PE pipe buried for gas

2018/07/20


Buried polyethylene (PE) pipes for the supply of gaseous fuels



Pressure grade: the working pressure of buried polyethylene (PE) pipes for the supply of gaseous fuels is shown in the table below.

Specification and model: dn20mm~dn630mm

Executive standard: GB/T 15558.1-2015 Buried Polyethylene (PE) Piping Systems for the Supply of Gaseous Fuels — Part 1: Pipes


Performance features:

1. Low density, light weight, easy to handle and install;

2. Be able to resist corrosion by a variety of chemical media;

3. Excellent hydraulic performance: the wear resistance coefficient is only 0.009;

4. Long service lifetime: up to 50 years;

5. Reliable connection;

6. High toughness and good seismic performance;

7. Better resistance to slow crack growth (SCG) and rapid crack propagation (RCP).




The maximum allowable working pressure (MPa) of buried polyethylene (PE) pipes for the supply of gaseous fuels



Type of town gases

PE80级管材

PE100级管材

SDR11

SDR17.6

SDR11

SDR17.6


Natural gas

0.50

0.30

0.70

0.40


Liquefied petroleum gas


Mixed with air

0.40

0.20

0.50

0.30


Gaseous state

0.20

0.10

0.30

0.20


Manufactured gas


Dry gas

0.40

0.20

0.50

0.30


Others

0.20

0.10

0.30

0.20

 



Specification and dimension: the specification and dimension of buried polyethylene (PE) pipes for the supply of gaseous fuels meet the requirements in the following table.



Minimum wall thickness of frequently-used SDR17.6 and SDR11 pipes


dn/mm

 Minimum wall thickness /mm

SDR17.6

SDR11

20

2.3

3.0

25

2.3

3.0

32

2.3

3.0

40

2.3

3.7

50

2.9

4.6

63

3.6

5.8

75

4.3

6.8

90

5.2

8.2

110

6.3

10.0

125

7.1

11.4

140

8.0

12.7

160

9.1

14.6

180

10.3

16.4

200

11.4

18.2

225

12.8

20.5

250

14.2

22.7

280

15.9

25.4

315

17.9

28.6

355

20.2

32.3

400

22.8

36.4

450

25.6

40.9

500

28.4

45.5

560

31.9

50.9

630

35.8

57.3




Note: the yellow and orange pipes can be customized according to customer requirements.


 

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