ISO 8179-1:2017
Ductile iron pipes, fittings, accessories and their joints — External zinc-based coating — Part 1: Metallic zinc with finishing layer
ISO 8179-1:2017 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 an electro-deposited metallic zinc-based coating of
- pure metallic zinc with a purity of 99,99 %,
- zinc and aluminium alloy with or without other metals, or
- other zinc alloys
followed by a finishing layer that can be bituminous paint or synthetic resin compatible with zinc-based coating.
NOTE ISO 8179-2 deals with zinc-rich paint coating.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Zinc-based coating
5.1 Pipeline component surface condition
5.2 Method of application
5.3 Coating characteristics
5.4 Zinc-based coating mass
5.5 Repairs to the zinc-based coating
6 Finishing layer
7 Test methods
7.1 Determination of zinc-based coating mass
7.2 Determination of the dry film thickness of the finishing layer
Annex A (informative) Field verification of the metallic zinc-based coating mass on a finished product
Annex B (informative) Field of use in relation to the characteristics of soils
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Materials
5 Zinc-based coating
5.1 Pipeline component surface condition
5.2 Method of application
5.3 Coating characteristics
5.4 Zinc-based coating mass
5.5 Repairs to the zinc-based coating
6 Finishing layer
7 Test methods
7.1 Determination of zinc-based coating mass
7.2 Determination of the dry film thickness of the finishing layer
Annex A (informative) Field verification of the metallic zinc-based coating mass on a finished product
Annex B (informative) Field of use in relation to the characteristics of soils
Bibliography