Copper Pipe/Tube Type L
Standard Domestic water use
Nominal Size (in.) O.D. Avg.I.D. Wall Thickness
1/4" | .375 | .315 | .030 |
| 3/8" | .500 | .430 | .035 |
1/2” | .625 | .545 | .040 |
5/8” | .750 | .666 | .042 |
3/4” | .875 | .785 | .045 |
1” | 1.125 | 1.025 | .050 |
1-1/4” | 1.375 | 1.265 | .055 |
1-1/2” | 1.625 | 1.505 | .060 |
2” | 2.125 | 1.985 | .070 |
2-1/2" | 2.625 | 2.465 | .080 |
3" | 3.125 | 2.945 | .090 |
4" | 4.125 | 3.897 | .110 |
6" | 6.125 | 5.845 | .140 |
"Know your copper" the most common are:
DWV= Thin wall, drain, vent, waste (not for pressure)
Type M=Thin wall (residential)
Type L=medium wall (commercial/residential)
Type K=Heavy wall (underground)
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