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ISO 4427 - PE Pipes for Water Supply - Dimensions

Polyethylene pipe dimensions according European Standards.

Polyethylene - PE - is popular material and and commonly used as water pipes in the PE 50, PEH or PE-HD (PolyEthylene High Density) qualities.

PE pipes are produced in different pressure grades - PN grades - indicating the pressure in bars the pipe supports with water at 20 oC.

Pressure grades according to European standards:

  • PN 2.5 - max pressure 2.5 bar
  • PN 4 - max pressure 4 bar
  • PN 6  - max pressure 6 bar
  • PN 10  - max pressure 10 bar
  • PN 16  - max pressure 16 bar
  • 1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10.197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg

European PEH pipes - pressure ratings and dimensions:

ISO 4427 - PE Pipes for Water Supply - Dimensions
Nominal Size
DN
Nominal Outside Diameter
(mm)
Pressure Rating
PN 2.5PN 4PN 6PN 10PN 16
Inside Diameter (mm)
20       16 14.4
25     21 20.4 18
32     28 26.2 23.2
40   36 35.4 32.6 29
50   46 44.2 40.8 36.2
63 59.8 58.2 55.8 51.4 45.8
75 71.2 69.2 66.4 61.4 54.4
90 85.6 83 79.8 73.6 65.4
110 104.6 101.6 97.4 90 79.8
125 118.8 115.4 110.8 102.2 90.8
140 133 129.2 124 114.6 101.6
160 152 147.6 141.8 130.8 116.2
180 171.2 166.2 159.6 147.2 130.8
200 190.2 184.6 177.2 163.6 145.4
225 214 207.8 199.2 184 163.4
250 237.6 230.7 221.6 204.6 181.6
280 266.2 258.6 248.2 229.2 203.4
315 299.6 290.8 279.2 257.8 229
355 337.6 327.8 314.8 290.6 258
400 380.4 369.4 354.6 327.4 290.6
450 428 415.6 399 368.2 327
500 475.4 461.8 443.4 409.2  
560 532.6 517.2 496.6 458.4  
630 599.2 581.8 558.6 515.6  
710 675.2 655.6 629.6    
800 760.8 738.8 709.4    
900 856 831.2 798    
1000 951 923.6 887    
1200 1141.2 1108.2      
1400 1331.4 1293      
1600 1521.6 1477.6      

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