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GB - Chinese national standards - Page 6228

Standards GB - Chinese national standards - Page 6228

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 15450-1995 5.1.1995
GB/T 15450-1995 WITHDRAWN

Blank detail specification for silicon dual-gate field-effect transistors

WITHDRAWN published on 5.1.1995

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in 5 working days
Preview GB/T 15451-1995 12.1.1995
GB/T 15451-1995 WITHDRAWN

Industrial circulating cooling water—Determination of alkalinity

WITHDRAWN published on 12.1.1995

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in 2 working days
Preview GB/T 15452-1995 12.1.1995
GB/T 15452-1995 WITHDRAWN

Industrial circulating cooling water—Determination of calcium and magnesium— EDTA titration method

WITHDRAWN published on 12.1.1995

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in 2 working days
Preview GB/T 15453-1995 12.1.1995
GB/T 15453-1995 WITHDRAWN

Industrial circulating cooling water—Determination of chloride—Silver nitrate titration method

WITHDRAWN published on 12.1.1995

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in 2 working days
Preview GB/T 15453-2008 1.4.2008
GB/T 15453-2008 WITHDRAWN

Water for industrial circulating cooling system and boiler—Determination of chloride

WITHDRAWN published on 1.4.2008

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in 3 working days
Preview GB/T 15454-1995 12.1.1995
GB/T 15454-1995 WITHDRAWN

Industrial circulating cooling water—Determination of sodium, ammonium, potassium, magnesium and calcium—Ions chromatography

WITHDRAWN published on 12.1.1995

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Preview GB/T 15455-1995 12.1.1995
GB/T 15455-1995 WITHDRAWN

Industrial circulating cooling water—Determination of dissolved oxygen—Iodimetry

WITHDRAWN published on 12.1.1995

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in 2 working days
Preview GB/T 15456-1995 12.1.1995
GB/T 15456-1995 WITHDRAWN

Industrial circulating cooling water—Determination of the chemical oxygen demand —Potassium permanganate method

WITHDRAWN published on 12.1.1995

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Preview GB/T 15456-2008 1.4.2008
GB/T 15456-2008 WITHDRAWN

Industrial circulating cooling water—Determination of the chemical oxygen demand—Potassium permanganate method

WITHDRAWN published on 1.4.2008

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Preview GB/T 15457-1995 12.1.1995
GB/T 15457-1995 WITHDRAWN

Method for determining lubrication of photographic film and film base

WITHDRAWN published on 12.1.1995

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in 2 working days

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