1 Scope
This part of DL/T 768 specifies the technical requirements and test methods of hot dip galvanized coatings on fabricated iron and steel articles.
This part is applicable to the hot dip galvanized coating on electric power fittings made of materials such as steel, cast iron, etc.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 470 Zinc Ingots (GB/T 470-2008, ISO 752:2004, MOD)
GB/T 4956 Non-Magnetic Coatings on Magnetic Substrates - Measurement of Coating Thickness - Magnetic Method (GB/T 4956-2003, ISO 2178:1982, IDT)
GB/T 5267.3 Fasteners - Fasteners - Hot Dip Galvanized Coatings (GB/T 5267.3-2008, ISO 10684:2004, IDT)
GB/T 13825 Metallic Coatings-Hot Dip Galvanized Coatings on Ferrous Materials-Gravimetric Determination of the Mass Per Unit Area (GB/T 13825-2008, ISO 1460:1992, IDT)
GB/T 13912-2002 Metallic Coatings - Hot Dip Galvanized Coatings on Fabricated Iron and Steel Articles - Specifications and Test Methods (ISO 1461:1999, MOD)
HG/T 3668 Zinc Rich Primer
3 Terms and Definitions
For the purposes of this part, the following terms and definitions apply.
3.1
hot dip galvanizing
the formation process of galvanized and zinc-iron alloy coating on surface of the pretreated steel or iron castings by immerging it into molten liquid zinc
Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 Sampling
5 Technical Requirements
6 Test Methods
Annex A (Informative) Galvanized Coating Uniformity Test
