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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
Pneumatic fluid power - Connections - Ports and stud ends
WITHDRAWN published on 25.6.2008
Selected format:Hydraulic fluid power--Fluids--Method for coding the level of contamination by solid particles
WITHDRAWN published on 11.1.1993
Selected format:Phenolic moulding materials
WITHDRAWN published on 20.12.1995
Selected format:Prestressed concrete hollow-core slabs
WITHDRAWN published on 6.1.1993
Selected format:Hydraulic fluid power—Filter elements—Verification of fabrication integrity
WITHDRAWN published on 11.1.1993
Selected format:Hydraulic fluid power—Filter elements—Verification of material compatibility with fluids
WITHDRAWN published on 11.1.1993
Selected format:Hydraulic fluid power—Filter elements—Verification of collapse/burst resistance
WITHDRAWN published on 11.1.1993
Selected format:Hydraulic fluid power—Filter elements—Method for end load test
WITHDRAWN published on 11.1.1993
Selected format:Hydraulic fluid power--Cylinders--Rodend plain eyes--Mounting dimensions
WITHDRAWN published on 11.1.1993
Selected format:Hydraulic fluid power—Code for identification of valve mounting surfaces
WITHDRAWN published on 11.1.1993
Selected format:Latest update: 2026-07-30 (Number of items: 2 290 198)
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