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GB/T 39141.3-2022Mineral and sapphire watch-glasses - Part 3: Qualitative criteria and test methods (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 14, 2022

Implementation date

May 1, 2023

Scope

GB/T 39141.3-2022 (Mineral and sapphire watch-glasses - Part 3: Qualitative criteria and test methods) is available as an English-translated PDF.

GB/T 39141.3-2022 is the Chinese standard "Mineral and sapphire watch-glasses - Part 3: Qualitative criteria and test methods". Its scope clause reads: This document specifies the defect term and test methods for round inorganic and sapphire watch glass with basic physical and aesthetic requirements. Its clauses include terms and definitions.

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Document preview — GB/T 39141.3-2022

National Standard of the People's Republic of China

ICS: 39.040.10
Classification: Y 11

Issued by: State Administration for Market Regulation, China National Standardization Administration

Introduction
1 Scope
2 Normative references

1 Scope

This document specifies the defect term and test methods for round inorganic and sapphire watch glass with basic physical and aesthetic requirements.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 39141.1-2020 Inorganic and sapphire watch glass Part 1.Dimensions and tolerances (ISO 14368-1.2000, IDT)

ISO 286-1 Geometric Specifications for Products (GPS) Linear Dimensional Tolerances ISO Code System Part 1.Tolerances, Deviations and Fittings

Part 1.Basissoftolerances,deviationsandfits]

Note. GB/T 1800.1-2020 Product Geometry and Technical Law Specification (GPS) Linear Dimension Tolerance ISO Code System Part 1.Tolerances, Deviations and Matches

The basis of integration (ISO 286-1.2010, MOD)

ISO 286-2 Product Geometric Specifications (GPS) Linear Dimensional Tolerances ISO Code System Part 2.Standard Tolerance Zone Codes

Note. GB/T 1800.2-2020 Product Geometric Specifications (GPS) Linear Dimension Tolerance ISO Code System Part 2.Standard Tolerance Zone Code and

Limit deviation table for holes and shafts (ISO 286-2.2010, MOD)

3 Terms and Definitions

Terms and definitions defined in ISO 286-1, ISO 286-2 and GB/T 39141.1-2020 and the following terms and definitions apply to this document.

3.1 defect

Defects arising from the production, processing and handling of inorganic and sapphire watch glass materials.

Note. See Appendix A for the inspection method of appearance defects.

3.2 chip

damage at the edges.

3.3 scratch

Continuous or discontinuous grooves with blunt or broken edges, which may be irregular in width and depth.

3.4 ripple waveeffect

Water streak defects in glass. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 14368 · ISO 286

Cited by

GB/T 39141.4-2024Mineral and sapphire watch-glasses - Part 4: Anti-reflective treatment

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