Standards GB - Chinese national standards - Page 4332

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 43753.1-2024

Methods for chemical analysis of precious metals alloys electroplating wastewater—Part 1Determination of gold, silver, platinum, palladium and iridium contents—Inductively coupled plasma-atomic emission spectrometry

Standard published on 15.3.2024

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GB/T 43753.2-2024

Methods for chemical analysis of precious metals alloys electroplating wastewater—Part 2Determination of zinc, manganese, chromium, cadmium, lead, iron, aluminium, nickel, copper and beryllium contents—Inductively coupled plasma-atomic emission spectrometry

Standard published on 15.3.2024

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GB/T 43753.3-2024

Methods for chemical analysis of precious metals alloys electroplating wastewater—Part 3Determination of sulfate content—Barium sulphate gravimetric method

Standard published on 15.3.2024

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GB/T 43753.4-2024

Methods for chemical analysis of precious metals alloys electroplating wastewater—Part 4Determination of chlorine ion—Silver chlorine turbidimetric method

Standard published on 15.3.2024

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GB/T 43754-2024

Rotary friction welding of metallic materials

Standard published on 15.3.2024

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