High Density Polyethylene Pipes (HDPE Pipes)

High Density Polyethylene Pipes (HDPE Pipes) is use for buried water mains and services and for water supply above ground, both inside and outside buildings. High-density polyethylene pipe (HDPE) can carry potable water, wastewater, slurries, chemicals, hazardeous wastes, and compressed gases. In fact, polyethylene pipe has a long and distinguished history of service to the gas, oil, mining and other industries.

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Detailed Description for High Density Polyethylene Pipes (HDPE Pipes)

 

 

Pipes shall be classified by pressure rating ( PN ) corresponding to the maximum permissible working pressure at 3WC, as follows:

 

Pressure Rating of Pipe

Maximum Permissible working Pressure

PN 2.5

0.25 MPa

PN 4

0.40 MPa

PN 6

0.60 MPa

PN 10

1.00 MPa

PN 12.5

1.25 MPa

PN 16

1.60 MPa

 

Classification of Pipe Material

 

S No

Material Classification ( Grade)

 MRS (Minimum Required Strength) of PE Resin in MPa at 200 c for 50 year life

Maximum Allowable Design Stress MPa at 20°C

Maximum Allowable hydrostatic Design Stress MPa  At 300C

1

PE 63

6.3

5

4.0

2

PE 80

8.0

6.3

5.0

3

PE 100

10.0

8.0

6.3

 

 

 

As per IS 4984: 1995: Outside Diameter, Tolerance and Ovality of Pipes

 

Nominal Diameter (DN)

Outside Diameter

mm

Tolerance

mm

Ovality

mm

16

16.0

0.3

1.2

20

20.0

0.3

1.2

25

25.0

0.3

1.2

32

32.0

0.3

1.3

40

40.0

0.4

1.4

50

50.0

0.5

1.4

63

63.0

0.6

1.5

75

75.0

0.7

1.6

90

90.0

0.9

1.8

110

110.0

1.0

2.2

125

125.0

1.2

2.5

140

140.0

1.3

2.8

160

160.0

1.5

3.2

180

180.0

1.7

3.6

200

200.0

1.8

4.0

225

225.0

2.1

4.5

250

250.0

2.3

5.0

280

280.0

2.6

9.8

315

315.0

2.9

11.1

355

355.0

3.2

12.5

400

400.0

3.6

14.0

450

450.0

4.1

15.6

500

500.0

4.5

17.5

560

560.0

5.0

19.6

630

630.0

5.7

22.1

710

710.0

6.4

24.9

800

800.0

7.2

28.0

900

900.0

8.1

31.5

1000

1000

9.0

35.0


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