Detection voltage schedule
| Anticorrosive materials | Thickness of the anti-corrosion layer (mm) | Detect voltage (KV) | remark |
| Epoxy Coal Leaching Book | 0.2 | 4~5KV or customized | If there is a standard, it should be implemented according to the standard |
| 0.4 | |||
| 0.6 | |||
| 0.8 | |||
| Petroleum asphalt | 2 | 11 | |
| 3 | 15 | ||
| 5.5 | 18 | ||
| 7 | 20 | ||
| 9 | 24 | ||
| Polyethylene tape | Converted according to: 3249TC-V formula V: Voltage TC: Thickness of anti-corrosion layer According to SY4014-92 acceptance specification standard | ||
| Glass-lined | According to experience, the detection voltage is generally 8KV~20KV | ||
| Other anticorrosive materials | Depending on the design of the design department, the voltage or the insulation properties of the material itself are tested. | ||
Coating thickness vs. reference voltage comparison table
| Coating thickness （μm） | Reference voltage （KV） | Coating thickness （μm） | Reference voltage （KV） |
| 50 | 0.7 | 1250 | 5.5 |
| 100 | 1 | 1500 | 6.3 |
| 150 | 1.2 | 2000 | 8 |
| 200 | 1.5 | 2500 | 9.6 |
| 250 | 1.7 | 3000 | 11.1 |
| 300 | 20 | 3500 | 12.6 |
| 350 | 2.2 | 4000 | 14.1 |
| 400 | 2.4 | 5000 | 17.1 |
| 500 | 2.9 | 6000 | 20.1 |
| 600 | 3.3 | 8000 | 25.7 |
| 800 | 4 | 10000 | 30.1 |
| 1000 | 4.7 | * The above is for reference only | |
