Hunter offer two different pipe systems for different applications; PVCu solid wall system and Quantum structured wall. The comprehensive range of Quantum pipe and fittings are featured in our online catalogue. The revolutionary high performance PVCu structured wall Quantum Sewer pipe with Water Industry approval for gravity sewer applications is a lightweight, cost effective, modern alternative to clay or concrete pipes. Available in 150, 225 and 300mm diameters, Quantum Highway Pipe system has Department of Transport approval for use in highway carrier and filter drains.