ISO 8179-2:2017
Ductile iron pipes, fittings, accessories and their joints -- External zinc-based coating-- Part 2: Zinc-rich paint
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ISO 8179-2:2017 specifies an external protective coating system which is factory-applied to ductile iron pipeline components as specified in ISO 2531, ISO 7186 and ISO 16631. This coating system comprises a zinc-rich paint followed by a finishing layer that can be bituminous paint or synthetic resin compatible with zinc rich paint coating.NOTE ISO 8179-1 addresses metallic zinc-based coatings.