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Standards GB - Chinese national standards - Page 7945
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 5023.7-1997
WITHDRAWN
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Polyvinyl chloride insulated cables of rated voltages up to and including 450/750V—Part 7:Flexible cables screened and unscreened with two or more conductors
WITHDRAWN published on 30.7.1997
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GB 50231-1998
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General code for construction and acceptance of mechanical equipment installation engineering
WITHDRAWN published on 27.8.1998
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GB 50233-2005
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Code for construction and acceptance of 110~500kV overthead transmission line
WITHDRAWN published on 19.7.2005
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GB 50235-1997
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Code for construction and acceptance of industrial metallic piping
WITHDRAWN published on 5.10.1997
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GB 50236-1998
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Code for construction and acceptance of field equipment, industrial pipe welding engineering
WITHDRAWN published on 1.1.1998
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GB 5024.1-1985
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Test method for cone penetration of refractory mortar
WITHDRAWN published on 1.1.1985
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GB 5024.2-1985
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Test method for setting time of refractory mortar
WITHDRAWN published on 1.1.1985
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GB 5024.3-1985
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Test method for cold rupture bonding strength of refractory mortar
WITHDRAWN published on 1.1.1985
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GB 5024.4-1985
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Test method for cold shear bonding strength of refractory mortar
WITHDRAWN published on 1.1.1985
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GB 50243-1997
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Code for construction and acceptance of ventilation and air conditioning works
WITHDRAWN published on 20.10.1997
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