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Obnovit |
RAWE-Tables
Absolute pipe roughness for various materials
| Material |
ε [mm] |
| asbestocement |
0.15 |
| cast iron asphalted |
0.2 |
| cast iron corroded |
3 |
| cast iron slightly corroded |
1.5 |
| cast iron new |
1 |
| concrete rough |
3 |
| concrete smooth |
0.6 |
| copper |
0.05 |
| galvanized steel |
0.2 |
| glass, plastics (PE, PP, PVC) |
0.01 |
| glazed stoneware |
0.6 |
| non-ferrous metals (drawn pipes) |
0.05 |
| precast concrete, joints sealed with mortar |
0.6 |
| rubber |
0.03 |
| seamless steel, new |
0.2 |
| steel heavily corroded |
1 |
| steel slightly corroded |
0.3 |
| steel zinced |
0.2 |
