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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
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WITHDRAWN published on 8.10.1982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WITHDRAWN published on 5.11.2007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WITHDRAWN published on 19.11.2015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WITHDRAWN published on 19.11.2015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WITHDRAWN published on 19.11.2015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:Requirements of the greenhouse gas emission accounting and reporting—Part 9:Ceramic production enterprise
WITHDRAWN published on 19.11.2015
Selected format:Coal-based needle coke
WITHDRAWN published on 9.10.2015
Selected format:Test methods for centrifugalmixed flowaxial and regenerative pumps
WITHDRAWN published on 31.3.1989
Selected format:Rotodynamic pumps—Hydraulic performance acceptance tests—Grades 1 and 2
WITHDRAWN published on 19.9.2005
Selected format:Water saving enterprises—Monosodium L-glutamate industry
WITHDRAWN published on 13.10.2015
Selected format:Latest update: 2026-01-26 (Number of items: 2 257 479)
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