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GB 6654-1996 steel plates for pressure vessel.pdfGB 6654-1996 steel plates for pressure vessel.pdf -- 2 元

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ApprovedbyChinaStateBureauofQualityandTechnicalSupervisiononApril5th1997EffectiveonOctober1st1998Page1of14NationalStandardofthePeoplesRepublicofChinaGB66541996SubstituteforGB665486GB665586SteelPlatesforPressureVessels1ScopeThisstandardspecifiesthedimension,shape,technicalrequirements,testmethod,inspectionrules,packaging,markingandqualitycertificateofsteelplatesforpressurevessels.Thestandardisapplicableforthesteelplatehavingathicknessof6mm120mmusedforpressurepartsofthepressurevesselinintermediateandmoderatetemperatureservices.2NormativeReferencesThenormativereferencesareindicatedinAppendixA.3GradesRafterthegradegivenintheStandardisthefirstletterofpinyinforChinesecharacterRong,standingforpressurevessel.4Dimension,Shape,WeightandPermissibleDeviations4.1Thedimension,shapeandpermissibledeviationsofsteelplateshallbeinaccordancewithrelevantprovisionsinGB709.4.2ThethicknessdeviationsofsteelplateshallbeinaccordancewiththeprovisionssetforthinTable1.4.3Incasethesteelplatesaredeliveredonthebasisoftheoreticalweight,forcalculationofwhich,thetheoreticalthicknessshallemploytheadditionalvalueforthenominalthicknessofthesteelplateaslistedinTable2.GB66541996Page2of14Table1PermissibleDeviationsofThicknessmmNominalThicknessMinusDeviationWidth60075075010001000120012001500150017001700180018002000200023002300250025002600260028002800300030003200320034003400360036003800PositiveDeviation67.50.250.450.550.600.600.750.750.750.807.5100.750.750.850.850.900.900.901.001.151.151.1510130.750.750.850.850.950.950.951.051.251.251.251.5513250.750.750.850.951.151.351.351.551.651.7525300.850.850.951.051.251.451.551.651.751.8530340.951.051.051.151.351.551.651.751.952.0534401.151.251.351.451.551.751.851.952.152.2540501.351.451.551.651.751.952.052.152.352.4550601.651.751.851.952.052.152.152.252.352.5560802.552.552.552.552.652.752.852.852.852.852.952.95801002.952.952.952.953.053.053.053.153.153.153.153.151001203.253.253.253.353.453.453.553.553.553.553.553.55GB66541996Page3of14Table2AdditionalValueforThicknessmmNominalThicknessWidth60075075010001000120012001500150017001700180018002000200023002300250025002600260028002800300030003200320034003400360036003800ThicknessAdditionalValueforcalculationofweight67.50.100.150.180.180.250.250.250.287.5100.250.250.300.300.320.320.320.380.450.450.4510130.250.250.300.300.350.350.350.400.500.500.500.6513250.250.250.300.350.450.550.550.650.700.7525300.300.300.350.400.500.600.650.700.750.8030340.350.400.400.450.550.650.700.750.850.9034400.450.500.550.600.650.750.800.850.951.0040500.550.600.650.700.750.850.900.951.051.1050600.700.750.800.850.900.950.951.001.051.1560801.151.151.151.151.201.251.301.301.301.301.351.35801001.351.351.351.351.401.401.401.451.451.451.451.451001201.501.501.501.601.601.651.651.651.651.651.651.65GB66541996Page4of145TechnicalRequirements5.1GradeandChemicalComposition5.1.1ThegradeandchemicalcompositionheatanalysisforsteelsshallbeinaccordancewithprovisionssetforthinTable3.Table3ChemicalCompositionGradeChemicalComposition,m/mCMnSiVMoNbNCrNiSPNotmorethan20R”0.200.400.900.150.300.0200.03016MnR”0.201.201.600.200.550.0200.03015MnVR”0.181.201.600.200.550.040.120.0200.03015MnVNR”0.201.301.700.200.550.100.200.0100.0200.0200.03018MnMoNbR”0.221.201.600.150.500.450.650.0250.0500.0200.02513MnNiMoNbR”0.151.201.600.150.500.200.400.0050.0200.200.400.601.000.0200.02515CrMoR0.120.180.400.700.150.400.450.600.801.200.0200.0305.1.1.1Forthesteelplatewiththicknessgreaterthan60mm,theupperlimitofthecontentofmanganeseof20Rcanbeincreasedto1.00.5.1.1.2WhenCr,MoandCuareregardedasresidualelements,itsrespectivecontentshallnotbemorethan0.30andthetotalcontentshallnotbemorethan0.60.Incasethemanufacturercanassurethecomplianceofsuch,theanalysiscanbeexempted.5.1.2Inordertoimprovethepropertyof20Rand16MnR,tracealloyelementsmaybeadded.5.1.3ThepermissibledeviationsofchemicalcompositionforfinishedsteelplatesshallbeinconformitywiththeprovisionsassetforthinGB222.5.2SmeltingProcessThesteelsaresmeltedinoxygenconverterandelectricfurnace.Allgradesofsteelarekilledsteel.5.3DeliveryConditions5.3.1ThesteelplateshallbedeliveredintheconditionsasspecifiedinTable4.Thetemperingtemperatureof18MnMoNbR,13MnNiMoNbR,15CrMoshallnotbelessthan620.
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