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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
Leaching equipment of forced external circulation
WITHDRAWN published on 13.11.1997
Selected format:Pipe supports and hangers—Part 1:Technical specification
WITHDRAWN published on 1.12.1997
Selected format:Pipe supports and hangers—Part 2:Pipe attachments
WITHDRAWN published on 1.12.1997
Selected format:Pipe supports and hangers—Part 3:Middle connection attachments and building structure attachments
WITHDRAWN published on 1.12.1997
Selected format:Prism binoculars
WITHDRAWN published on 1.12.1997
Selected format:Galilean binoculars
WITHDRAWN published on 1.12.1997
Selected format:Metalforming machinery—Safety requirements
WITHDRAWN published on 1.12.1997
Selected format:Anti-counterfeiting stamp-ink—Part 1:Technical requirements of UV-excitation flourescent anti-counterfeiting permeating stamp-ink
WITHDRAWN published on 1.12.1997
Selected format:Agricultural tractors and implements—Four-point rigid hitch—Specifications
WITHDRAWN published on 1.12.1997
Selected format:Agricultural tractors and machinery—Power take-off drive shafts and position of power-input connection
WITHDRAWN published on 1.12.1997
Selected format:Latest update: 2026-04-21 (Number of items: 2 274 412)
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