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1NationalStandardofthePeoplesRepublicofChinaGB/T3639-2009ReplaceGB/T3639-2000Cold-drawnorcold-rolledprecisionseamlesssteeltubesIssuedate:2009.10.30Implementationdate:2010.05.01IssuedbyGeneralAdministrationofQualitySupervision,InspectionandQuarantineofthePeoplesRepublicofChina;IssuedbyStandardizationAdministrationofthePeoplesRepublicofChina.2ForewordThisnationalstandardismodifiedinrelationtoEN10305-1:2002(Steeltubesforprecisionapplications-Technicaldeliveryconditionspart1:Seamlesscolddrawntubes)(Englishversion).Thisstandardwasre-draftedbyEN10305-1:2002,alistisgiveninannexAaboutthechapterandsectionnumbercomparedwithEN10305-1:2002.ThisstandardmadesomechangestheadoptionofEN10305-1:2002.Thetechnicaldifferenceshavebeenincorporatedinthebodyandinvolveditemsaresignedwithsinglelineinmargin.AlistisgivenforreferenceinannexBaboutthesetechnicaldifferencesandcauses.Foreasytouse,thisstandardhasmadethefollowingeditorialchangesforEN10305-1:2002.a)“thisstandard”replace“theEuropeanstandard”;b)Thedecimalpoint“.”replace“,”;c)RemovedtheforewordofEN10305-1:2002,increasingthisstandardforeword.ThisstandardreplacesGB/T3639-2000.ComparedwithGB/T3639-2000,themainchangesareasfollows:-modifiedtheclassificationandcodename;-increasedordercontent;-modifiedbendingsteel;-removedtheexampleofmark;-increasedthebrandofthesteel;-modifiedthesmeltingprocessofthesteel;-removedthemanufacturingmethodsofthetubeblank;-modifiedthemechanicalpropertyofthetubeblank;-increasedtheflatteningtest;-increasedDriftexpandingtest;-increasedmagneticfluxleakagetesting;-increasedannexA,annexB,annexC,annexD.AnnexA,B,C,Dofthisstandardareinformativeannexes.ThisstandardisproposedbytheChinaIronandSteelAssociation.ThisstandardisstandardizedbytheNationalSteelTechnicalCommittee.Responsiblefordraftingthestandardunit:BaoshanIron&SteelCo.,Ltd.Unitparticipatedinthedraftingofthisstandard:JiangSuFengliPrecisionTubeCo.,Ltd.,JiangyinJiedaShapedTubeCo.,Ltd.Maindraftersofthisstandard:YuqingLuo,YaofeiZhang,CailingLiu,YuemingWu,JianliangXue,WeichiChen.Thisstandardreplacedthepreviouslyissuedstandardis:-GB/T3639-1983,GB/T3639-2000.3Cold-drawnorcold-rolledprecisionseamlesssteeltubes1ScopeThisstandardspecifiesclassification,codename,dimension,shape,weight,permissibletolerances,technicalrequirement,testmethod,testrules,packaging,markingandqualitycertificateofCold-drawnorcold-rolledprecisionseamlesssteeltubes.Thisstandardisapplicabletomanufacturingmechanicalstructure,2NormativeReferencesThefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofthisstandard.Fordatedreference,subsequentamendmentsto,orrevisionsof,anyofthesepublicationsdonotapply.However,partieshavingreachedanagreementbasedoncitedstandardswithadateareencouragedtostudywhetherthelatestversionsoftheciteddocumentswithadateareapplicable.Forundatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.GB/T222PermissibleTolerancesforChemicalCompositionofSteelProductsGB/T223.5Steelandiron-Determinationofacid-solublesiliconandtotalsiliconcontentReducedmolybdosilicatespectrophotometricmethod(GB/T223.5-2008,ISO4829-1:1986,ISO4829-2:1988,MOD)GB/T223.12Methodsforchemicalanalysisofiron,steelandalloy-Thesodiumcarbonateseparation-diphenylcarbazidephotometricmethodforthedeterminationofchromiumcontentGB/T223.23Methodsforchemicalanalysisofiron,steelandalloy-thedimethylglyoximespectrophotometricmethodforthedeterminationofnickelcontentGB/T223.26steelandalloy,determinationofmolybdenumcontent,thiocyanatespectrophotometric.GB/T223.53Methodsforchemicalanalysisofiron,steelandalloy-theflameatomicabsorptionspectrophotometricmethodforthedeterminationofcoppercontentGB/T223.59Methodsforchemicalanalysisofiron,steelandalloy-thereducedmolybdoantimonylphosphoricacidphotometricmethodforthedeterminationofphosphoruscontentGB/T223.63Methodsforchemicalanalysisofiron,steelandalloy-Thesodium(potassium)periodatephotometricmethodforthedeterminationofmanganesecontentGB/T223.68Methodsforchemicalanalysisofiron,steelandalloy-thepotassiumiodatetitrationmethodaftercombustioninthepipefurnaceforthedeterminationofsulfurcontentGB/T223.69Methodsforchemicalanalysisofiron,steelandalloy-Thegas-volumetricmethodaftercombustioninthepipefurnaceforthedeterminationofcarboncontentGB/T228Metallicmaterials-Tensiletestingatambienttemperature(GB/T228-2002,ISO6892:1998,EQV)GB/T242Metallicmaterials-Tube-Driftexpandingtest(GB/T242-2007,ISO8493:1998,IDT)GB/T246Metalmaterials-Tube-Flatteningtest(GB/T246-2007,ISO8492:1998,IDT)GB/T699CarbonconstructionalqualitysteelGB/T1031SurfaceroughnessparametersandtheirvaluesGB/T1591HighstrengthlowalloystructuralsteelsGB/T2102Acceptancepackingmarkingandqualitycertificationofsteelpipe4GB/T4336Standardtestmethodforsparkdischargeatomicemissionspectrometricanalysisofcarbonandlow-Alloysteel(routinemethod)GB/T7735-2204Steeltubes-Theinspectionmethodoneddycurrenttest(GB/T7735-2004,ISO9304:1989,MOD)GB/T12606Steeltubes-Thetestingmethodofmagneticfluxleakage(GB/T12606-1999,eqvISO9402:1989,ISO9598:1989)GB/T17395Seamlesssteeltubediamonsion,shape,permissibletolerancesofheavyweight(GB/T13795-2008,ISO1127:1992,ISO4200:1991ISO5252:1991,NEQ)GB/T20066SteelandIronSamplingandpreparationofsamplesforthedeterminationofchemicalcomposition(GB/T20066-2006,ISO14284:1996,IDT)3Classification,CodenameThesteeltubesofthestandardaredividedintofivecategoriesaccordingtodeliverystatus.Theclassificationandcodenameis:a)Coldworking/Hardcondition:+Cb)Coldworking/Softcondition:+LC;c)Stressrelievingannealedcondition:+SR;d)Annealedcondition:+A;e)Normalizedcondition:+N.4ordercontentThefollowinginformationshallbesuppliedbythepurchaseratthetimeofenquiryandorder:a)Thestandardn
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