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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
Rubber,vulcanized—Determination of low-temperature characteristics—Temperature-retraction procedure(TR test)
WITHDRAWN published on 15.10.2002
Selected format:Vulcanized, rubbers--Determination of compression set under constant deflection at normal and high temperatures
WITHDRAWN published on 1.1.1987
Selected format:Rubber, Vulcanized or thermoplastic—Determination of compression set at ambient elevated or low temperatures
WITHDRAWN published on 28.10.1996
Selected format:Electrical indicating measuring instruments--General specification
WITHDRAWN published on 16.10.1976
Selected format:Rubber, Vulcanized--Determination of adhesion to metal--One-plate method
WITHDRAWN published on 25.5.1987
Selected format:Rubber--Determination of adhesion to rigid materials using conical shaped parts
WITHDRAWN published on 25.5.1987
Selected format:Rubber, vulcanized--To zone ageing--Static strain test method
WITHDRAWN published on 25.5.1987
Selected format:Rubber, vulcanized or thermoplastic—Resistance to ozone cracking—Static strain test
WITHDRAWN published on 10.1.2003
Selected format:Rubbervulcanized--Determination method of swelling index
WITHDRAWN published on 25.5.1987
Selected format:Rubber--Identification--Infra-red spectrometric method
WITHDRAWN published on 1.1.1987
Selected format:Latest update: 2026-06-11 (Number of items: 2 281 927)
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