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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
Standard test methods for rating and classifying inclusions in steel—Scanning electron microscope
WITHDRAWN published on 24.6.2014
Selected format:Zinc-coated low-carbon steel wire for cotton baling
WITHDRAWN published on 1.1.1982
Selected format:Variable-frequency drive above 1kV and not exceeding 35kV—Part 1: Technical conditions
WITHDRAWN published on 6.5.2014
Selected format:Variable-frequency drive above 1kV and not exceeding 35kV—Part 2: Test methods
WITHDRAWN published on 6.5.2014
Selected format:Variable-frequency drive of 1 kV and below—Part 1: Technical conditions
WITHDRAWN published on 6.5.2014
Selected format:Variable-frequency drive of 1kV and below—Part 2Test methods
WITHDRAWN published on 6.5.2014
Selected format:Plugs, socket-outlets and ship couplers for high-voltage shore connection systems(HVSC-Systems)—Part 1:General requirements
WITHDRAWN published on 24.6.2014
Selected format:Plugs, socket-outlets and ship couplers for high-voltage shore connection systems(HVSC-Systems)—Part 2:Dimensional compatibility and interchangeability requirements for accessories to be used by various types of ships
WITHDRAWN published on 24.7.2014
Selected format:Specification of hot rolled steel sections for caterpillar treads
WITHDRAWN published on 1.1.1982
Selected format:Specification for high carbon chromium stainless bearing steels
WITHDRAWN published on 10.5.1982
Selected format:Latest update: 2026-03-13 (Number of items: 2 266 261)
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