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Hollow wall spiral pipe
Executive standard: GB/T19472.2-2004 Polyethylene Structure-wall Piping System for Underground Usage--part 2: Polyethylene Spirally Enwound Structure-wall Tubular Products.
Executive Standard
GB/T19472.2-2004 Polyethylene Structure-wall Piping System for Underground Usage--part 2: Polyethylene Spirally Enwound Structure-wall Tubular Products.
Nominal Ring Rigidity
SN4, SN8
Nominal Inner Diameter
DN/IN150~1500
Characteristics
HDPE double-wall spiral pipes produced in our company, made of HDPE raw material without toxicity and side effect, are widely applied to drainage in city, sewage discharge in factory and water supply and drainage in farming and stockbreeding industries, which is a new type green environmental protection product without contamination and any side effect.
HDPE double-wall spiral pipes produced in our company have good properties such as chemical corrosion resistance, impact resistance, wear resistance and cold resistance.
Electro-thermal welding or thermal contract belt is used for installing and connecting HDPE double-wall spiral pipe. Connecting piece and pipe are welded into an organic whole with sealed connection, high connecting strength and non-leakage on pipe fitting as well as convenient construction and good connecting property.

Physical indices of characteristics:

No.

Item

Performance index

1

Density (g/cm3)

≥0.93

2

Thermal expansion factor (10/℃)

11~16

3

Tensile strength (23℃) Mpa

≥20.7

4

Modulus of elasticity

≥800

5

Soften temperature (℃)

126

6

Fragile temperature (℃)

-70

7

Water absorption percentage (%)

<0.01

8

Breaking elongation percentage (%)

>350

9

Thermal stability (200℃)

≥20

   size

Product specification table (High compression resistant double layer enwinded pipe)
Reference standard: GB/T 19472.2 / KPS M2009 / ASTM F894
  Specification 1 (SN 4.0 ) Specification  2 (SN 8.0)
Nominal size
Inside diameter
mm
Outside diameter
mm
Wall height
mm
Wall thickness
mm
Outside diameter
mm
Wall height
mm
Wall thickness
mm
150
150
 
 
 
174
12
1.4
200
200
224
12
1.4
230
15
1.8
250
250
278
14
1.6
280
15
2.0
300
300
328
14
1.8
340
20
2.5
350
350
380
15
2.0
394
22
2.8
400
400
438
19
2.5
450
25
3.4
450
450
494
22
2.8
508
29
3.8
500
500
550
25
3.4
562
31
4.0
600
600
662
31
3.8
678
39
5.0
700
700
762
31
4.0
788
44
5.5
800
800
878
39
4.0
900
50
6.5
900
900
988
44
4.0
1012
56
7.5
1000
1000
1100
50
4.0
1124
62
9.0
1200
1200
1324
62
4.5
1350
75
10.0
1500
1500
1650
75
6.0
1680
90
11.0
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