specification

OD

min ID

thickness

length

elasticity

before coiling

after coiling

32/26

32

26

2.5

1000
2000
3000

<=2

<=3

34/28

34

28

3.0

1000
2000
3000

<=2

<=3

40/33

40

33

3.5

1000
2000
3000

<=2.5

<=3.5

46/38

46

38

4.0

1000
1500

<=3

<=5

50/41

50

41

4.5

1000
1500

<=3

<=5

63/54

63

54

5.0

1000
1500

<=3

<=5

Test item

technical target

1. Appearance

inside and outside walls should be smooth, homogeneous, no potholes formed by defects and impurities; appearance of uniform color, no color lines and spots decomposition; section without air bubbles, cracks; closely fused silica core wall, no excuse phenomenon; external wall of products identify complete and clear.

2. ring-stiffness. KN/m2

≥40

3.flattening test

Vertical pressure distoration rate is 40% of original diameter, immediate unloading, the specimen is not broken, not hierarchical

4.restoration rate

Vertical pressure distoration rate is 30% of original diameter, immediate unloading, the specimen is not broken, not non-layered, outer diameter would naturally be restored to its original 90%.

5.tensile-strength, Mpa

≥21

6.elongation at break,%

≥350

7.max tractive load,N

≥8000

8.falling weight impact test

Temperature 0 , height 2m, with the impact of 2Kg heavy hammer 10 times, nine times or more shall be no cracking phenomenon

9.exine hardness,HD

≥59

10. hydraulic pressure leadagetest

Temperature 20 , the pressure 50Kpa, maintain 24-hour, the sample connector, pipe plugs no leakage.

11. portrait retraction rate,%

≤3

12.cold bend radius,mm

≤400

13. internal wall friction coefficient

Static (plate method)

≤0.25

Dynamic (Drum Method)

≤0.15

14. power frequency break down,KV/mm

≥15

15.chemical resistance

The sample were placed in 5% NaCL, 40% H2SO4, 40% NaOH solution soak for 24 hours was no obvious corrosion.

16.breaking resistance,MPa

≥2.0