The following table specifies dimensions and weights of tubes in metric and imperial units. 

The tube wall thicknesses are specified in SWG (Standard Wire Gauge). 

Wall thickness Outside diameter
mm 31.75 38.10 44.45 50.80 54.00 57.00 63.50 76.20 82.50 88.90 101.60 107.95 114.30 127.00 139.70
SWG inch mm inch 1 1/4 1 1/2 1 3/4 2 2 1/8 2 1/4 2 1/2 3 3 1/4 3 1/2 4 4 1/4 4 1/2 5 5 1/2
13 2.34 kg/m 2.00 2.44 2.88 3.32 3.54
0.088 lbs/ft 1.29 1.57 1.85 2.14 2.28
12 2.64 kg/m 2.19 2.68 3.16 3.65 3.89 4.12 4.62 5.59 6.07
0.104 lbs/ft 1.47 1.80 2.12 2.45 2.61 2.78 3.10 3.76 4.08
11 2.95 kg/m 2.42 2.96 3.50 4.05 4.32 4.58 5.13 6.22 6.76 7.30
0.116 lbs/ft 1.62 1.99 2.35 2.71 2.90 3.08 3.44 4.17 4.53 4.90
10 3.25 kg/m 2.63 3.23 3.83 4.42 4.73 5.01 5.62 6.82 7.41 8.01 9.21 9.81 10.40
0.128 lbs/ft 1.77 2.17 2.57 2.97 3.17 3.37 3.77 4.58 4.98 5.38 6.18 6.59 6.99
9 3.66 kg/m 2.91 3.58 4.26 4.93 5.27 5.59 6.28 7.63 8.29 8.97 10.32 10.99 11.67 13.01
0.144 lbs/ft 1.95 2.41 2.86 3.31 3.53 3.76 4.21 5.12 5.57 6.02 6.92 7.38 7.83 8.73
8 4.06 kg/m 3.15 3.89 4.63 5.37 5.75 6.10 6.86 8.34 9.07 9.82 11.30 12.04 12.78 14.26
0.160 lbs/ft 2.12 2.62 3.11 3.61 3.86 4.11 4.61 5.60 6.10 6.60 7.59 8.09 8.59 9.58
7 4.47 kg/m 3.41 4.22 5.04 5.86 6.27 6.65 7.49 9.12 9.93 10.75 12.38 13.19 14.01 15.64
0.176 lbs/ft 2.29 2.84 3.38 3.93 4.20 4.48 5.03 6.12 6.67 7.22 8.31 8.86 9.41 10.50
6 4.88 kg/m 3.59 4.46 5.34 6.21 6.65 7.06 7.95 9.69 10.56 11.43 13.18 14.05 14.92 16.66
0.192 lbs/ft 2.41 3.00 3.58 4.16 4.46 4.75 5.33 6.50 7.09 7.67 8.84 9.42 10.01 11.18
5 5.39 kg/m 3.88 4.84 5.80 6.77 7.25 7.71 8.69 10.62 11.57 12.54 14.46 15.43 16.39 18.31
0.212 lbs/ft 2.60 3.25 3.89 4.54 4.86 5.18 5.83 7.12 7.77 8.41 9.70 10.35 10.99 12.28
4 5.89 kg/m 4.15 5.20 6.25 7.30 7.83 8.33 9.40 11.51 12.55 13.61 15.71 16.76 17.82 19.92 22.02
0.232 lbs/ft 2.78 3.49 4.20 4.90 5.26 5.61 6.32 7.73 8.43 9.14 10.55 11.26 11.97 13.38 14.79
3 6.40 kg/m 5.54 6.69 7.83 8.40 8.94 10.11 12.40 13.53 14.68 16.97 18.11 19.25 21.54 23.82
0.252 lbs/ft 3.72 4.49 5.26 5.64 6.02 6.79 8.32 9.09 9.86 11.39 12.16 12.93 14.46 16.00
2 7.01 kg/m 5.93 7.19 8.44 9.07 9.66 10.94 13.44 14.68 15.95 18.45 19.70 20.95 23.45 25.96
0.276 lbs/ft 3.98 4.82 5.66 6.08 6.50 7.34 9.02 9.87 10.71 12.39 13.23 14.07 15.75 17.43
1 7.62 kg/m 7.66 9.02 9.71 10.35 11.74 14.46 15.81 17.18 19.90 21.27 22.63 25.35 28.07
0.300 lbs/ft 5.14 6.06 6.51 6.97 7.88 9.71 10.62 11.54 13.36 14.28 15.19 17.02 18.84
0 8.24 kg/m 8.12 9.59 10.33 11.02 12.53 15.47 16.93 18.41 21.35 22.82 24.29 27.23 30.17
0.324 lbs/ft 5.45 6.43 6.93 7.42 8.41 10.38 11.36 12.35 14.32 15.31 16.30 18.27 20.24
2/0 8.84 kg/m 8.54 10.12 10.92 11.66 13.28 16.43 18.00 19.59 22.74 24.32 25.90 29.06 32.21
0.348 lbs/ft 5.73 6.79 7.32 7.85 8.91 11.03 12.09 13.15 15.27 16.33 17.39 19.51 21.63
3/0 9.45 kg/m 12.28 14.00 17.37 19.05 20.75 24.12 25.81 27.49 30.86 34.24
0.372 lbs/ft 8.27 9.40 11.67 12.80 13.93 16.20 17.33 18.46 20.73 22.99
4/0 10.16 kg/m 12.97 14.83 18.46 20.26 22.08 25.71 27.53 29.34 32.97 36.60
0.400 lbs/ft 8.74 9.96 12.39 13.61 14.51 17.26 18.48 19.77 22.13 24.57
5/0 10.97 kg/m 13.73 15.73 19.65 21.59 23.57 27.48 29.44 31.40 35.32 39.24
0.432 lbs/ft 9.25 10.56 13.19 14.51 15.82 18.45 19.77 21.08 23.71 26.34
6/0 11.78 kg/m 20.79 22.88 24.99 29.20 31.30 33.41 37.61 41.82
0.464 lbs/ft 13.96 15.37 16.79 19.61 21.02 22.44 25.26 28.09
7/0 12.70 kg/m 22.04 24.29 26.57 31.11 33.37 35.64 40.18 44.71
0.500 lbs/ft 14.79 16.32 17.84 20.88 22.41 23.93 26.97 30.02