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Standards GB - Chinese national standards - Page 8832
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 6480-1986
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Carbide detachable bit for percussive drilling
WITHDRAWN published on 1.1.1986
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GB/T 6480-1994
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Carbide detachable bit for rock drilling
WITHDRAWN published on 13.6.1994
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GB/T 6480-2002
WITHDRAWN
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Carbide detachable bit for rock drilling
WITHDRAWN published on 29.11.2002
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GB 6481-1986
WITHDRAWN
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Hollow hexagonal drill rods for percussive drilling
WITHDRAWN published on 1.1.1986
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GB/T 6481-1994
WITHDRAWN
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Hollow hexagonal drill rods with tapered connection for rock drilling
WITHDRAWN published on 13.6.1994
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GB/T 6481-2002
WITHDRAWN
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Hollow hexagonal drill rods with taperd connection for rock drilling
WITHDRAWN published on 29.11.2002
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GB 6482-1986
WITHDRAWN
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Extension drill-steel with rope threaded for percussive long-hole drilling
WITHDRAWN published on 1.1.1986
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GB/T 6482-1994
WITHDRAWN
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Rope thread extension steel bars for rock drilling
WITHDRAWN published on 13.6.1994
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GB/T 6483-1986
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Soft mechanical joint grey cast iron pipe
WITHDRAWN published on 7.6.1986
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GB/T 6483-2008
WITHDRAWN
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Soft mechanical joint grey cast iron pipe
WITHDRAWN published on 10.10.2008
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