Table 14.2c. Dimensions and Physical Characteristics of Copper Tube: Type M

Nominal or standard size, inchesNominal dimensions, inchesCalculated values (based on nominal dimensions)
Outside diameterInside diameterWall thicknessCross sectional area of bore, sq. inchesWeight of tube only, pounds per linear ft.Weight of tube & water, pounds per linear ft.Volume of tube, per linear ft.
Cu ft.Gal.
38 .500 .450 .025 .159 .145 .214 .00110 .00826
12 .625 .569 .028 .254 .204 .314 .00176 .0132
34 .875 .811 .032 .517 .328 .551 .00359 .0269
1 1.125 1.055 .035 .874 .465 .843 .00607 .0454
114 1.375 1.291 .042 1.31 .682 1.25 .00910 .0681
112 1.625 1.527 .049 1.83 .940 1.73 .0127 .0951
2 2.125 2.009 .058 3.17 1.46 2.83 .0220 .165
212 2.625 2.495 .065 4.89 2.03 4.14 .0340 .254
3 3.125 2.981 .072 6.98 2.68 5.70 .0485 .363
312 3.625 3.459 .083 9.40 3.58 7.64 .0653 .488
4 4.125 3.935 .095 12.2 4.66 9.83 .0847 .634
5 5.125 4.907 .109 18.9 6.66 14.8 .131 .982
6 6.125 5.881 .122 27.2 8.92 20.7 .189 1.41
8 8.125 7.785 .170 47.6 16.5 37.1 .331 2.47
10 10.125 9.701 .212 73.9 25.6 57.5 .513 3.84
12 12.125 11.617 .254 106 36.7 82.5 .736 5.51