|
No.
|
Items of Performance |
Index Requirement |
Samples |
|
1 |
Tensile Strength ，MPa 不小于 |
7.0 |
7.0 |
Cutting sample from soft pipe |
|
2 |
Break Extensibility% 不小于 |
250 |
250 |
|
3 |
Hot Air Aging （100℃×72h） |
Changing Rate of Tensile Strength ，% ≥ |
20 |
20 |
|
Changing Rate of Break Extension，% ≥ |
50 |
50 |
|
4 |
Liquid Volume-Resistant Expansibility，% ≥
（Under Standard Roon Temperature，70.2h） |
C Liquid |
50 |
－ |
|
BLiquid |
－ |
100 |
|
5 |
Adhesive Strength,，KN/m ≥ |
Inner Rubber Layer and Reinforced Layer
Reiforced Layer and Reinforced layer
Reinforced Layer and Outer Rubber Layer |
1.5 |
Cutting a section of soft pipe from the soft pipe |
|
6 |
Outer Rubber's ozone-resistant performance |
No Craze Crack |
|
7 |
Hydrauli Test （Test Pressure 0.8MPa） |
No leakage or Other Defects |
Whole soft pipe or soft pipe combination part |
|
8 |
blasting Pressure Test,，MPa ≥ |
1.6 |
Cutting off a section of soft pipe from the soft pipe |
|
9 |
0.4MPa Volume Expansibility under，% ≥ |
2 |
|
10 |
Maximum Electric Resistance between Pipe joints, ，Ω.m ≥
（Stretch State,not Charging Liquid） |
2×106 |
Whole soft pipe or soft pipe combination part |
|
11 |
Low Temperature Yield Strength （－10±3℃） |
No Craze Crack |
Cutting off a section of soft pipe from the soft pipe |
