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GB 713-1997 steel plates for boilers.pdf

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GB 713-1997 steel plates for boilers.pdf

ApprovedbyChinaStateBureauofQualityandTechnicalSupervisiononNovember11th1997EffectiveonMay1st1998Page1of10NationalStandardsofthePeoplesRepublicofChinaGB7131997SubstituteforGB71386SteelPlatesforBoilers1ScopeThisstandardspecifiesthedimension,shape,technicalrequirements,testmethod,inspectionrules,packaging,markingandqualitycertificateofsteelplatesforboilers.Thestandardisapplicableforthemanufactureofsteelplateshavingathicknessof6mm150mmusedforvariousboilersandaccessories.2NormativeReferencesThefollowingstandardscontainprovisionswhich,throughreferenceinthistext,constituteprovisionsofGB7131997.Atthetimeofpublication,alleditionsindicatedwerevalid.Asallstandardsaresubjecttorevision,andthepartiestoagreementsbasedonGB7131997areencouragedtoinvestigatethepossibilityofapplyingthemostrecenteditionsofthestandardsindicatedbelow.GB22284MethodofsamplingsteelforthedeterminationofchemicalcompositionandpermissiblevariationsforproductanalysisGB223.388Methodsforchemicalanalysisofiron,steelandalloyGravimetricMethodofdiantipyrylmethanephosphomolybdateforthedeterminationofphosphoruscontentGB223.488Methodsforchemicalanalysisofiron,steelandalloyThevolumetricmethodforthedeterminationofmanganesecontentbyammoniumnitrateoxidationGB/T223.1191Methodsforchemicalanalysisofiron,steelandalloyTheammoniumpersulfateoxidationvolumetricmethodforthedeterminationofchromiumcontentGB223.1489Methodsforchemicalanalysisofiron,steelandalloyTheNbenzoylNphenylhydroxylamineextractionphotometricmethodforthedeterminationofvanadiumcontentGB/T223.1691Methodsforchemicalanalysisofiron,steelandalloyThechromotropicacidphotometricmethodforthedeterminationoftitaniumcontentGB223.1789Methodsforchemicalanalysisofiron,steelandalloyThediantipyrylmethanephotometricmethodforthedeterminationoftitaniumcontentGB/T223.1894Methodsforchemicalanalysisofiron,steelandalloyThesodiumthiosulfateseparationiodimetricmethodforthedeterminationofcuppercontentGB223.1989Methodsforchemicalanalysisofiron,steelandalloyTheGB7371997Page2of10neocuproinechloroformextractionphotometricmethodforthedeterminationofcoppercontentGB/T223.2394Methodsforchemicalanalysisofiron,steelandalloyThedimethylglyoximespectrophotometricmethodforthedeterminationofnickelcontentGB/T223.2494Methodsforchemicalanalysisofiron,steelandalloyTheextractionseperationThedimethylglyoximespectrophotometricmethodforthedeterminationofnickelcontentGB223.2689Methodsforchemicalanalysisofiron,steelandalloyThethiocyanatedirectphotometricmethodforthedeterminationofmolybdenumcontentGB223.2784Methodsforchemicalanalysisofiron,steelandalloyThethiocyanatebutylacetateextractionspectrophotometricmethodforthedeterminationofmolybdenumcontentGB223.3685Methodsforchemicalanalysisofiron,steelandalloyTheThevolumetricmethodforthedeterminationofnitrogencontentafterdistillationseparationGB223.3789Methodsforchemicalanalysisofiron,steelandalloyTheindophenolbluephotometricmethodsforthedeterminationofnitrogencontentafterdistillationseparationGB223.3985Methodsforchemicalanalysisofiron,steelandalloysulphochlorophenolSphotometricmethodforthedeterminationofniobiumcontentGB223.4085Methodsforchemicalanalysisofiron,steelandalloyTheanionexchangeseparationsulphochlorophenolSphotometricmethodforthedeterminationofniobiumcontentGB223.5487Methodsforchemicalanalysisofiron,steelandalloyTheflameatomicabsorptionspectrophotometricmethodforthedeterminationofnickelcontentGB223.5887Methodsforchemicalanalysisofiron,steelandalloyThesodiumarsenitesodiumnitritetitrimetricmethodforthedeterminationofmanganesecontentGB223.5987Methodsforchemicalanalysisofiron,steelandalloyThereducedmolybdoantimonylphosphoricacidphotometricmethodforthedeterminationofphosphoruscontentGB223.6087Methodsforchemicalanalysisofiron,steelandalloyTheperchloricaciddehydrationgravimetricmethodforthedeterminationofsiliconcontentGB223.6187Methodsforchemicalanalysisofiron,steelandalloyTheammoniumphosphomolybdatevolumetricmethodforthedeterminationofphosphoruscontentGB223.6287Methodsforchemicalanalysisofiron,steelandalloyThebutylacetateextractionphotometricmethodforthedeterminationofphosphoruscontentGB223.6388Methodsforchemicalanalysisofiron,steelandalloyThesodiumpotassiumperiodatephotometricmethodforthedeterminationofmanganesecontentGB7371997Page3of10GB223.6488Methodsforchemicalanalysisofiron,steelandalloyTheflameatomicabsorptionspectrometricmethodforthedeterminationofmanganesecontentGB223.6789Methodsforchemicalanalysisofiron,steelandalloyThereducingdistillationmethylenebluephotometricmethodforthedeterminationofsulfurcontentGB223.6889Methodsforchemicalanalysisofiron,steelandalloyThepotassiumiodatetitrationmethodaftercombustionforthedeterminationofsulfurcontentGB223.6989Methodsforchemicalanalysisofiron,steelandalloyThegasvolumetricmethodaftercombustionforthedeterminationofcarboncontentGB/T223.7191Methodsforchemicalanalysisofiron,steelandalloyThegravimetricmethodaftercombustionforthedeterminationofcarboncontentGB/T223.7291Methodsforchemicalanalysisofiron,steelandalloyThealuminachromatographicseparationbariumsulfategravimetricmethodforthedeterminationofsulphurcontentGB/T223.7491Methodsforchemicalanalysisofiron,steelandalloyThecombustiongravimetric/gasvolumetricmethodforthedeterminationofcombinedcarboncontentGB/T223.7694Methodsforchemicalanalysisiron,steelandalloyTheflameatomicabsorptionspertrometricmethodforthedeterminationofvanadiumcontentGB22887MetallicmaterialsTensiletestingGB/T22994MetallicmaterialsCharpynotchimpacttestGB23282MetallicmaterialsBendtestGB24788Generalruleofacceptance,package,markandcertificationforsteelplatessheetsandstripsGB70988Dimensions,shape,weightandtolerancesforhotrolledplatesandsheetsGB/T297091ThickersteelplatesMethodforultrasonicinspectionGB297684SteelstrainageingsensibilitytestGB433884MetallicmaterialsTensiletestingatelevatedtemperatureGB531385SteelplatewiththroughthicknesscharacteristicsGB639786MetallicmaterialsTestpiecesfortensiletesting3Dimension,ShapeandPermissibleDeviations3.1Thedimension,shapeandpermissibledeviationsofsteelplates,excludingthepermissibledeviationsofthickness,shallbeinaccordancewithrelevantprovisionsinGB709.3.2ThethicknessdeviationofsteelplatesshallbeinaccordancewiththeprovisionssetforthinTable1.IfrequestedbythepurchaserandbyagreementbetweentheGB7371997Page4of10purchaserandthemanufacturer,thesteelplateswiththethicknessnotmorethan210mmcanbesupplied.3.3Thesteelplatescanbedeliveredonthebasisofmeasuredweightortheoreticalweight.Incaseofdeliverybasedontheoreticalweight,forcalculationofwhich,thetheoreticalthicknessshallapplythenominalthicknessofthesteelplateplusadditionalvaluelistedinTable2.4TechnicalRequirements4.1GradeandChemicalComposition4.1.1ThegradeandchemicalcompositionheatanalysisforsteelsshallbeinaccordancewiththeprovisionssetforthinTable3.4.1.1.1Intheeventthatthesteelplatewith20gmeetstherequirementsofproperties,thelowerlimitforthecontentofmanganesecanbe0.40forthicknessgreaterthan25mm,thecarboncontentofthesteelplatecanbeupto0.22.4.1.1.2Inordertoimprovethepropertyofthesteelplate,itispermissibletoaddalloymicroelementstothesteelandthecontentsoftheelementsshallbefilledintheQualityAssurance.Thecontentofmanganesefor16Mngshallfallbelowtheminimumpermittedvalueof1.70.4.1.1.3Fortheanalyzedresidualelementsinthesteel,thecontentsofCr,Ni,Cushallnotbemorethan0.30,thecontentofMonotmorethan0.10,thecontentofVnotmorethan0.010andthetotalcontentofCr,Ni,Cu,Mo,Vnotmorethan0.70.Incasethemanufacturercanassurethecomplianceofsuch,theanalysiscanbeexempted.4.1.2ThepermissibledeviationsofchemicalcompositionforfinishedsteelplatesshallbeinconformitywiththeprovisionssetforthinGB222.4.2SmeltingProcessThesteelsaresmeltedinopenhearthfurnace,oxygenconverterorelectricfurnace.Forthesteelplatein15CrMog,12Cr1MoVgandotherswiththethicknessgreaterthan60mm,thesteelsshallbesubjectedtosecondaryrefining.4.3DeliveryConditionsThesteelplatesshallbedeliveredinthehotrolled,controlledrolled,normalizedornormalizedplustemperedconditions.4.4MechanicalandTechnologicalProperties4.4.1ThemechanicalandtechnologicalpropertiesofsteelplatesshallbeinaccordancewiththeprovisionsassetforthinTable4.Incasethesteelplates22Mng,15CrMog,13MnNiCrMoNbgand12Cr1MoVgaredeliveredwithoutbeingheattreated,thetestpiecemustbesubjecttotreatmentbynormalizingandtemperinganditspropertymustcomplywiththeprovisionsassetforthinTable4.

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