IAPMO IGC 189-2019涵盖了机械应用于管道系统内表面的环氧树脂阻隔涂层的制造和性能的最低标准，旨在规定应用于管道系统内部的环氧树脂阻隔涂层的最低测试性能和测试要求。

IAPMO IGC 189-2019 covers minimum standards for the manufacture and performance of epoxy barrier coatings to be mechanically applied to the interior surfaces of piping systems and is intended to prescribe minimum test performance and test requirements for epoxy barrier coatings applied to the interior of piping systems.