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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
Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltages up to and including 500kV - Part 3: Sealing end
Standard published on 30.6.2008
Selected format:Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltages up to and including 500kV - Part 4: Joint
Standard published on 30.6.2008
Selected format:Oil-filled, paper or polypropylene paper laminate insulated, metal-sheathed cables and accessories for alternating voltages up to and including 500kV - Part 5: Pressure tanks
Standard published on 30.6.2008
Selected format:Compression and mechanical connectors for power cables for rated voltages up to 35kV(Um=40.5kV) - Test methods and requirements
Standard published on 31.12.2008
Selected format:Self-locking nutstwoluganchorsealing
Standard published on 22.12.1988
Selected format:Plastic insulated control cables
Standard published on 31.3.2020
Selected format:Single and multicore non-radial field power cables with extruded solid insulation for rated voltages 1kV and 3 kV
Standard published on 30.6.2008
Selected format:Electrical installations in ships - Cables for control and instrumentation circuits 150/250V(300V)
Standard published on 31.12.2008
Selected format:Nitrobenzene
Standard published on 24.4.2009
Selected format:Direct black L-3BGC.I. Direct black 19
Standard published on 23.12.2010
Selected format:Latest update: 2026-04-21 (Number of items: 2 274 412)
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