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Std ID |
Description (Standard Title) |
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GB/T 7230-2008
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Gas detector tube measurement system
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GB/T 7231-1987
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Basic identification colours and code indications for industrial pipelines
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GB/T 7232-1987
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Terminology of metal heat treatment
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GB/T 7232-1999
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Terminology of metal heat treatment
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GB/T 7232-2012
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Terminology of metal heat treatment
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GB/T 10911-2003
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Matching of agricultural wheeled tractors and rear mounted implements
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GB/T 7233.2-2010
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Steel castings -- Ultrasonic examination -- Part 2: Steel castings for highly stressed components
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GB/T 7233-1987
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Methods for ultrasonic testing and for specifying quality levels of steel castings
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GB/T 7234-1987
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Measurement of roundness--Terms, definitions and parameters of roundness
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GB/T 7234-2004
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Geometrical Product Specifications (GPS) -- Measurement of roundness -- Terms, definitions and parameters of roundness
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GB/T 7235-1987
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Methods for the assessment of departure from roundness--Measurement of variations in radius
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GB/T 7235-2004
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Geometrical Product Specifications (GPS) -- Methods for the assessment of departure from roundness -- Measurement of variations in radius
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GB/T 7242-1987
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Centering errors of lenses
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GB/T 7242-2010
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Centering error of lenses
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GB/T 7244-1987
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Single coil spring lock washers, heavy type
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GB/T 7245-1987
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Curved single coil spring lock washers
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GB/T 7246-1987
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Wave single coil spring lock washers
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GB/T 7247.1-2001
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Safety of laser products -- Part 1: Equipment classification, requirements and user guide
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GB/T 7247.13-2013
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Safety of laser products -- Part 13: Measurements for classification of laser products
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GB/T 7247.14-2012
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Safety of laser products -- Part 14: A users guide
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GB/T 7247.3-2016
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Safety of laser products -- Part 3: Guidance for laser display and shows
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GB/T 7247.4-2016
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Safety of laser products -- Part 4: Laser guards
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GB/T 7247.9-2016
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Safety of laser products -- Part 9: Compilation of maximum permissible exposure to incoherent optical radiation
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GB/T 7249-1987
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Maximum lamp outlines for general lighting lamps
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GB/T 7249-2002
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The incandescent largest Dimension
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GB/T 7249-2008
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Maximum lamp outlines for incandescent lamps
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GB/T 7249-2016
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Maximum lamp outlines for incandescent lamps
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GB/T 7251.10-2014
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Low-voltage switchgear and controlgear assemblies -- Part 10: Guidance to specifying assemblies
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GB/T 7251.7-2015
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Low-voltage switchgear and controlgear assemblies -- Part 7: Assemblies for specific applications such as marinas, camping sites, market squares, electric vehicles charging stations
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GB/T 7251.8-2005
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Low-voltage switchgear and controlgear assemblies -- General technology requirement for intelligent assemblies
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GB/T 7251-1987
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Low-voltage switchgear assembly
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GB/T 725-1991
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Internal combustion engines. Nomenclature and code of designations
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GB/T 725-2008
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Internal combustion engines -- Nomenclature and code of designations
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GB/T 7252-1987
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Guide for the analysis and the diagnosis of gases dissolved in transformer oil
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GB/T 7252-2001
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Guide to the analysis and the diagnosis of gases dissolved in transformer oil
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GB/T 7253-1987
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The string insulator units of the cap and pin type--Dimensions and characteristics
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GB/T 7253-2005
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Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic or glass insulator units for a.c. systems - Characteristics of insulator units of the cap and pin type
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GB/T 7254-1995
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Performance and test methods of the second order digital multiplex equipment operating at 8448 kbit/s and using positive justification
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GB/T 7255-1998
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Single sideband power-line carrier terminals
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GB/T 7256-2005
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The civilian airport lighting general requirements
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GB/T 7256-2015
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General requirements of lighting fixtures for civil airport
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GB/T 7257-1987
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Measurement methods of parameter for helium neon laser
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GB/T 7257-2013
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Measurement methods of parameter for helium-neon laser
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GB/T 7259-1987
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Guidelines for presenting performance of analog process measurement and control instrument
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GB/T 1114.2-1998
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Shell end mills. Part 2: Tachnical specifications
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GB/T 7260-1987
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Uninterruptible power systems
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GB/T 7261-1987
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Basic testing method of relay and protective equipment
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GB/T 7261-2000
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Basic testing method for relay and equipment
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GB/T 7261-2008
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Basic testing method for relaying protection and security automatic equipment
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GB/T 7261-2016
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Basic testing method for relaying protection and security automatic equipment
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GB/T 726-1994
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Reciprocating internal combustion engines. Designation of the direction of rotation and of cylinders and valves in cylinder heads and definition of right-hand and left-hand in line engines and locations on an engine
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GB/T 7262.1-1993
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Technical requirements and arrangement of equipmentfor highway communcation
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GB/T 7262.2-1991
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Technical requirements and arrangement of equipment for highway communication--Arrangement of equipment
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GB/T 7262.2-2001
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The road communication technology requirements and equipment with devices equipped with
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GB/T 7262.3-1991
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Technical requirement and arrangement of equipment for highway communication--Technical requirement of network
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GB/T 7262.3-2001
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Technical requirements and arrangement of equipment for highway communication -- Technical requirement of network
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GB/T 7262-2009
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Technical requirements and equipment arrangement for highway communication
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GB/T 7264-1987
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Methods of measurement on projection receivers for television broadcast transmissions
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GB/T 7265.1-1987
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Test method for complex permittivity of solid dielectric materials at microwave frequencies. Perturbation method
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GB/T 7265.2-1987
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Test method for the complex permittivity of solid dielectric materials at microwave frequencies. Open cavity method
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GB/T 7266-1987
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Basic dimensions of electrical console for secondary circuit of power system
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GB/T 7267-1987
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Series of basic dimensions of control and protective panels and cabinet for secondary circuit of power system
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GB/T 7267-2003
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Basic dimensions of the secondary circuit of the power system control and protection panels and cabinet series
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GB/T 7267-2015
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Series of basic dimension of protective and control panels and cabinet for secondary circuit of power system
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GB/T 7268-1987
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Series of basic dimensions of subracks and associated panels of plug-in units for control and protective equipment of secondary circuit of power system
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GB/T 7268-2005
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The secondary circuit of the power system control and protection devices sub-racks and plug-in panel size
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GB/T 7268-2015
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Series of basic dimensions of sub-racks and associated plug-in units panels for protection and automation equipment of power system
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GB/T 7269-1987
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Arrangement, types and basic dimensions for electronic equipment consoles
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GB/T 7269-2008
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Arrangement, types and basic dimensions of consoles for electronic equipment
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GB/T 7270-1987
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Methods of measurement for photomultiplier tubes
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GB/T 7271-1987
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Methods of measurement for phototubes
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GB/T 727-1985
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Denomination for turbochargers and code of identification symbols
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GB/T 727-2003
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Turbocharger nomenclature and code
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GB/T 7274-1987
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Methods for the measurement of direct interelectrode capacitances of electronic tubes and valves
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GB/T 7274-2015
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Methods for the measurement of direct inter-electrode capacitances of electronic tubes and valves
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GB/T 7276-1987
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Hinges general technical condition
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GB/T 728-1998
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Ingot tin
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GB/T 728-2010
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Ingot tin
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GB/T 7284-1987
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Wooden framed case
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GB/T 7284-1998
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Wooden framed case
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GB/T 7284-2016
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Wooden framed case
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GB/T 7285-1993
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Packaging terms. Wooden containers
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GB/T 7286.1-1987
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Test Method for total normal emittance of metals and nonmetallic materials
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GB/T 7286.2-1987
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Test method for normal spectral emittance of metals and nonmetallic materials
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GB/T 7287.10-1987
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Measuring method for normal spectral emittance of infrared heater
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GB/T 7287.11-1987
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Test method for lifetime of infrared heater
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GB/T 7287.1-1987
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Detecting method for size, shape and exterior of infrared heater
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GB/T 7287.12-1987
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Test method for vibration of infrared heater
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GB/T 7287.2-1987
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Measuring method for the surface temperature distribution of infrared heater
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GB/T 7287.3-1987
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Measuring method for the radio between radiant surface and rear surface of infrared heater
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GB/T 7287.4-1987
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Measuring method for temperature rise time and fall time of infrared heater
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GB/T 7287.5-1987
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Testing method for bearing cold and hot alternating change of infrared heater
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GB/T 7287.6-1987
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Measuring method for insulation resistance of infrared heater
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GB/T 7287.7-1987
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Measuring method for electric-to-radiant power transfer efficiency of infrared heater
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GB/T 7287.8-1987
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Measuring method for power deviation rate of infrared heater
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GB/T 7287.9-1987
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Measuring method for normal total emittance of infrared heater
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GB/T 10913-1989
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Earth-moving machinery--Determination of ground speed
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GB/T 7288.1-1987
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Equipment reliability testing. Preferred test conditions. Indoor portable equipment. Low degree of simulation
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GB/T 7288.2-1987
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Equipment reliability testing. Preferred test conditions. Equipment for stationary use in weather protected locations. High degree of simulation
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GB/T 7289-1987
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Presentation of reliability, maintainability and availability predictions
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