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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 (lb_f/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 2.5	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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