50mm black PE100 HDPE pipe (high density polyethylene) available in 25, and 100m coils. 16 bar maximum operating pressure SDR 9-rated 2.3mm (min) /2.7mm (max) wall thickness 14.6mm (min) /15.7mm (max) internal diameter 20.3mm maximum outside diameter This highly versatile product is suitable for almost any non-potable water application, as well as above ground potable water distribution networks. Check with your local water authority before using for potable drinking water as blue MDPE may be required. Also suitable for hydroelectricity schemes, geothermal pipework, irrigation, aquaculture, marine outfalls and many other projects. Replaces what was previously known as 20mm black MDPE or 20mm black alkathene pipe Flexible, lightweight and easy to install Corrosion free material for longer life Tough black PE100 HDPE material Fully compatible with a range of push-fit fittings from JDP Suitable for open-cut and no-dig installation methods and for use in pipeline rehabilitation projects