Table 14.5. Actual Burst Pressures,1 Types K, L and M Copper Water Tube, psi at Room Temperature

Nominal or standard size, inchesActual outside diameter, in.KL 2M
DrawnAnnealedDrawnAnnealedDrawnAnnealed
12 58 9840 4535 7765 3885 6135 -
34 78 9300 4200 5900 2935 4715 -
1 118 7200 3415 5115 2650 3865 -
114 138 5525 2800 4550 2400 3875 -
112 158 5000 2600 4100 2200 3550 -
2 218 3915 2235 3365 1910 2935 -
212 258 3575 - 3215 - 2800 -
3 318 3450 - 2865 - 2665 -
4 418 3415 - 2865 - 2215 -
5 518 3585 - 2985 - 2490 -
6 618 3425 - 2690 - 2000 -
8 818 3635 - 2650 - 2285 -

1 The figures shown are averages of three certified tests performed on each type and size of water tube. In each case wall thickness was at or near the minimum prescribed for each tube type. No burst pressure in any test deviated from the average by more than 5 percent.

2 These burst pressures can be used for ACR tube of equivalent actual O.D. and wall thickness.