 1.686 1.936 2.436
0.810 7.90 11.07 14.25 17.42 20.60 23.77 26.95 30.12 33.30 36.47 39.65 42.82 49.17 61.87
22 0.028 0.319 0.444 0.569 0.694 0.819 0.944 1.069 1.194 1.319 1.444 1.569 1.694 1.944 2.444
0.710 8.10 11.28 14.45 17.63 20.80 23.98 27.15 30.33 33.50 36.68 39.85 43.03 49.38 62.08
23 0.025 0.325 0.450 0.575 0.700 0.825 0.950 1.075 1.200 1.325 1.450 1.575 1.700 1.950 2.450
0.640 8.26 11.43 14.61 17.78 20.96 24.13 27.31 30.48 33.66 36.83 40.01 43.18 49.53 62.23
24 0.022 0.331 0.456 0.581 0.706 0.831 0956 1.081 1.206 1.331 1.456 1.581 1.706 1.956 2.456
0.560 8.41 11.58 14.76 17.93 21.11 24.28 27.46 30.63 33.81 36.98 40.16 43.33 49.68 62.38

TABLE TO DETERMINE NOMINAL TUBE ID’S - STANDARD WIRE GAUGE (SWG)

TABLE TO DETERMINE NOMINAL TUBE ID’S - STANDARD WIRE GAUGE (SWG)
Wall thickness Tube OD (in/mm)
BWG Decimal in/mm 3/8 1/2 5/8 3/4 7/8 1 1 1/8 1 1/4 1 3/8 1 1/2 1 5/8 1 3/4 2 2 1/2
9.53 12.70 15.88 19.05 22.23 25.40 28.58 31.75 34.93 38.10 41.28 44.45 50.80 63.50
0 0.324
8.23
1 0.300
7.62
2 0.276
7.01
3 0.252
6.40
4 0.232
5.89
5 0.220
5.59
6 0.192
4.88
7 0.179
4.47
8 0.160
4.06
9 0.144
3.66
10 0.128
3.25
11 0.116
2.95
12 0.104
2.64
13 0.092
2.34
14 0.080
2.03
15 0.072
1.83
16 0.064
1.63
17 0.056
1.42
18 0.048
1.22
19 0.040
1.02
20 0.036
0.91
21 0.032
0.81
22 0.028
0.71
23 0.024
0.61
24 0.022
0.56
25 0.020
0.51