GB - Chinese national standards - Page 99

Standards GB - Chinese national standards - Page 99

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 11236-2021

Copper-bearing contraceptive intrauterine devices—Requirements and tests

Standard published on 1.12.2021

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336.30 USD


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GB 11239.1-2005

Operation microscopes Part1:Requirements and test methods

Standard published on 24.1.2005

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486.30 USD


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GB/T 11239.1-2025

Optics and photonics—Operation microscopes—Part 1: Requiremnts and test methods
Execute Date: july 2027

Standard published on 30.6.2025

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511.30 USD


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GB/T 1124.1-2007

Convex and concave milling cutters - Part1The types and dimensions

Standard published on 25.6.2007

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198.80 USD


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GB/T 1124.2-2007

Convex and concave milling cutters - Part 2Technical specifications

Standard published on 25.6.2007

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198.80 USD


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GB/T 11251-2020

Alloy structural steel plate and strip

Standard published on 6.3.2020

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168.80 USD


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GB/T 11251-2025

Alloy structural steel plate, sheet and strip
Execute Date: may 2026

Standard published on 31.10.2025

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348.80 USD


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GB/T 11253-2019

Cold-rolled sheet and strip of carbon structural steels

Standard published on 18.10.2019

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168.80 USD


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GB/T 11259-2015

Non-destructive testing—Practice for fabrication and control of steel reference blocks used in ultrasonic testing

Standard published on 9.10.2015

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348.80 USD


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