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GB - Chinese national standards - Page 6698

Standards GB - Chinese national standards - Page 6698

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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Preview GB/T 28629-2012 31.7.2012
GB/T 28629-2012 WITHDRAWN

Methods for chemical analysis of free silicon dioxide for cement clinker

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Preview GB/T 28638-2012 31.7.2012
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Heat loss test for thermal insulation structure and evaluation methods for thermal insulation efficiency of district heating pipes

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Preview GB/T 28654-2012 3.9.2012
GB/T 28654-2012 WITHDRAWN

Trichlorosilane for industrial use

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Preview GB/T 28659-2012 3.9.2012
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Standard of cultivation technique on shawo radish under protective measures

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Preview GB/T 28687-2012 3.9.2012
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Numerical control die casting machines

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Preview GBN 287-1988 8.6.1988
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WITHDRAWN published on 8.6.1988

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Preview GB/T 28704-2012 3.9.2012
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Non-destructive testing—Test method for ultrasonic guided wave testing based on magnetostrictive effects

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Preview GB/T 28712.1-2012 3.9.2012
GB/T 28712.1-2012 WITHDRAWN

Types and basic parameters of heat exchangers—Part 1:Floating heat exchangers

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Preview GB/T 28712.2-2012 3.9.2012
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Types and basic parameters of heat exchangers—Part 2:Fixed tube sheet heat exchangers

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Preview GB/T 28712.3-2012 3.9.2012
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Types and basic parameters of heat exchangers—Part 3:U-tube heat exchangers

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