3PE pipe
2PE3PE防腐层厚度要求
|
N.B (mm) |
Epoxy powder coating(um) |
Adhesive(um) |
Min wall thickness of anticorrosive coating(mm) |
||
|
two layer |
three layer |
usual grade |
strengthen grade |
||
| ≤100 | ≥80 | 200-400 | 170-250 | 1.8 | 2.5 |
| 250<DN≤250 | 2.0 | 2.7 | |||
| 250<DN≤500 | 2.2 | 2.9 | |||
| 500<DN≤800 | 2.5 | 3.2 | |||
| DN≥800 | 3.0 | 3.7 | |||
2PE3PE防腐层性能特点
| NO. |
Item |
Property data |
Test way |
||
|
two laye |
three layer |
||||
| 1 | Detach strength(N/cm) | 20℃±5℃ | ≥70 | ≥100 | SY/T0413-2002 |
| 50℃±5℃ | ≥35 | ≥70 | |||
| 2 | Cleaning of the cathode(65℃,48h)(mm) | ≤8 | SY/T0413-2002 | ||
| 3 | Impact test(J/mm) | ≥8 | SY/T0413-2002 | ||
| 4 | Bending strength(2.5°-30℃±5℃) | No crack of polythene | SY/T0413-2002 | ||
