BS EN 2874-1996 钝化处理的耐热镍基合金中长度螺纹紧公差标准螺杆的大双六角头螺栓.等级:1550MPa(室温)/315℃
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【英文标准名称】:Bolts,largebihexagonalhead,closetolerancenormalshank,mediumlengththread,inheatresistingnickelbasealloy,passivated-Classification:1550MPa(atambienttemperature)/315°C
【原文标准名称】:钝化处理的耐热镍基合金中长度螺纹紧公差标准螺杆的大双六角头螺栓.等级:1550MPa(室温)/315℃
【标准号】:BSEN2874-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1996-12-15
【实施或试行日期】:1996-12-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:角(几何学);尺寸公差;镍合金;螺纹紧固件;飞行器部件;钝化;抗拉强度;耐热材料;紧固件;温度;螺纹;尺寸;名称与符号;外螺纹紧固件;质量(物质);螺栓
【英文主题词】:
【摘要】:Thisstandardspecifiesthecharacteristicsofbolts,largebihexagonalhead,closetolerancenormalshank,mediumlengththread,inheatresistingnickelbasealloy,passivated.Classification:1550MPa/315℃note:1)Minimumtensilestrengthofthematerialatambienttemperature2)Maximumtemperaturethattheboltcanwithstandwithoutcontinuouschangeinitsoriginalcharacteristics,afterreturntoambienttemperature.Themaximumtemperatureisdeterminedbythesurfacetreatment.
【中国标准分类号】:J13
【国际标准分类号】:49_030_20
【页数】:14P;A4
【正文语种】:英语
【英文标准名称】:Fertilizers.Sampling.Methodforreductionofsamplesofsolidfertilizers
【原文标准名称】:肥料.第2部分:取样.第5节:固体肥料样品的减量方法
【标准号】:BS5551Sec.2.5-1989
【标准状态】:作废
【国别】:英国
【发布日期】:1989-02-28
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:农用化学制品;固体;肥料;抽样方法;采样设备;误差分析;偏差
【英文主题词】:agriculturalchemicals;bias;solids;erroranalysis;samplingequipment;fertilizers;samplingmethods
【摘要】:
【中国标准分类号】:G20
【国际标准分类号】:
【页数】:8P;A4
【正文语种】:英语
【英文标准名称】:StandardGuideforAssessingBiodegradabilityofHydraulicFluids
【原文标准名称】:评定液压流体生物降解性的标准指南
【标准号】:ASTMD6006-1997a(2003)
【标准状态】:现行
【国别】:
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D02.12
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:biodegradation;hydraulicfluids;persistence;water-insoluble;
【摘要】:Thisguidediscusseswaystoassessthelikelihoodthatahydraulicfluidwillundergobiodegradationifitentersanenvironmentthatisknowntosupportbiodegradationofsomesubstances,forexamplethematerialusedasthepositivecontrolinthetest.Theinformationcanbeusedinmakingorassessingclaimsofbiodegradabilityofafluidformula.Biodegradationoccurswhenafluidinteractswiththeenvironment,andsotheextentofbiodegradationisafunctionofboththechemicalcompositionofthehydraulicfluidandthephysical,chemical,andbiologicalstatusoftheenvironmentatthetimethefluidentersit.Thisguidecannotassistinjudgingthestatusofaparticularenvironment,soitisnotmeanttoprovidestandardsforjudgingthepersistenceofahydraulicfluidinanyspecificenvironmenteithernaturalorman-made.Ifanyofthetestsdiscussedinthisguidegivesahighresult,itimpliesthatthehydraulicfluidwillbiodegradeandwillnotpersistintheenvironmentalcompartmentbeingconsidered.Ifalowresultisobtained,itdoesnotmeannecessarilythatthesubstancewillnotbiodegradeintheenvironment,butdoesmeanthatfurthertestingisrequiredifaclaimofbiodegradabilityistobemade.Suchtestingmayinclude,butisnotlimitedto,othertestsmentionedinthisguideorsimulationtestsforaparticularenvironmentalcompartment.1.1Thisguideprovidesinformationtoassistinjudgingthebiodegradabilityofanunusedfullyformulatedhydraulicfluidinitsoriginalform.Biodegradabilityisoneofthreecharacteristicswhichareassessedwhenjudgingtheenvironmentalimpactofahydraulicfluid.Theothertwocharacteristicsareecotoxicityandbioaccumulation.1.2Biodegradabilitymaybeconsideredbytypeofenvironmentalcompartment:aerobicfreshwater,aerobicmarine,aerobicsoil,andanaerobicmedia.Testmethodsforaerobicfreshwater,aerobicsoilandanaerobicmediahavebeendevelopedthatareappropriatefortheconcernsandneedsoftestingineachcompartment.1.3Thisguideaddressesreleasestotheenvironmentthatareincidentaltotheuseofahydraulicfluidbutisnotintendedtocoversituationsofmajor,accidentalrelease.Nothinginthisguideshouldbetakentorelievetheuseroftheresponsibilitytoproperlyuseanddisposeofhydraulicfluids.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E39
【国际标准分类号】:75_120
【页数】:6P.;A4
【正文语种】:
