HDPE&MPP Power Pipes
ApplicationApplication
PROPERTIESPROPERTIES
|
Characteristics |
Requirements |
|
density g/cm³ |
0.90～0.94 |
|
Ring stiffness (3%, kPa) (room temperature) |
SN24 Lv.≥24 SN32 Lv.≥32 SN40 Lv.≥40 |
|
Flattening test |
When the vertical deformation of the specimen is 50% of the original inner diameter, there should be no cracks or cracks in the specimen |
|
Vicat softening temperature (using the Aso method) |
≥150℃ |
|
Tensile strength |
pipeline：≥25MPa Fusion splices：≥22.5MPa |
|
Elongation at break |
≥400% |
|
Flexural strength |
≥36MPa |
|
Thermal stability (oxidation induction phase) 200°C |
≥50min |
|
Drop weight impact test |
||
|
Nominal inner diameter mm |
Falling gas weight (deviation±1.0%) kg |
Impact height (deviation±20) mm |
|
100 |
6.0 |
1200 |
|
125 |
7.5 |
|
|
150 |
10.0 |
|
|
175 |
10.0 |
|
|
200 |
12.5 |
|
|
225 |
12.5 |
|
|
250 |
15.0 |
|
| Note 1: Before the test, the specimen was kept warm at a temperature of (-5±1)°C for at least 8h. Note 2: The radius of spherical curvature of the drop weight hammer is 50mm, and the diameter of the punch column is 90mm. | ||
Product performanceperformance
|
Nominal inner diameter mm |
Nominal wall thickness mm |
Nominal length mm |
||
|
Ring stiffness (3%) grade (room temperature) |
||||
|
SN24 |
SN32 |
SN40 |
||
|
100 |
6 |
8 |
10 |
6000、9000 |
|
125 |
8 |
10 |
12 |
|
|
150 |
10 |
12 |
14 |
|
|
175 |
12 |
14 |
16 |
|
|
200 |
14 |
16 |
18 |
|
|
225 |
16 |
18 |
20 |
|
|
250 |
18 |
20 |
22 |
|