Standards GB - Chinese national standards - Page 261

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

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GB/T 13163.1-2009

Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 1: General principles

Standard published on 6.5.2009

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GB/T 13163.2-2021

Radiation protection instrumentation—Radon and radon decay product measuring instruments—Part 2Specific requirements for 222Rn and 220Rn measuring instruments

Standard published on 21.5.2021

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GB/T 13163.3-2014

Radiation protection instrumentationRadon and radon decay product measuring instrumentsPart 3: Specific requirements for radon decay product measuring instruments

Standard published on 3.9.2014

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GB/T 13163.4-2014

Radiation protection instrumentationRadon and radon decay product measuring instrumentsPart 4: Equipment for the production of reference atmospheres containing radon isotopes and their decay products (STAR)

Standard published on 3.9.2014

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GB/T 13164-2003

Submerged arc welding machine

Standard published on 5.6.2003

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