This document defines the requirements and test methods for factory applied thermoplastic acid modified polyolefin (TMPO) coatings used for the protection of ductile iron fittings and accessories according to EN 545, EN 598, EN 969, EN 12842 and EN 14525: - conveying water (e.g. potable water, raw water, …) at operating temperature up to 50 °C; or - conveying waste water at operating temperature up to 45 °C; or - conveying gas at operating temperature up to 50 °C; - suitable for external environments, i.e. soils, waters and atmospheres of all common corrosion loads, characterized in D.2.3 of EN 545:2010.