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Copper tube size for HVAC system

What is HVAC?

Basically, Heating, ventilation and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality

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HVAC

Belowing is a chart of copper pipe sizes, A presents annealed copper pipe, D presents the drawn copper pipe

Nominal or Standard
Size, inches
Nominal Dimensions, inches
Calculated Values (based on nominal dimensions)
Outside Diameter
Inside Diameter
Wall Thickness
Cross Sectional Area of Bore,
sq inches
External Surface,
sq ft per linear ft
Internal Surface,
sq ft/linear ft
Weight of Tube Only,
pounds/linear ft
Contents of Tube,
cu ft /linear ft
1/8
A
.125
.065
.030
.00332
.0327
.0170
.0347
.00002
3/16
A
.187
.128
.030
.0129
.0492
.0335
.0575
.00009
1/4
A
.250
.190
.030
.0284
.0655
.0497
.0804
.00020
5/16
A
.312
.248
.032
.0483
.0817
.0649
.109
.00034
3/8
A
.375
.311
.032
.076
.0982
.0814
.134
.00053
D
.375
.315
.030
.078
.0982
.0821
.126
.00054
1/2
A
.500
.436
.032
.149
.131
.114
.182
.00103
D
.500
.430
.035
.145
.131
.113
.198
.00101
5/8
A
.625
.555
.035
.242
.164
.145
.251
.00168
D
.625
.545
.040
.233
.164
.143
.285
.00162
3/4
A
.750
.680
.035
.363
.196
.178
.305
.00252
A
.750
.666
.042
.348
.196
.174
.362
.00242
D
.750
.666
.042
.348
.196
.174
.362
.00242
7/8
A
.875
.785
.045
.484
.229
.206
.455
.00336
D
.875
.785
.045
.484
.229
.206
.455
.00336
1 1/8
A
1.125
1.025
.050
.825
.294
.268
.655
.00573
D
1.125
1.025
.050
.825
.294
.268
.655
.00573
1 3/8
A
1.375
1.265
.055
1.26
.360
.331
.884
.00875
D
1.375
1.265
.055
1.26
.360
.331
.884
.00875
1 5/8
A
1.625
1.505
.060
1.78
.425
.394
1.14
.0124
D
1.625
1.505
.060
1.78
.425
.394
1.14
.0124
2 1/8
D
2.125
1.985
.070
3.09
.556
.520
1.75
.0215
2 5/8
D
2.625
2.465
.080
4.77
.687
.645
2.48
.0331
3 1/8
D
3.125
2.945
.090
6.81
.818
.771
3.33
.0473
3 5/8
D
3.625
3.425
.100
9.21
.949
.897
4.29
.0640
4 1/8
D
4.125
3.905
.110
12.0
1.08
1.02
5.38
.0833