Physical and chemical characteristics of HDPE pipes
|
CHARACTERISTIC |
REQUIREMENT |
TEST PARAMETERS |
TEST METHOD |
|
|
Parameter |
Value |
|||
|
Elongation at break |
≥350% |
TEST SPEED |
100/50/25mm/min |
ISO6259 |
|
Melt flow rate |
Change of MFR by processing ±20% |
Load Test temp. Time |
5.0kg 190℃ 10min |
ISO1133:2005 |
|
Longitudinal reversion |
≤3% |
Test temp. Time |
100±2℃ See ISO2505 |
ISO2505 |
|
Oxidation induction time |
≥20min |
Test temp. |
200℃ |
ISO11357 |
Mechanical characteristics of HDPE pipes
|
CHARACTERISTIC |
REQUIREMENT |
Material |
TEST PARAMETERS FOR INDIVIDUAL TESTS |
TEST METHOD |
|||
|
Hydrostatic stress (Mpa) |
Test temp. (℃) |
Test period (h) |
No.of test pieces |
||||
|
Hydrostatic strength at 20℃ |
No failure during the test period |
PE100 PE80 |
12.4 Mpa 10.0 Mpa |
20 |
100 |
3 |
ISO1167-1 ISO1167-2
|
|
Hydrostatic strength at 80℃ |
PE100 PE80 |
5.4 Mpa 4.5 Mpa |
80 |
165 |
3 |
ISO1167-1 ISO1167-2
|
|
|
Hydrostatic strength at 80℃ |
PE100 PE80 |
5.0 Mpa 4.0 Mpa |
80 |
1000 |
3 |
ISO1167-1 ISO1167-2 |
|
Specification of HDPE pipes
|
NORMAL SIZE (DN/OD) |
STANDARD DIAMETER RATE, SDR |
||||
|
SDR26 |
SDR21 |
SDR17 |
SDR13.6 |
SDR11 |
|
|
NORMAL WORKING PRESSURE, PN (Bar) |
|||||
|
PE100 |
PN6 |
PN8 |
PN10 |
PN12.5 |
PN16 |
|
PE80 |
PN5 |
PN6 |
PN8 |
PN10 |
PN12.5 |
|
20 |
|
|
|
|
2.3 |
|
25 |
|
|
|
|
2.3 |
|
32 |
|
|
|
|
3.0 |
|
40 |
|
|
|
|
3.7 |
|
50 |
|
|
|
|
4.6 |
|
63 |
|
|
|
4.7 |
5.8 |
|
75 |
|
|
4.5 |
5.6 |
6.8 |
|
90 |
|
4.3 |
5.4 |
6.7 |
8.2 |
|
110 |
4.2 |
5.3 |
6.6 |
8.1 |
10.0 |
|
125 |
4.8 |
6.0 |
7.4 |
9.2 |
11.4 |
|
140 |
5.4 |
6.7 |
8.3 |
10.3 |
12.4 |
|
160 |
6.2 |
7.7 |
9.5 |
11.8 |
14.6 |
|
180 |
6.9 |
8.6 |
10.7 |
13.3 |
16.4 |
|
200 |
7.7 |
9.6 |
11.9 |
14.7 |
18.2 |
|
225 |
8.6 |
10.8 |
13.4 |
16.6 |
20.5 |
|
250 |
9.6 |
11.9 |
14.8 |
18.4 |
22.7 |
|
280 |
10.7 |
13.4 |
16.6 |
20.6 |
25.4 |
|
315 |
12.1 |
15.0 |
18.7 |
23.2 |
28.6 |
|
355 |
13.6 |
16.9 |
21.1 |
26.1 |
32.2 |
|
400 |
15.3 |
19.1 |
23.7 |
29.4 |
36.3 |
|
450 |
17.2 |
21.5 |
26.7 |
33.1 |
40.9 |
|
500 |
19.1 |
23.9 |
29.7 |
36.8 |
45.4 |
|
560 |
21.4 |
26.7 |
33.2 |
41.2 |
50.8 |
|
630 |
24.1 |
30.0 |
37.4 |
46.3 |
57.2 |
|
710 |
27.2 |
33.9 |
42.1 |
52.2 |
|
|
800 |
30.6 |
38.1 |
47.4 |
58.8 |
|
|
900 |
34.4 |
42.9 |
53.3 |
|
|
|
1000 |
38.2 |
47.7 |
59.3 |
|
|
|
1200 |
45.9 |
57.2 |
67.9 |
|
|
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