QB/T 4055.2-2011 (English Version) PDF

Scope: This standard specifies the technical requirements, test methods, inspection rules and packaging, marking, transportation and storage of carbide cermet watch cases and straps for watches. This standard applies to watch cases and straps made of carbide cermet materials with tungsten carbide (WC) or titanium carbide (TiC) as the main component, and watch cases and straps made of carbide cermet materials with other components. Can also be used as a reference.

QB/T 4055.2-2011 Referenced Document

GB/T 10700 Test methods for elastic moduli of fine ceramics (advanced ceramics,advanced technical ceramics).Bending method
GB/T 19719 Jewellery-Determination of the release of nickel-Method of spectrometry
GB/T 2828.1 Inspection procedure by count sampling part 1: Lot by lot inspection sampling plan retrieved by acceptance quality limit (AQL)*， 2013-02-15 Update
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability)
GB/T 3489 Hardmetals.Metallographic determination of porosity and uncombined carbon*， 2015-12-10 Update
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GB/T 7997 Hardmetals.Vickers hardness test*， 2014-07-24 Update
QB/T 1898 Anti-shock watch
QB/T 1901.2-2006 Watch-cases and accessories good alloy covering Part 2: Determination of fineness, thickness, corrosion resistance and adhension