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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "direct" GB Standards List:
  • Standard  Code GB Standard Title Standard Class Order
  • GB/T 35842-2018
  • Technical requirements for pre-insulated directly buried valve of urban heating direct
    China National Standards
  • GB/T 35941-2018
  • Aquaculture aerator directire rules direct
    China National Standards
  • GB/T 15623.1-2018
  • Hydraulic fluid power—Electrically modulated hydraulic control valves—Part 1: Test methods for four-port directional flow-control valves direct
    China National Standards
  • GB/T 35906-2018
  • Indirect ELISA to detect antibody against classical swine fever virus direct
    China National Standards
  • GB/T 35939-2018
  • Indirect enzyme linked immunosorbent assay for detecting the antibody against encephalomyocarditis virus direct
    China National Standards
  • GB/T 15623.2-2017
  • Hydraulic fluid power—Electrically modulated hydraulic control valves—Part 2: Test methods for three-port directional flow-control valves direct
    China National Standards
  • GB/T 34876-2017
  • Vacuum technology—Vacuum gauges—Evaluation of the uncertainties of results of calibrations by direct comparison with a reference gauge direct
    China National Standards
  • GB/T 21211-2017
  • Equivalent loading and superposition techniques—Indirect testing to determine temperature rise of rotating electrical machines direct
    China National Standards
  • GB/T 34740-2017
  • Diagnostic methods for animal rabies diagnosis with direct immunofluorescence assay direct
    China National Standards
  • GB/T 34865-2017
  • Capacitors for high voltage direct current transfer switches direct
    China National Standards
  • GB/T 34689-2017
  • Digital printing materials—Computer direct plate-making plate(CTP Plate)—Test of unit area mass of oxidation layer direct
    China National Standards
  • GB/T 34873-2017
  • Vacuum gauges—Calibration by direct comparison with a reference gauge direct
    China National Standards
  • GB/T 34611-2017
  • Rigid polyurethane spray polyethylene winding prefabricated directly buried insulating pipes direct
    China National Standards
  • GB/T 34568-2017
  • Iron ores for blast furnace and direct reduction feedstocks-Determination of bulk density direct
    China National Standards
  • GB/T 4104-2017
  • Determination of whiteness for zinc oxide produced by direct process direct
    China National Standards
  • GB/T 34641-2017
  • Non-destructive testing—Test method for determining image quality in direct thermal neutron radiographic examination direct
    China National Standards
  • GB/T 311.3-2017
  • Insulation co-ordination—Part 3: Procedures for high-voltage direct current (HVDC) converter stations direct
    China National Standards
  • GB/T 7676.5-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 5:Special requirements for phase meters, power factor meters and synchroscopes direct
    China National Standards
  • GB/T 7676.9-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 9:Recommended test methods direct
    China National Standards
  • GB/T 7676.1-2017
  • direct acting indicating analogue electrical measuring Instruments and their accessories—Part 1:Definitions and general requirements common to all parts direct
    China National Standards
  • GB/T 7676.2-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 2:Special requirements for ammeters and voltmeters direct
    China National Standards
  • GB/T 7676.4-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 4:Special requirements for frequency meters direct
    China National Standards
  • GB/T 7676.6-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 6:Special requirements for ohmmeters(impedance meters ) and conductance meters direct
    China National Standards
  • GB/T 7676.3-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 3:Special requirements for wattmeters and varmeters direct
    China National Standards
  • GB/T 7676.7-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 7:Special requirements for multi-function instruments direct
    China National Standards
  • GB/T 7676.8-2017
  • direct acting indicating analogue electrical measuring instruments and their accessories—Part 8:Special requirements for accessories direct
    China National Standards
  • GB/T 3780.17-2017
  • Carbon black—Part 17: Indirect determination of particle size—Reflectance method direct
    China National Standards
  • GB/T 34089-2017
  • Test parameters and test methods for VHF/UHF frequency band radio monitoring and direction finding system in OATS direct
    China National Standards
  • GB/T 20989-2017
  • Determination of power losses in high-voltage direct current (HVDC) converter stations direct
    China National Standards
  • GB/T 34118-2017
  • Terminology for voltage-sourced converters (VSC) for high voltage direct current (HVDC) systems direct
    China National Standards
  • GB/T 33983.1-2017
  • direct methanol fuel cell system—Part 1: Safty direct
    China National Standards
  • GB/T 22382-2017
  • direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above direct
    China National Standards
  • GB/T 33983.2-2017
  • direct methanol fuel cell system—Part 2:Performance test method direct
    China National Standards
  • GB/T 33708-2017
  • Static meter for direct current energy direct
    China National Standards
  • GB/T 33698-2017
  • Solar energy resources measurement—direct radiation direct
    China National Standards
  • GB/T 33677-2017
  • Classification of solar energy resources—direct radiation direct
    China National Standards
  • GB/T 33692-2017
  • Automatic solar tracker for direct radiation measurement direct
    China National Standards
  • GB/T 33551-2017
  • Portable small-type diesel engine-pumps direct-linking unit—Specification for performance evaluation direct
    China National Standards
  • GB/T 33552-2017
  • Small-size gasoline engine direct-link high speed centrifugal pumps—Specification for performance evaluation direct
    China National Standards
  • NB/T 51073-2017
  • (Coal Mine Construction Roadway Project direct Fees Estimation Quota) direct
    China Energy industry Standards
  • GB/T 35745-2017
  • Specifications for control and protection equipment of voltage source converter based high-voltage direct current (VSC-HVDC) transmission system direct
    China National Standards
  • GB/T 35252-2017
  • Animal and vegetable fats and oils―Determination of 2-thiobarbituric acid value―direct method direct
    China National Standards
  • GB/T 35711-2017
  • Analysis, restrain and measurement of harmonics of DC side of high voltage direct current (HVDC) transimission system direct
    China National Standards
  • GB/T 34139-2017
  • Technical specification of converters for high-voltage direct current (HVDC) transmission using voltage sourced converters (VSC) direct
    China National Standards
  • GB/T 35693-2017
  • Technical specification for valvehall fittings of ±800kV ultra high voltage direct current(UHVDC) transmission project direct
    China National Standards
  • GB/T 35703-2017
  • Specification of system design for high-voltage direct current (HVDC) transmission using voltage sourced converters (VSC) direct
    China National Standards
  • GB/T 25843-2017
  • Technical requirments of control and protection equipment of ±800 kV ultra high voltage direct current transmission direct
    China National Standards
  • GB/T 35702.1-2017
  • Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems—Part 1: General requirements direct
    China National Standards
  • GB/T 35692-2017
  • Guideline for system planning of high voltage direct current(HVDC) power transmission project direct
    China National Standards
  • GB/T 35702.2-2017
  • Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems—Part 2: Modular multilevel converters direct
    China National Standards
  • GB/T 35227-2017
  • Specifications for surface meteorological observation—Wind direction and wind speed direct
    China National Standards
  • GB/T 35402-2017
  • direct part mark (DPM) two dimensional bar code symbol quality test direct
    China National Standards
  • GB/T 13498-2017
  • Terminology for high-voltage direct current(HVDC) transmission direct
    China National Standards
  • GB/T 35207-2017
  • Electric excitation direct drive wind turbines direct
    China National Standards
  • GB/T 22638.6-2016
  • Test methods for aluminium and aluminium alloy foils—Part 6: Determination of direct current resistance direct
    China National Standards
  • GB/T 1408.2-2016
  • Insulating materials—Test methods for electric strength—Part 2: Additional requirements for tests using direct voltage direct
    China National Standards
  • GB/T 33348-2016
  • Voltage sourced converter valves for high-voltage direct current power transmission—Electrical testing direct
    China National Standards
  • DL/T 1670-2016
  • (Construction and Acceptance Standard of Exhaust Steam Pipeline for direct Air - cooling System in Thermal Power Plant) direct
    China Electricity & Power Standards
  • DL/T 1672-2016
  • (Aluminum indirect air - cooled tube bundle for thermal power plant) direct
    China Electricity & Power Standards
  • SY/T 5416.2-2016
  • (Measurement and inspection of measuring instruments for directional wells - Part 2: Electronic single - multipoint class) direct
    China Oil & Gas Industry Standards
  • SY/T 7348-2016
  • (Corrosion evaluation criteria for steel pipes and tanks - Part 4: direct evaluation of stress corrosion cracking of buried steel pipes) direct
    China Oil & Gas Industry Standards
  • SY/T 0087.4-2016
  • (Corrosion evaluation criteria for steel pipes and tanks - Part 4: direct evaluation of stress corrosion cracking of buried steel pipes) direct
    China Oil & Gas Industry Standards
  • GB/T 26949.7-2016
  • Industrial trucks—Verification of stability—Part 7: Bidirectional and multidirectional trucks direct
    China National Standards
  • NB/T 31103-2016
  • (Technical specification for main control system software functions of direct - drive permanent magnet wind turbines) direct
    China Energy industry Standards
  • CJJ/T 254-2016
  • (Technical Specification for Leakage Monitoring System of direct - buried Hot Water Pipeline for Urban Heating) direct
    China Urban Construction industry Standards
  • JT/T 1049.3-2016
  • Road transport administration management information system Part 3: Data resource directory service interface direct
    China Highway & Transportation Standards
  • JT/T 1064-2016
  • (Bridge damping multi-directional displacement comb telescopic device) direct
    China Highway & Transportation Standards
  • SJ/T 11642-2016
  • (direct broadcast satellite television broadcasting receiving planar antenna General specification) direct
    China Electronics Standards
  • HJ 789-2016
  • Water quality. Determination of Acetonitrile. direct injection /Gas chromatography direct
    China Environmental Protection Industry Standards
  • GB/T 32531-2016
  • Printing machinery—Violet laster digital direct plate setter direct
    China National Standards
  • GB/T 32524.1-2016
  • Acoustics—Determination of sound power level and directivity character of power capacitor unit using sound pressure—Part 1: Precision method for hemi-anechoic rooms direct
    China National Standards
  • GB/T 32524.2-2016
  • Acoustics—Determination of sound power level and directivity character of power capacitor using sound pressure—Part 2: Engineering methods for an essentially free field over a reflecting plane direct
    China National Standards
  • SY/T 5416.3-2016
  • Measurement and inspection of directional surveying instruments. Part3-Gyroscope direct
    China Oil & Gas Industry Standards
  • NB/T 12005-2016
  • (direct coal liquefaction residue analysis component solvent extraction method) direct
    China Energy industry Standards
  • SY/T 5416.1-2016
  • Measurement and inspection of directional surveying instruments. Part1-Measurement while drilling direct
    China Oil & Gas Industry Standards
  • GB/T 10322.7-2016
  • Iron ores and direct reduced iron—Determination of size distribution by sieving direct
    China National Standards
  • CJ/T 480-2015
  • Prefabricated directly buried composite insulating pipes with polyurethane (PUR) foamed-plastics and high density polyethylene (PE) casing pipes direct
    China Urban Construction industry Standards
  • NB/SH/T 0893-2015
  • Oil dispersion test at medium temperature for passenger car direct injection diesel engines direct
    China Energy industry Standards
  • GB/T 13161-2015
  • Radiation protection instrumentation—Measurement of personal dose equivalents Hp(10) and Hp(0,07) for X, gamma, neutron and beta radiations—direct reading personal dose equivalent meters direct
    China National Standards
  • GB/T 2543.1-2015
  • Textiles—Determination of twist in yarns—Part 1: direct counting method direct
    China National Standards
  • GB/T 4372.4-2015
  • Methods for chemical analysis of zincoxide produced by direct process—Part 4:Determination of cadmium oxide content—Flame atomic absorption spectrometry method direct
    China National Standards
  • GB/T 31948-2015
  • Chromium ores—Determination of mercury content— Solid sampling and direct mercury analysis method direct
    China National Standards
  • GB/T 4372.3-2015
  • Methods for chemical analysis of zincoxide produced by direct process—Part 3:Determination of copper oxide content—Flame atomic absorption spectrometry method direct
    China National Standards
  • GB/T 31949-2015
  • Manganese ores—Determination of mercury content—Solid sampling and direct mercury analysis method direct
    China National Standards
  • GB/T 31947-2015
  • Iron ores—Determination of mercury content—Solid sampling and direct mercury analysis method direct
    China National Standards
  • GB/T 7274-2015
  • Methods for the measurement of direct inter-electrode capacitances of electronic tubes and valves direct
    China National Standards
  • JR/T 0033-2015
  • (Insurance underlying data element directory) direct
    China Finance Standards
  • GB/T 31743-2015
  • Animal and vegetable fats and oils—Determination of solid fat content by pulsed NMR—direct method direct
    China National Standards
  • DL/T 1484-2015
  • Technical specification for direct current electricity meters direct
    China Electricity & Power Standards
  • GB/T 31529-2015
  • Digital printing materials—Computer direct plate-making plate(CTP Plate)—Test of unit area weight of photosensitive coating direct
    China National Standards
  • GB/T 31518.1-2015
  • direct-drive permanent magnet type wind turbine generator system—Part 1: Technical condition direct
    China National Standards
  • GB/T 31487.1-2015
  • direct current de-icing devices—Part 1: System design and application guide direct
    China National Standards
  • GB/T 31518.2-2015
  • direct-drive permanent magnet type wind turbine generator system—Part 2: Test method direct
    China National Standards
  • GB/T 31487.2-2015
  • direct current de-icing devices—Part 2:Thyristor valves direct
    China National Standards
  • GB/T 31487.3-2015
  • direct current de-icing devices—Part 3:Tests direct
    China National Standards
  • YD/T 2802-2015
  • (Built-in multi-directional single-fiber OTDR PON OLT optical module) direct
    China Telecommunication Standards
  • QB/T 4804-2015
  • Industrial sewing machine. Technical requirements for direct-driven bearing less servo motor direct
    China Light Industry Standards
  • DL/T 1428-2015
  • Acceptance guide for direct air-cooled system direct
    China Electricity & Power Standards
  • NB/T 33021-2015
  • Specification for electric vehicle off-board bi-directional charger direct
    China Energy industry Standards
  • SN/T 4116-2015
  • (Determination of photoelectric direct reading Xiqianhanliao tin, lead, antimony, bismuth, silver, copper, zinc, cadmium and arsenic emission spectrometry) direct
    China Import Export Inspection Standards

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