GB/T 7962.20-1987Colourless optical glass test methods--Density (English PDF)
无色光学玻璃测试方法 密度测试方法
GB/T 7962.20 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 7962.20-2010 | Test methods of colourless optical glass - Part 20: Density | Valid |
| GB/T 7962.20-1987 | Colourless optical glass test methods--Density | Obsolete |
GB/T 7962.20-1987 is obsolete. It has been replaced by GB/T 7962.20-2010. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
National Bureau of Standards
Level / Type
National · Recommended
Issue date
June 20, 1987
Implementation date
December 1, 1987
Scope
GB/T 7962.20-1987 is the English-translated version of 无色光学玻璃测试方法 密度测试方法.
GB/T 7962.20-1987 is the Chinese national standard "Colourless optical glass test methods--Density". It was issued on June 20, 1987 by the National Bureau of Standards, and took effect on December 1, 1987. It is obsolete: it has been replaced by GB/T 7962.20-2010.
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Document preview — GB/T 7962.20-1987
National Standard of the People's Republic of China
Issued by: National Bureau of Standards
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: National Bureau of Standards.
Date of issue: 1987-06-20.
Date of implementation: 1987-12-01.
Status: obsolete, replaced by GB/T 7962.20-2010.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 45505.4-2025Test methods of flat panel display glass substrate — Part 4: Mechanical properties
- GB/T 44450-2024Optics and photonics - Optical materials and components - Characterization of optical materials used in the infrared spectral range from 0.78 μm to 25 μm
- GB/T 44567-2024Optics crystal—Ultraviolet grade calcium fluoride crystal
- GB/T 903-2019Colourless optical glass
- GB/T 36265-2018Infrared optical glass
- GB/T 15488-2010Colour filter glass
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Related Standards
GB/T 7962.21-2019 — Test method of colourless optical glass -- Part 21: Resistance to attack by aqueous alkaline solutions
GB/T 7962.19-1987 — Colourless optical glass test methods--Relative lapping hardness
GB/T 7962.21-1987 — Colourless optical glass test methods--Knoop hardness
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GB/T 7962.20-1987
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