本文件规定了适用于工厂应用的热塑性酸改性聚烯烃（TMPO）内衬的要求和试验方法，用于符合EN 545、EN 598和EN 969的球墨铸铁管的重负荷腐蚀防护。本文件也适用于仅承插端涂有TMPO的管道。配件和附件单独投保 根据EN 14901-2。

This document specifies the requirements and test methods applicable to factory applied internal lining made of thermoplastic acid modified polyolefin (TMPO) for the heavy duty corrosion protection of ductile iron pipes conforming to EN 545, EN 598 and EN 969. This document also applies to pipes with only socket and spigot ends coated with TMPO. Fittings and accessories are covered separately by EN 14901-2.