EN 12560-4-2001 法兰及其接头.分级标识法兰用垫圈.第4部分:钢法兰用波纹形、平的或开槽的金属和嵌条金属垫圈
时间:2023-09-30 08:19:54 来源: 标准资料网 作者：标准资料网 阅读：8798
【英文标准名称】:Flangesandtheirjoints-Gasketsforclass-designatedflanges-Part4:Corrugated,flatorgroovedmetallicandfilletmetallicgasketsforusewithsteelflanges;GermanversionEN12560-4:2001
【原文标准名称】:法兰及其接头.分级标识法兰用垫圈.第4部分:钢法兰用波纹形、平的或开槽的金属和嵌条金属垫圈
【标准号】:EN12560-4-2001
【标准状态】:现行
【国别】:
【发布日期】:2001-04
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:材料;金属;设计;作标记;管道;法兰管件;配件;定义;法兰密封件;局部密封;形状;管;钢法兰;衬垫;名称与符号;外形;密封材料;金属材料;尺寸;尺寸;法兰;管联接器
【英文主题词】:Class;Definition;Definitions;Design;Designations;Dimensions;Fittings;Flangesealings;Flangedfittings;Flanges;Gaskets;Marking;Materials;Metallicmaterials;Metals;Pipecouplings;Pipelines;Pipes;Profile;Sealingmaterials;Sectionalseals;Shape;Size;Steelflanges
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:23_040_80
【页数】:11P.;A4
【正文语种】:英语
【英文标准名称】:CentrifugallyCastAusteniticSteelCold-WroughtPipeforHigh-TemperatureService
【原文标准名称】:高温用离心铸造冷锻奥氏体钢管
【标准号】:ASTMA452-1988
【标准状态】:作废
【国别】:美国
【发布日期】:1988
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:管;高温;铸件;离心铸造;钢
【英文主题词】:pipes;castings;steels;centrifugalcasting;hightemperatures
【摘要】:
【中国标准分类号】:H48
【国际标准分类号】:77_140_70
【页数】:4P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforSyntheticAnionicIngredientbyCationicTitration
【原文标准名称】:用氧离子滴定法合成阴离子配合剂的测试方法
【标准号】:ASTMD3049-1989(2003)
【标准状态】:现行
【国别】:
【发布日期】:1989
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D12.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;合成的;滴定法;清洗材料;掺和剂;肥皂
【英文主题词】:anionicsurfactants;cationictitrations;two-phasetitrations
【摘要】:Thistestmethodoffersameansofdetermininganionicdetergentscommonlyfoundinlaundry,dishwashing,andothercleaningmaterials.Accuratedeterminationoftheanionicactivesubstanceishighlyimportantinassessingthecostandeffectivenessofsuchcleaningsubstances.Thistestmethodisnotaffectedbylowmolecularweightsulfonates,suchasthoseoftolueneandxylenecommonlyfoundindetergentformulations,whenthesesubstancesarepresentupto15weight%ofactivematerial.1.1Thistestmethodcoversthedeterminationoftheamountofsyntheticanionicingredientinasurfactantbydirecttitrationwithastandardizedcationicreagent.Thetestmethodisasimpleandconvenientmeansforthequantitativeestimationoftheanionicmaterial.Theendpointisdetectedbythetransferofacoloredcomplexfromanorganicsolventphasetoanaqueousphase.Thecoloredcomplexisformedbytheadditionofasolutionofdyetoasolutionoftheanionicsurfactant.Thiscomplexissolubleintheorganic-solventphaseandinsolubleintheaqueousphase.Whenthissolutionistitratedwithastandardizedsolutionofacationicreagent,thedyeisdisplacedfromthecoloredcomplexand,beingwater-soluble,migratestotheaqueousphase.Therefore,acationictitratingsolutionthathasbeenstandardizedagainstacharacterizedanionicagentcanbeusedtoanalyzeforotheranionicsofknownmolecularmass.1.2Thistestmethodisapplicabletoalkylarylsulfonates,alkylsulfonates,alkylsulfatesandhydroxy-sulfates,alkylphenol-andfattyalcoholethoxy-sulfatesanddialkylsulfosuccinates.Itappliestoactivematerialscontainingonehydrophilicgrouppermolecule.1.3Theanalyticalproceduresappearinthefollowingorder:SectionsReagents6PrimaryStandard8Purity8.2Alcohols8.3FreeAcidorAlkali8.4PreparationofMixedIndicatorSolution9PreparationofHyamineSolution10StandardizationofHyamineSolution11GeneralProcedureforAnionic-ActiveMaterial12