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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
Non-destructive testing—Penetrant testing—Reference test blocks
WITHDRAWN published on 11.10.2002
Selected format:Non-destructive testing—Penetrant testing—Part 1:General principles
WITHDRAWN published on 8.6.2005
Selected format:Non-destructive testing—Penetrant testing—Part 1:General principles
WITHDRAWN published on 3.9.2012
Selected format:Non-destructive testing—Penetrant testing—Part 2:Testing of penetrant materials
WITHDRAWN published on 8.6.2005
Selected format:Non-destructive testing—Penetrant testing—Part 5:Means of verification
WITHDRAWN published on 8.6.2005
Selected format:Ultrasonic non-destructive testing—Reference blocks and test procedures for the characterization of contact search unit beam profiles
WITHDRAWN published on 11.10.2002
Selected format:Hydraulic fluid power filters—Multi-pass method for evaluating filtration performance of a filter element
WITHDRAWN published on 11.10.2002
Selected format:Hydraulic fluid power—Calibration of liquid automatic particle counters
WITHDRAWN published on 11.10.2002
Selected format:Technical specifications of coal water mixture
WITHDRAWN published on 18.10.2002
Selected format:Specifications of coal water mixture(CWM)
WITHDRAWN published on 29.7.2008
Selected format:Latest update: 2025-07-07 (Number of items: 2 207 474)
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