Designed for higher pressure scheme/mains water supply applications and use. Metric-sized poly pipes are measured by outside diameter and generally considered more precise. Metric pipe is rigid hard pipe, so is sealed with an o-ring around the outside of the pipe. Cowaramup Agencies' extensive range of Philmac fittings start from 15mm up to 100mm. Call, or venture in store for pricing. T: 9755 5279.