ISO 17456:2006 http://www.iso.org/ ISO standards and projects ISO - International Organization for Standardization 240 http://www.iso.org/iso/logo_iso.gif http://www.iso.org ISO 17456:2006 ISO 17456:2006 - Plastics piping systems -- Multilayer pipes -- Determination of long-term strength This document reached stage 90.93 on 2010-03-17 , TC/SC: ISO/TC 138/SC 5, ICS: 23.040.20 Published standards