Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 21232-2007 Acoustics - Guidelines for noise control in offices and workrooms by means of acoustical screens 270.0 via email in 1~3 business day valid
JJG 992-2004 Verification Regulation of the Measurement Instruments of Sound Intensity 360.0 via email in 1~3 business day valid
GB/Z 27764-2011 Acoustics - Determination of sound transmission loss in impedance tubes - Transfer matrix method 450.0 via email in 1~3 business day valid
GB/T 15951-1995 Mechanical coupler for measurements on bone vibrators 165.0 via email in 1~3 business day valid
JJG (电子) 12037-1991 DF-5990A Type Loudspeaker Resonance Frequency Gauge (Trial Implementation) 75.0 via email in 1~3 business day valid
JJF 1275-1990 ~ 45.0 via email in 1~3 business day valid
GB/T 4854.5-2008 Acoustics - Reference zero for the calibration of audiometric equipment- Part 5: Reference equivalent threshold sound pressure levels for pure tone in the frequency range 8 kHz to 16 120.0 via email in 1~3 business day valid
GB/T 17252-1998 Acoustics - Characteristics and measurements of ultrasonic piezoelectric transducers up to 100 kHz 150.0 via email in 1~3 business day valid
GB/T 1988 9.8-2006 GB/T 1988 9.8-2006 Acoustics - Measurement of sound insulation in buildings and of building elements - Part 8 : Laboratory measurements of the reduction of transmitted impact noise by floor coverings via email in 1~3 business day valid
JJG (电子) 04053-1995 225.0 via email in 1~3 business day valid
JJF 1191-2008 Calibration Specification for Acoustic Performance of Audiometry Rooms 360.0 via email in 1~5 business day valid
JJG 746-2004 Verification Regulation for Ultrasonic Flaw Detectors 225.0 via email in 1~3 business day valid
GB/T 1988 9.4-2005 GB/T 1988 9.4-2005 Acoustics - Measurements of sound insulation in buildings and of building elements - Part 4: Field measurements of airborne sound insulation between rooms 300.0 via email in 1~3 business day valid
GB/T 21231-2007 Acoustics - Method for the measurement of airborne noise emitted by small air-moving devices 360.0 via email in 1~3 business day valid
GB/T 17248.5-1999 Acoustics--Noise emitted by machinery and equipment--Measurement of emission sound pressure levels at a work station and at other specified positions--Method requiring environmental corrections 300.0 via email in 1~3 business day valid
JJG 277-1998 Verification Regulation of Reference Sound Source 180.0 via email in 1~3 business day valid
GB/T 3767-2016 930.0 via email in 1~10 business day valid
GB/T 15173-1994 Sound calibrators 90.0 via email in 1~3 business day abolished
GB/T 14369-2011 Acoustics—Measurement methods of insertion loss,echo reduction and sound absorption coefficient for underwater acoustical material samples 270.0 via email in 1~3 business day valid
GB/T 25498.3-2010 Electroacoustics - Simulators of human head and ear - Part 3: Acoustic coupler for the calibration of supra-aural earphones used in audiometry 180.0 via email in 1~3 business day valid
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