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Standards GB - Chinese national standards - Page 7271
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 21552-2008
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Fireworks and firecracker - Black powder banger (Product of firecracker)
WITHDRAWN published on 24.3.2008
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GB 21553-2008
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Fireworks and firecracker - Rockets (Product of aerial)
WITHDRAWN published on 24.3.2008
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GB 21555-2008
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Fireworks and firecrackers - Product of Aerial - Double - bang firecracker
WITHDRAWN published on 24.3.2008
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GB/T 21558-2008
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Rigid polyurethane cellular plastics used in the thermal insulation of building
WITHDRAWN published on 24.3.2008
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GB/T 21559.1-2008
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Rolling bearings—Linear motion rolling bearings—Part 1:Dynamic load ratings and rating life
WITHDRAWN published on 31.3.2008
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GB/T 21559.2-2008
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Rolling bearings—Linear motion rolling bearings—Part 2:Static load ratings
WITHDRAWN published on 31.3.2008
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GB/T 2156-1991
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Rotary handle nut
WITHDRAWN published on 1.1.1991
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GB/T 21561.1-2008
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Railway applications—Rolling stock—Pantographs—Characteristics and tests—Part 1:Pantographs for mainline vehicles
WITHDRAWN published on 24.3.2008
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GB/T 21561.1-2018
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Railway applications—Rolling stock pantographs characteristics and tests—Part 1Pantographs for mainline vehicles
WITHDRAWN published on 28.12.2018
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GB/T 21561.2-2008
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Railway applications—Rolling stock—Pantographs—Characteristics and tests—Part 2:Pantographs for metros and light rail vehicles
WITHDRAWN published on 24.3.2008
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