Engineering Fundamentals: An Introduction to Engineering, 4th ed.c

TABLE 7.2 Examples of Nominal Size versus Actual Size of Some Engineering Products

Dimension of Copper Tubing (Type K— for high pressure – temperature use)

Nominal Outside Inside Wall Flow Cross

Size (in.) Diameter (in.) Diameter (in.) Thickness (in.) Section (in

2

)

1/4 0.375 0.305 0.035 0.073

3/8 0.5 0.402 0.049 0.127

1/2 0.625 0.527 0.049 0.218

5/8 0.75 0.652 0.049 0.334

3/4 0.875 0.745 0.065 0.436

1 1.125 0.995 0.065 0.778

1 1.375 1.245 0.065 1.22

1 1.625 1.481 0.072 1.72

2 2.125 1.959 0.083 3.01

2 2.625 2.435 0.095 4.66

3 3.125 2.907 0.109 6.64

3 3.625 3.385 0.120 9.00

4 4.125 3.857 0.134 11.7

5 5.125 4.805 0.160 18.1

1

2

1

2

1

2

1

4

Dimension of Copper Tubing (Type L — for HVAC applications)

Nominal Outside Inside Wall Flow Cross

Size (in.) Diameter (in.) Diameter (in.) Thickness (in.) Section (in^2 )

1/4 0.375 0.315 0.030 0.078

3/8 0.5 0.44 0.035 0.145

1/2 0.625 0.545 0.040 0.233

5/8 0.75 0.666 0.042 0.334

3/4 0.875 0.785 0.045 0.484

1 1.125 1.025 0.065 0.825

1 1.375 1.265 0.050 1.26

1 1.625 1.505 0.055 1.78

2 2.125 1.985 0.060 3.09

2 2.625 2.465 0.070 4.77

3 3.125 2.945 0.080 6.81

3 3.625 3.425 0.090 9.21

4 4.125 3.905 0.100 11.0

5 5.125 4.875 0.110 18.1

1

2

1

2

1

2

1

4

Continued

7.3 Nominal Sizes versus Actual Sizes 169

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