Medical Gases - Piping Dimensions

Copper tube dimensions used for medical gases

Nominal dimensions and physical characteristics for copper tubes type K and L used for medical applications:

Copper Tube - Type K

Nominal SizeOutside Diameter
(in)
Inside Diameter
(in)
Wall Thickness
(in)
Internal Volume of Tube
(cu.ft per ft)
1/4 0.375 0.305 0.035 0.00051
3/8 0.500 0.402 0.049 0.00088
1/2 0.625 0.527 0.049 0.00151
5/8 0.750 0.652 0.049 0.00232
3/4 0.875 0.745 0.065 0.00303
1 1.125 0.995 0.065 0.00540
1 1/4 1.375 1.245 0.065 0.00845
1 1/2 1.625 1.481 0.072 0.0120
2 2.125 1.959 0.083 0.0209
2 1/2 2.625 2.435 0.095 0.0323
3 3.125 2.907 0.109 0.0461
4 4.125 3.857 0.134 0.0811

Copper Tube - Type L

Nominal SizeOutside Diameter
(in)
Inside Diameter
(in)
Wall Thickness
(in)
Internal Volume of Tube
(cu.ft per ft)
1/4 0.375 0.315 0.030 0.00054
3/8 0.500 0.430 0.035 0.00101
1/2 0.625 0.545 0.040 0.00162
5/8 0.750 0.666 0.042 0.00242
3/4 0.875 0.785 0.045 0.00336
1 1.125 1.025 0.050 0.00573
1 1/4 1.375 1.265 0.055 0.00873
1 1/2 1.625 1.505 0.060 0.0124
2 2.125 1.985 0.070 0.0215
2 1/2 2.625 2.465 0.080 0.0331
3 3.125 2.945 0.090 0.0473
4 4.125 3.905 0.110 0.0832

 

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