13mm or 1/2 inch Polyethylene supply pipe is a flexible tube resistant to algae formation, low temperatures and ultra violet radiation. It is often used in smaller micro irrigation systems to act as the main supply pipe. It can be laid on the surface or buried. There are a number of connections that are compatible with this sized pipe including both compression and barbed fittings. Smaller micro irrigation feeding tube, drippers and sprinklers can be fitted directly to this pipe. It is also used for supplying the Colibri Pop Up Sprinklers.