Table 14.2e. Dimensions and Physical Characteristics of Copper Tube: ACR (Air-Conditioning and Refrigeration Field Service)

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. per linear ft.	Weight of tube only, pounds per linear ft.	Volume of tube, cu. ft. per 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
	D	.250	.200	.025	.0314	.0655	.0524	.0680	.00022
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
	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
11⁄8	A	1.125	1.025	.050	.825	.294	.268	.655	.00573
	D	1.125	1.025	.050	.825	.294	.268	.655	.00573
13⁄8	A	1.375	1.265	.055	1.26	.360	.331	.884	.00875
	D	1.375	1.265	.055	1.26	.360	.331	.884	.00875
15⁄8	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
21⁄8	D	2.125	1.985	.070	3.09	.556	.520	1.75	.0215
25⁄8	D	2.625	2.465	.080	4.77	.687	.645	2.48	.0331
31⁄8	D	3.125	2.945	.090	6.81	.818	.771	3.33	.0473
35⁄8	D	3.625	3.425	.100	9.21	.949	.897	4.29	.0640
41⁄8	D	4.125	3.905	.110	12.0	1.08	1.02	5.38	.0833
A = Annealed Temper, D = Drawn Temper