hdpe pipe 40/33 silicon core pe pipe with various lengths

No.

Item

Performance

1

Appearance

Appearance color uniform;
Smooth inner & outer wall with uniform, no collapse, no holes, no tear tracks, no bubble or crack;
Inside layer with closely sinter, no excuse; Outside layer with complete and clear product identification

2

Thickness
of wall

2mm to 6mm or as customers' need

3

Stiffness of outer Wall

≥ 59 (Shore-D)

4

Tensile Strength

≥ 2.0 MPa

5

Elongation at break

≥ 380 %

6

Maximal Pulling Load

≥ 8000 N

7

Friction Coefficient of Inner Wall

static state ≤  0.25
dynamic state≤  0.15

8

Cold bending radius

400mm

9

 ring stiffness

 ≥50(KN/m2)

10

Flatting test

Unload immediately after being vertically pressed till 50% distortion of original outer diameter, the sample is no  not broken, not hierarchica

11

Recovery rate

Unload immediately after being vertically pressed till 5% distortion of original outer diameter, the sample is no crack. The outer diameter can recovery 85% after 10 min

12

Drop hammer impact resistance

In the  temperature -20℃, the height is 2m, using 15.3kgs hammer to impact 10 samples, more than 9 samples are no crack.

13

Resistance to water pressure sealing performance

Under temperature 20℃and pressure 50Kpa, can keep 24 hours without leakge

14

Heat reversion

≤ 3%

15

longitudinal shrinkage ratio

≤ 3.0%

Specification
(OD/ID)

OD
(mm)

OD  allowable deviation
(mm)

ID min  
(mm)

Thickness of
inner layer

Elasticity

before coiling

after coiling

25/20

25

0.3

20

2.5

≤1.5

≤2

32/28

32

0.3

26

3

≤2

≤3

40/33

40

0.3

33

3.5

≤2.5

≤3.5

46/38

46

0.4

38

4

≤3

≤5

50/41

50

0.4

41

4.5

≤3

≤5

63/54

63

0.4

54

5

≤3

≤5

Storage temperature:

-40°C~ +70°C

Installation temperature:

-20°C~ +50°C

Operating temperature:

   -40°C~ +70°C