| Standard No. |
Title |
Price(USD) |
Delivery |
Status |
Add To Cart |
| JJG (电子) 12037-1991 |
|
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| JJG 2037-2004 |
Verification Scheme of Measuring Instruments for Air Borne Acoustics Pressure |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| 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 |
|
via email in
1-3 business day
|
ABOLISHED
|
please email coc@codeofchina.com for quotation
|
| GB/T 4760-1995 |
Acoustics－Measurement procedure for silencers |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 16955-1997 |
Acoustics--Tractors and machinery for agriculture and forestry--Measurement of noise at the operators position-Survey method |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| JJF 1271-1990 |
O.T.N. of Primary Standard for electroacoustical free-field Acoustical Pressure |
 (USD) |
via email in
1 business day
|
VALID
|
|
| GB/T 7341.2-1998 |
Audiometers-Part 2 :Equipment for speech audiometry |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| JJF 1191-2008 |
Calibration Specification for Acoustic Performance of Audiometry Rooms |
 (USD) |
via email in
1-3 business day
|
ABOLISHED
|
|
| JJF 1280-1990 |
O.T.N. of the Primary Standard for Audiometric Zero Level of Air Conduction |
 (USD) |
via email in
1 business day
|
VALID
|
|
| GB/T 20430-2006 |
Acoustics―Noise control design procedures for open plant |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| JJF 1157-2006 |
Calibration Specification for Measuring Amplifiers |
 (USD) |
via email in
1-5 business day
|
VALID
|
|
| JJG(铁道)130-2003 |
Ultrasonic Flaw Detector for Rail |
 (USD) |
via email in
1 business day
|
ABOLISHED
|
|
| GB/T 21231.2-2018 |
Acoustics—Measurement of airborne noise emitted andstructure-borne vibration induced by small air-moving devices—Part 2:Structure-borne vibration measurements |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| JJG (电子) 04053-1995 |
Verification Regulation of QO3 Type Noise Figure Metering Device |
 (USD) |
via email in
1 business day
|
VALID
|
|
| JJF 1270-1990 |
O.T.N of the Secondary Standard for Coupler Reciprocity Method Acoustical Pressure |
 (USD) |
via email in
1 business day
|
VALID
|
|
| GB/T 18696.1-2004 |
Acoustics—Determination of sound absorption coefficient and impedance in impedance tubes—Part 1:Method using standing wave ratio |
|
via email in
1-3 business day
|
VALID
|
please email coc@codeofchina.com for quotation
|
| JJF 1278-1990 |
O.T.N. of Primary Standard for Milliwatt Level Ultrasonic Power |
 (USD) |
via email in
1 business day
|
VALID
|
|
| JJG 980-2003 |
Verification Regulation of Personal Sound Exposure Meters |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
| JJG (船舶) 5-1991 |
|
|
via email in
|
VALID
|
please email coc@codeofchina.com for quotation
|
| GB/T 4963-2007 |
Acoustics—Normal equal-loudness-level contours |
 (USD) |
via email in
1-3 business day
|
VALID
|
|
|
|
