This calculator estimates the flow rate through a pipe based on the Darcy-Weisbach equation.
| Pipe Material | Diameter (mm) | Roughness (mm) |
|---|---|---|
| Galvanized iron | 15-100 | 0.15-0.25 |
| PVC | 15-200 | 0.0015-0.007 |
| Copper | 15-100 | 0.0015-0.005 |
| Stainless steel | 15-100 | 0.015-0.030 |
| Concrete | 150-3000 | 0.3-3.0 |
| Asbestos cement | 150-3000 | 0.1-1.0 |
| Cast iron | 15-100 | 0.26-0.61 |
| Brass | 15-100 | 0.0015-0.003 |