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QB/T 2405-2020Horological jewel (English PDF)

钟表宝石元件

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Issued by

Ministry of Industry and Information Technology

Level / Type

National · Recommended

Issue date

August 31, 2020

Implementation date

January 1, 2021

Scope

QB/T 2405-2020 is the English-translated version of 钟表宝石元件.

QB/T 2405-2020 — Horological jewel

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Document preview — QB/T 2405-2020

National Standard of the People's Republic of China

Classification: Y 11
Replacing: QB/T 2405-2010; QB/T 2449-1999

Issued by: Ministry of Industry and Information Technology

What this standard covers1
Document data2
Standards quoted by this document3

What this standard covers

This standard specifies the classification, requirements, test methods, inspection rules, markings, and packaging of gemstone components for watches and clocks (hereinafter referred to as "gemstone components"), and specifies the size series of gemstone components. This standard applies to the functional jewel components of clocks and watches installed on the movement of clocks and stopwatches, as well as the functional jewel components installed on meters and various devices.

Document data

Chinese classification (CCS): Y11.

Estimated length of the Chinese original: 39,339 words.

Supersedes the earlier edition QB/T 2405-2010; QB/T 2449-1999.

Standards quoted by this document

GB/T 1031; GB/T 2828.1; GB/T 2829

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 26 pages — is available in the English PDF.

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