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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-45:Tests--Durability test by water immersion
Standard published on 24.11.2003
Selected format:Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-48: Tests - Temperature-humidity cycling
Standard published on 29.6.2007
Selected format:Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-5:Tests--Torsion/twist
Standard published on 4.12.2002
Selected format:Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-6:Tests--Tensile strength of coupling mechanism
Standard published on 13.2.2001
Selected format:Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 2-9:Tests--Shock
Standard published on 24.11.2003
Selected format:Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 3-1:Examinations and measurements--Visual examination
Standard published on 24.11.2003
Selected format:Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-16: Examinations and measurements - Endface radius of spherically polished ferrules
Standard published on 29.6.2007
Selected format:Fibre optic interconnecting devices and passive components--Basic test and measurement procedures--Part 3-2:Examinations and measurements--Polarization dependence of a single-mode fibre optic device
Standard published on 13.2.2001
Selected format:Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 3-20: Examinations and measurements - Directivity of fibre optic branching devices
Standard published on 29.6.2007
Selected format:Fibre optic interconnecting devices and passive components - Basic test and measurement procedures Part 3-26: Examinations and measurements - Measurement of the angular misalignment between fibre and ferrule axes
Standard published on 29.6.2007
Selected format:Latest update: 2026-09-10 (Number of items: 2 300 145)
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