Announcement of Newly Approved National Standards of P. R. China

General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 220 national standards and publicize now.     

Announcement of Newly Approved National Standards of P. R. China

2003No.14totalNo.62GeneralAdministrationofQualitySupervisionInspectionandQuarantineapprovedthefollowing219nationalstandardsandpublicizenow.2003-12-24NOStandardNumberTitleReplacedStandardUpdateDateExecuteDate1GB/T144-2003 Loginspection GB/T144-1995 2003-11-10 2004-05-01 2GB/T462-2003 Paperandboard-DeterminationofmoisturecontentGB/T462-19892003-10-202004-06-01 3GB/T606-2003 ChemicalreagentGeneralmethodforthedeterminationofwater (Karl Fischermethod)GB/T606-19882003-11-102004-05-0…     

Announcement of Newly Approved National Standards of P. R. China

2006 No.3 (total No.90) General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 113 national standards and publicize now.     

Announcement of Newly Approved National Standards of P. R. China

~~Announcement of Newly Approved National Standards of P. R. China     

Announcement of Newly Approved National Standards of P. R. China

General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 26 national standards and publicize now.     

Announcement of Newly Approved National Standards of P.R.China

~~Announcement of Newly Approved National Standards of P.R.China     

Announcement of Newly Approved National Standards of P.R.China

~~     

Announcement of Newly Approved National Standards of P.R.China

Greneral Administration of Quality Supervision, Inspection and Quarantine and Standardization Administration of China approved the following 16 national standards and publicize now.     

Effects of Hydrostatic Stress on the A.C.Permeability of Mn-Zn Ferrite

Soft ferrites have excellent a.c.permeability,but it is reduced under stress.It has a hyperbolic re-lationship between permeability μ and stress σ or alinear increase of 1/μ with σ.It is also found thatthe stress sensitive factor α depends on sampleporosity p.For fully densified Mn-Zn ferrites α isonly 10~(-7)～10~(-8) MPa~(-1),but it increases to 6×10~(-6) MPa~(-1) for samples containing closed porosity6%.Such materials could be used as a sensor formeasuring pressure。     

Announcement of Newly Approved National Standards of P. R. China 2004 No.5 (total No.67)

GeneralAdministrationofQualitySupervisionInspectionandQuarantineandStandardizationAdministrationofChinaapprovedthefollowing83nationalstandardsand33referencematerialsandpublicizenow.NOStandardNumberTitleReplacedStandardUpdateDateExecuteDate1GB/T230.1-2004MetallicRockwellhardnesstest-Part1:Testmethod(scalesA、B、C、D、E、F、G、H、K、N、T)GB/T230-1991GB/T1818-19942004-05-092004-10-012GB/T1593.4-2004Agriculturalwheeledtractors-RearmountedThree-pointlinkage-Part4:category0GB/T15…     

Announcement of Newly Approved National Standards of P.R.China 2004 No.6(total No.68)

GeneralAdministrationofQualitySupervision熏InspectionandQuarantineandStandardizationAdministrationofChinaapprovedthefollowing113nationalstandardsandpublicizenow.NO StandardNumberTitle ReplacedStandard UpdateDate ExecuteDate 1GB 1985-2004High-voltage alternating-current disconnectors and earthing switchesGB 1985-1989GB/T 13601-19922004-05-142005-02-01 2GB/T 2893.1-2004Graphical symbols-Safety colours and safety signs-Part 1:Design prin ciples for safety signs in workplaces and publi…     

Announcement of Newly Approved National Standards of P.R.China 2004 No.8(total No.70)

NO StandardNumberTitle ReplacedStandard UpdateDate ExecuteDate 1GB 4066.1-2004Fire extinguishing media-Part1:BC powderGB 4066-19942004-08-052005-02-01 2GB 4066.2-2004Fire extinguishing media-Part 2:ABC powderGB 15060-2002,GB 13532-19922004-08-052005-02-01 3GB/T 4774-2004Terminology of separating machineGB/T 4774-19842004-06-092004-12-01 4GB/T 5661-2004End-suction centrifugal pumps-Dimensions of cavities for mechanical seals and for soft packingGB/T 5661-19852004-06-092004-12-01…     

Announcement of Newly Approved National Standards of P. R. China 2005 No.1(total No.75)

General Administration of Quality Supervision, Inspection and Quarantine and Standardization Administration of China approved the following 26 national standards and publicize now. 2005-01-31