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Standards GB - Chinese national standards - Page 5035
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 50644-2011
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Standard for compiling the design documents of oil and gas pipeline projects
Standard published on 18.2.2011
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GB 50645-2011
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Code for construction quality acceptance of insulation in petrochemical engineering
Standard published on 18.2.2011
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GB 50646-2020
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Technical standard for specialty gas system engineering
Standard published on 27.2.2020
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GB 50647-2011
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Code for planning of intersections on urban roads
Standard published on 1.1.2011
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GB 50648-2011
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Code for design of recirculating cooling water system in chemical palnt
Standard published on 1.1.2011
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GB/T 50649-2011
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Code for design of energy saving for water resources and hydropower projects
Standard published on 1.1.2011
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GB 50650-2011
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Code for design protection of petrochemical plant against lightning
Standard published on 1.1.2011
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GB/T 50651-2011
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Preparation standard for general planning on mining area of coal industry
Standard published on 1.1.2011
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GB 50652-2011
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Code for risk management of underground works in urban rail transit
Standard published on 18.2.2011
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GB 50653-2011
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Code for construction of non-ferrous metals mine sinking and drifting engineering
Standard published on 18.2.2011
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