1 Scope
This part of QB/T 1901 specifies general requirements concerning gold alloy coverings.
It is applicable to watch-cases and their accessories, including bracelets when they are permanently attached to the case.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
QB/T 1901.2 Watch cases and accessories —Gold alloy coverings — Part 2: Determination of fineness, thickness, corrosion resistance and adhesion.
QB/T 1901.3 Watch cases and accessories — Gold alloy coverings — Part 3: Abrasion resistance tests of a type of coating on standard gauges
3 Terms and definitions
For the purposes of this part, the following terms and definitions apply.
3.1 gold-plated covering
gold alloy covering achieved with a method by which a layer of gold alloy is applied to the component by an electrolytic, chemical or other process
3.2 rolled-gold covering
gold alloy covering achieved with a method by which a layer of gold alloy is bonded to a sheet or a bar of base metal, the whole then being subjected to reduction by rolling
3.3 gold capping
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Fineness of gold alloy
5 Measurement of thickness of covering
6 Coating thickness
7 Marking of coverings
8 Quality requirements
