Pipe Roughness: Concrete pipe (smooth) to Ductile iron pipe
Pipe surface roughness values — absolute roughness for various pipe materials used in Moody diagram / friction factor calculations
| material | roughness ft (ft) | roughness in (in) | roughness mm (mm) |
|---|---|---|---|
| Concrete pipe (smooth) | 0.000984 | 0.011811 | 0.3 |
| Copper tubing | 0.000005 | 0.000059 | 0.0015 |
| Corrugated metal pipe | 0.147638 | 1.771654 | 45 |
| Drawn tubing | 0.000005 | 0.000059 | 0.0015 |
| Ductile iron pipe | 0.000394 | 0.004724 | 0.12 |
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