EnviroPressure®

Enviropipes manufacture EnviroPressure® pressure pipes in Australia up to 1600mm in diameter. All EnviroPressure® pipes are WaterMark certified and WSAA appraised to AS/NZS 4130:2018.

Overview

All pressure pipes are manufactured from virgin PIPA-approved raw materials. The range includes black pipes, black pipes with internal or external coloured HDPE jackets, and striped pipes suitable for water or gas supply and distribution, with operating pressures up to 3000 kPa and a maximum service temperature of 80 °C.

Pipes can be supplied in straight lengths or in coils of up to 400 metres to assist with underground installation and to suit specific design or transport requirements.

Applications

Dimensions

Pipe pressure ratings are determined by the wall thickness. Wall thickness is described as a ratio of the outside diameter of the pipe, commonly known as the Standard Dimension Ratio (SDR). For PE100 EnviroPressure® pipes, SDR is related to Nominal Working Pressure in bar (PN), and is provided in the table headers below for reference.

SDR41 and SDR26 PE100 High Density Polyethylene Pressure Pipe to AS4130

OD
SDR41 PN4SDR26 PN6.3
SIDKg/mSIDKg/m
25
32
40
50
632.657.90.47
753.168.90.66
903.782.70.96
1102.8104.30.924.5101.01.43
1253.2118.51.195.1114.81.84
1403.6132.81.495.7128.62.31
1604.1151.71.946.5147.03.02
1804.7170.72.467.3165.33.82
2005.2189.73.048.2183.74.72
2255.8213.43.859.2206.75.97
2506.5237.14.7510.2229.67.37
2807.2265.55.9611.4257.29.25
3158.1298.77.5412.8289.311.70
3559.2336.69.5714.5326.114.86
40010.3379.312.1516.3367.418.87
45011.6426.715.3818.3413.323.88
50012.9474.118.9920.4459.229.49
56014.5531.023.8222.8514.336.99
63016.3597.430.1525.7578.646.81
71018.4673.338.2928.9652.159.46
80020.7758.648.6132.6734.875.48
90023.3853.561.5336.7826.695.54
100025.9948.375.9640.8918.5117.94
120031.01138.0109.3848.91102.2169.84
140036.21327.6148.8857.11285.8231.17
160041.41517.3194.4565.21469.5301.94
180046.51706.9246.1073.41653.238214
200051.71896.6303.8381.51836.9471.78

 SDR21 AND SDR17 PE100 High Density Polyethylene Pressure Pipe to AS4130

ODSDR21  PN8SDR17  PN10
SIDKg/mSIDKg/m
25
322.028.00.18
402.036.00.232.535.00.28
502.545.00.363.143.80.44
633.256.60.573.955.10.70
753.867.40.814.765.60.99
904.580.91.175.678.81.43
1105.698.91.756.996.32.13
1256.3112.42.267.8109.42.76
1407.1125.92.838.7122.53.46
1608.1143.83.7010.1140.04.51
1809.1161.84.6811.2157.65.71
20010.1179.85.7812.5175.17.05
22511.4202.37.3214.0196.98.93
25012.6224.89.0315.6218.811.02
28014.1251.711.3317.5245.113.82
31515.9283.214.3419.6275.717.50
35517.9319.218.2222.1310.722.22
40020.2359.623.1324.9350.128.21
45022.7404.629.2728.1393.935.71
50025.2449.536.1431.2437.644.08
56028.3503.545.3334.9490.255.30
63031.8566.457.3739.3551.469.98
71035.8638.372.8744.3621.588.89
80040.4719.292.5149.9700.2112.85
90045.4809.1117.0856.1787.8142.82
100050.5899.0144.5562.4875.3176.33
120060.61078.9208.1574.81050.4253.91
140070.71258.7283.3287.31225.4345.60
160080.81438.5370.0499.81400.5451.40
180090.91618.3468.34112.21575.5571.30
2000101.01798.1578.20124.71750.6705.31

SDR13.6 and SDR11 PE100 High Density Polyethylene Pressure Pipe to AS4130

OD
SDR13.6  PN12.5SDR11  PN16
SIDKg/mSIDKg/m
251.921.10.142.420.20.16
322.527.00.223.125.80.27
403.133.80.353.932.30.42
503.942.20.544.840.40.66
634.953.20.866.150.91.04
755.863.31.227.260.51.48
907.076.01.768.772.72.13
1108.692.92.6210.688.83.18
1259.7105.53.3912.0100.94.10
14010.9118.24.2513.5113.05.15
16012.5135.15.5515.4129.26.72
18014.0151.97.0217.3145.38.51
20015.6168.88.6719.3161.510.50
22517.5189.910.9721.7181.613.30
25019.5211.013.5524.1201.816.41
28021.8236.416.9927.0226.020.59
31524.6265.921.5130.4254.326.06
35527.7299.727.3234.2286.633.10
40031.2339.634.6838.5322.942.02
45035.1379.943.8943.4363.353.18
50039.0422.154.1948.2403.665.66
56043.6472.767.9754.0452.182.36
63049.1531.886.0360.7508.6104.23
71055.3599.3109.2668.4573.2132.39
80062.4675.3138.7277.1645.8168.08
90070.1759.7175.5686.7726.5212.72
100077.9844.1216.7496.4807.3262.62
120093.51012.9312.11115.6968.7378.17
1400109.11181.8424.82134.91130.2514.74
1600124.71350.6554.87
1800140.31519.4702.25
2000155.91688.2866.98

SDR9 and SDR7.4 PE100 High Density Polyethylene Pressure Pipe to AS4130

OD
SDR9  PN20SDR7.4  PN25
SIDKg/mSIDKg/m
252.919.10.203.617.80.23
323.824.50.324.622.80.38
404.730.60.505.728.50.59
505.938.20.787.235.70.93
637.448.21.249.045.01.47
758.857.31.7610.753.52.08
9010.668.82.5412.964.23.00
11013.084.13.7915.878.54.48
12514.795.64.9017.989.25.78
14016.5107.06.1420.199.97.25
16018.8122.38.0222.9114.29.48
18021.2137.610.1525.8128.411.99
20023.6152.912.5328.6142.714.81
22526.5172.015.8632.2160.518.74
25029.4191.119.5935.8178.423.13
28033.0214.024.5740.1199.829.02
31537.1240.831.0945.1224.836.73
35541.8271.439.4950.9253.346.65
40047.1305.850.1457.3285.459.22
45053.0344.063.4664.5321.174.95
50058.9382.278.3471.6356.892.53
56066.0428.198.2780.2399.6116.07
63074.2481.6124.3890.2449.5146.90
71083.6542.8157.97101.7506.5186.58
80094.2611.6200.56
900
1000
1200
1400
1600
1800
2000

NOMINAL DIAMETER (DN)COIL LENGTH1 (m)WEIGHT2 SDR11 (Kg)WEIGHT2 SDR17 (Kg)WIDTH (mm)INTERNAL DIAMETER (mm)OUTSIDE DIAMETER (mm)PACKAGING
202002214230750920Pallet/Skid
2520032222707701160Pallet/Skid
3220054363008401350Pallet/Skid
40150634232010001500Pallet/Skid
50150996635012001850Loose
631001047037015502100Loose
6320020814045019002300Loose
6330031221053019002600Loose
751001489940017502700Loose
7520029619840019002800Loose
7530044429748019002750Loose
7540059239677018502650Loose
9010021314340019502650Loose
9030063942976019002850Loose
11010031821347019502850Loose
12510041027655021003050Loose
14010051534656022003350Loose
16010067245158024003400Loose
18010085157175024003480Loose
1. Other lengths available upon request
2. Nominated weight is unpackaged weight

Technical

Effects of Temperature on Allowable Working Pressure

As the temperature of the wall of the Pressure pipe increases, the working pressure must be reduced in order to achieve a 50 year life (or as stated in parenthesis), as per the following table:

Pressure re-rating due to thermal effects maximum allowable operating pressure (MAOP), meters head – PE100.

Temp °CPN 4PN 6.3PN 8PN 10PN 12.5PN 16PN 20PN 25
20 40 6380100125160 200 250
25 40 63 80 100 125 160 200 250
30 38 59 75 94 118 150 188 235
35 36 56 71 89 116 143 179 224
40 34 53 68 84 106 135 169 221
45 32 50 64 80 100 127 159 199
50 (36y) 30 48 60 76 95 121 151 189
55 (24y) 29 45 57 72 89 115 143 179
60 (12y) 27 43 54 68 85 109 136 170
80 (1y) 21 34 43 53 67 86 107 134
Note:
  1. The values tabled are for pipe manufactured to AS/NZS 4130 and fittings manufactured to AS/NZS 4129 made from the PE100 compounds complying with AS/NZS 4131.
  2. The values tabled are only for pressurised water and wastewater supply pipe and fittings. For the transport of liquid chemicals please refer to the Chemical Resistance Charts in the Catalogue.
  3. The times given in years as (36y) are allowable extrapolation limits obtained by applying the factors in table 1 of ISO 9080 to two years of test data at 80°C.
  4. Where appropriate, advice should be obtained from Enviropipes. Enviropipes can supply white coextruded pipe, which has an external UV resistant HDPE layer, reducing the wall temperatures for above ground pipelines in hot climates due to solar radiation absorption.
Operating pipe wall temperature may be determined from either:
  1. an assumption of a constant pipe wall temperature typical for continuous service at a set temperature.
  2. the determination of an average service temperature where temperature variations are likely to occur in a predictable pattern.
  3. the maximum service temperature less 10°C for installations where large short term temperature variations occur up to a maximum of 80°C.
The table above applies to water or wastewater supply only.

For the transport of liquid chemicals please refer to the Chemical Resistance Charts in the Catalogue. The maximum and minimum temperatures allowed for the pipe material is based on the service (see below). Enviropipes can supply white coextruded pipe, which has an external UV resistant HDPE layer, reducing the wall temperatures for above ground pipelines in hot climates due to solar radiation absorption.

ServiceApplicable
Standard
Minimum
Temperature
(PE100)
Maximum
Temperature
(PE100)
Fuel GasAS 4645.3-10°C40°C
WaterAS/NZS 4130In excess of -20°C80°C
AirPIPA POP002-20°C60°C
Support Spans for Horizontal Pipes

The following table is suggested support spans in metres, for above ground pipes to limit a pipe’s vertical deflection to 200 times less than the span between supports.

The following assumptions have been made to enable the calculations.

  1. Pipe is not under pressure and is full of water.
  2. Design life is for 100 years
  3. Average temperature of the pipe wall is a constant, at a maximum 40°C
  4. Pipe supports allow the pipe to move axially.
  5. No thermal expansion effects considered.
  6. No external earthquake, wind or live loads applied to the pipe.
  7. Pipe is laid horizontally.
ODSDR 41SDR 26SDR 21SDR 17SDR 13.6SDR 11SDR 9SDR 7.4
160.600.600.60
200.600.730.700.700.70
250.570.700.830.750.750.75
320.550.670.800.930.850.850.85
400.540.650.770.901.030.900.900.90
500.640.750.871.001.131.051.051.05
630.740.850.971.101.231.101.101.10
750.840.951.071.201.331.301.301.30
900.941.051.171.301.431.401.401.40
1101.041.151.271.401.531.501.501.50
1251.141.251.371.501.631.701.701.70
1401.241.351.471.601.731.701.701.70
1601.341.451.571.701.832.002.002.00
1801.441.551.671.801.932.082.232.40
2001.561.681.811.942.092.252.422.60
2251.681.811.952.092.252.422.602.80
2501.811.942.092.242.412.592.793.00
2801.932.072.232.392.572.772.983.20
3152.112.262.432.622.823.033.263.50
3552.292.462.642.843.063.293.533.80
4002.472.652.853.073.303.553.814.10
4502.712.913.133.373.623.894.194.50
5002.893.113.343.593.864.154.464.80
5603.133.363.623.894.184.504.845.20
6303.573.794.044.294.574.865.175.50
7103.894.144.404.684.985.305.646.00
8004.284.554.845.155.485.836.206.60
9004.474.765.065.395.736.106.496.90
10004.865.175.505.866.236.637.057.50
Values in bold type are as per AS/NZS 3500.1, other values determined by commonly used beam formulae for deflection.
Expansion and Contraction

Due to temperature effects and the Poisson effect, a HDPE pipe material will apply a stress which can be relieved by allowing the pipeline to move. Allowance for movement can be achieved by installing expansion joints, or by snaking a pipeline above ground.

Mitigation of thermal effects can be achieved by:

  • Using pipe with an external co-extruded white outer HDPE layer to reduce temperature of the pipe due to solar radiation absorption.
  • Burying a pipe as it is laid to prevent day/night temperature variation effects during construction.

Nomograms

Enviropipes Solid Walled Pipe Namograms in the following links and are based upon the Colebrook-White equation. Conditions to using these diagrams:

  1. This diagram is based upon clean fresh water flow at 20°C in full pipes.
  2. Darcy friction factor coefficient for clean HDPE is 0.015.
  3. Effects of entrance, exit losses, bends, pits, and junctions excluded from the analysis.
  4. For flow velocities below 0.5m/s or above 3m/s, local authority approval may be required.
  5. Maximum flow velocities above 0.5m/s encourages the self cleaning ability of the pipe, reducing the likelihood of silt deposits.
  6. The head loss does not include the effects of gravity (ie any changes in elevation)

Certifications

  • AS/NZS 4129:2020
    Fittings for Polyethylene Pipes for pressure applications
    WCMS 2016
  • AS/NZS 4130:2018
    Polyethylene (PE) Pipes for pressure applications
    WCMS 2016
  • AS/NZS 5065:2005
    Polyethylene and Polypropylene pipes and fittings for drainage and sewerage applications
    WCMS 2016

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