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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
Methods of measurement of thyratrons and gas-filled rectifier tubes
WITHDRAWN published on 1.1.1982
Selected format:Methods of measurement for thyratrons and gas-filled rectifier tubes
WITHDRAWN published on 30.12.1994
Selected format:Methods for measurement of capacity of pump
WITHDRAWN published on 23.3.1991
Selected format:Projectable image area on 70 mm motion-picture film,8/70 format
WITHDRAWN published on 10.12.2015
Selected format:Projectable image area on 70 mm motion-picture film,15/70 format
WITHDRAWN published on 10.12.2015
Selected format:Centrifugal pumps for refinery, chemical and petrochemical processes General technical specifications
WITHDRAWN published on 8.10.1982
Selected format:Centrifugal pumps for petroleum petrochemical and natural gas industries
WITHDRAWN published on 5.11.2007
Selected format:Requirements of the greenhouse gas emissions accounting and reporting—Part 10:Chemical production enterprise
WITHDRAWN published on 19.11.2015
Selected format:Requirements of the greenhouse gas emission accounting and reporting—Part7:Flat glass enterprise
WITHDRAWN published on 19.11.2015
Selected format:Requirements of the greenhouse gas emission accounting and reporting—Part 8:Cement enterprise
WITHDRAWN published on 19.11.2015
Selected format:Latest update: 2026-03-30 (Number of items: 2 269 988)
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