ISO 4427 - PE Pipes for Water Supply - Dimensions
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:
| Nominal Size DN Nominal Outside Diameter (mm) | Pressure Rating | ||||
|---|---|---|---|---|---|
| PN 2.5 | PN 4 | PN 6 | PN 10 | PN 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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