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Standards GB - Chinese national standards - Page 4659

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 46423-2025

Technical specification for recovery of venting gas for transmission pipelines

Standard published on 5.10.2025

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GB/T 46424-2025

Failure analysis method for oil and gas transportation pipeline girth welds

Standard published on 5.10.2025

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GB/T 46425-2025

Technical specification for ecological restoration of coal gangue piles

Standard published on 5.10.2025

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GB/T 46426-2025

Design specification for produced water treatment of coalbed methane well

Standard published on 5.10.2025

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in 3 working days

GB/T 46427-2025

Assessment method of intelligent heavy medium separation system in coal preparation plant

Standard published on 5.10.2025

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GB/T 46428.1-2025

Metallic materials—Miniature specimens of plate and rod—Part 1: Fatigue test method

Standard published on 31.10.2025

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GB/T 46429.2-2025

Petroleum, petrochemical and natural gas industries—External corrosion protection of risers by coatings and linings—Part 2: Maintenance and field repair coatings for riser pipes

Standard published on 31.10.2025

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GB/T 46430-2025

PhotographyTransmission and reflection densitometers—Method for determining performance

Standard published on 31.10.2025

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