Table 3.
The discretization table of soil corrosion factors in the pipe section of loam area.
| Serial number | Soil resistivity (Ω · m) | Reddox potential (mV) | Chloride ion content (%) | Sulfuric acid root ion content (%) | Water content (%) | pH value | Soil corrosion grade |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
| 2 | 2 | 2 | 2 | 2 | 4 | 2 | 2 |
| 3 | 2 | 2 | 2 | 2 | 3 | 2 | 2 |
| 4 | 3 | 2 | 2 | 2 | 3 | 2 | 3 |
| 5 | 3 | 2 | 2 | 2 | 4 | 2 | 3 |
| 6 | 2 | 2 | 2 | 2 | 3 | 2 | 3 |
| 7 | 3 | 2 | 2 | 2 | 3 | 2 | 3 |
| 8 | 2 | 1 | 2 | 2 | 4 | 2 | 2 |
| 9 | 2 | 3 | 2 | 2 | 4 | 2 | 3 |
| 10 | 2 | 2 | 2 | 2 | 4 | 2 | 2 |
| 11 | 3 | 1 | 2 | 2 | 3 | 2 | 3 |
| 12 | 3 | 2 | 2 | 2 | 3 | 2 | 3 |
| 13 | 3 | 3 | 2 | 2 | 4 | 2 | 3 |
| 14 | 3 | 2 | 1 | 2 | 3 | 2 | 3 |
| 15 | 2 | 3 | 2 | 2 | 4 | 2 | 3 |
| 16 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 17 | 2 | 2 | 2 | 2 | 4 | 2 | 2 |
| 18 | 3 | 1 | 2 | 2 | 3 | 2 | 3 |
| 19 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| 20 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |