QCT 29079-92标准（英文版）

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1、.InternalstandardAutomobileIndustryStandardofthePeople'sRepublicofChinaQualitygradingofthehydraulicbrakehoseassembliesusedonthevehiclesusingnon-petroleumbasebrakefluidQC/T29079-921.SubjectcontentandscopeofapplicationThisstandardspecifiesqualitygrades,testproceduresandsamplingevaluationmeth

2、odforthehydraulicbrakehose(insidediameter:3.2mm)assembliesusedonthevehiclesusingnon-petroleumbasebrakefluid.Itcanalsobereferencedforthebrakehoseassemblieswithinsidediametersof4.8mmand6.3mmrespectively.Thisstandardappliestosupervisionandgradingofproductqualityofthehydraulicbrakehoseassembli

3、esusedonthevehiclesusingnon-petroleumbasebrakefluidbythedepartmentsinchargeofenterprisesandproductmanufacturingenterprises.Thisstandarddoesnotapplytoinspectionandproductacceptanceduringregularproductionofenterprises.2.ReferencestandardsGB4784BrakeHoseAssembliesforHydraulicBrakingSystemsofM

4、otorVehiclesUsedwithaNon-PetroleumBaseHydraulicFluidsGB197GeneralPurposeScrewThreads-TolerancesandFitsZBT0400260°ThreadAngleSystemTaperThreadGB/T12707DirectivesfortheGradingofIndustrialProductQuality3QualitygradingprincipleAccordingtothequalitylevelsofthehydraulicbrakehoseassembliesusedont

5、hevehiclesusingnon-petroleumbasebrakefluid,theproductsaredividedintoqualityproduct,first-classproductandtop-classproduct.SeeArticle2ofGB/T12707forthespecificrequirements.4QualitygradingindexesSeeTable1forthequalitygradingindexes.5.TestproceduresSeeTable1forthetestprocedures.6Samplingevalua

6、tionmethod6.1SamplingprincipleEnabletoreflecttheactuallevelofproductqualityoftheenterpriseduringaperiodoftimetruly.6.2SamplingobjectsCAIECApprovalon14-4-1992implementmenton01-01-1993Conductfinishedproductinspectionbyrandomlysamplingamongthein-warehouseproductseligibleatthecustomerorthemanu

7、facturingplant(forrubberhoses,withinoneyearafterdelivered).Table1QualityGradingIndexesfortheHydraulicBrakeHoseAssembliesUsedOntheVehiclesUsingNon-PetroleumBaseBrakeFluidSNItemsortingInspectionitemQualitygradingindexTestprocedureNumberofsamplesInspectioncontent