ASTM F 1807a-2007 SDR9交联聚乙烯(PEX)管用利用卷制铜环的金属内插件的标准规范
时间:2024-04-30 09:42:55 来源: 标准资料网 作者：标准资料网 阅读：9444
【英文标准名称】:StandardSpecificationforMetalInsertFittingsUtilizingaCopperCrimpRingforSDR9Cross-linkedPolyethylene(PEX)Tubing
【原文标准名称】:SDR9交联聚乙烯(PEX)管用利用卷制铜环的金属内插件的标准规范
【标准号】:ASTMF1807a-2007
【标准状态】:作废
【国别】:美国
【发布日期】:2007
【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】:配件;塑料管道;聚乙烯;压力管;规范
【英文主题词】:Fittings;Plasticpipelines;Polyethylene;Pressurepipes;Specification
【摘要】:
【中国标准分类号】:J15
【国际标准分类号】:23_040_40
【页数】:6P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforBulkDensityofGranularRefractoryMaterials
【原文标准名称】:粒状耐火材料的体密度用标准试验方法
【标准号】:ASTMC357-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:C08.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:体密度;密度;耐火材料;测试
【英文主题词】:blottingcloth;boiling;bulkdensity;buret;granularrefractor;material;non-hydratable;sheen
【摘要】:Granularrefractorymaterialsmaybeeitherrefractorygrainrawmaterialsthatareusedinthemanufactureoffinishedrefractoryproducts,orbulkgranularrefractorymaterialsthataresold,withorwithoutsomedegreeofprocessing,torefractoryconsumersforvarioususes.Ineithercase,characterizingthepropertiesofagranularrefractorymaterialisessentialinevaluatingitsqualityorconsistencyofqualityandindeterminingsuitabilityforenduse.Oneoftheimportantpropertiesisbulkdensitybecauseofitsrelationshiptoendproductquality,usage,andperformance.Therefractoriesproducercanusethistestmethodasoneofthequality-controltestsforhismanufacturedorminedrefractorygrainrawmaterialsorforevaluatingpotentialrefractorygrainrawmaterials.Fortherefractoriesconsumer,theprincipaluseofthistestmethodisintheevaluationofthequalityortheconsistencyofqualityofthegranularmaterialinpurchasedrefractorymixesorinbulkgranularrefractorymaterialsusedbytheconsumer.Thisisaprimarytestmethod,andthusissuitableforuseinspecifications,qualitycontrol,andresearchanddevelopment.Itcanalsoserveasarefereetestmethodinpurchasingcontractsoragreementsandasabasefordevelopmentofmorerapid,secondarytestmethodsforuseinqualitycontrolonmanufacturedrefractoryrawmaterials.Fundamentalassumptionsinherentinthistestmethodarethatthesampleisrepresentativeofthematerialingeneral,theparticlesizeofthesampleiswithintherangespecifiedbythetestmethod,thematerialisnotreadilyhydratable,andthesizeandquantityofporesinthematerialpermitsremovalofsurfacewaterwithoutdrainagefromtheporesthemselves.Deviationfromanyoftheseassumptionsnegatestheusefulnessofthetestresults.Ininterpretingtheresultsofthistestmethod,itmustberecognizedthatthespecificgravityofthematerialaswellastheporosityaffectsthevalueobtainedforbulkdensity.Thus,comparisonsofresultsshouldonlybemadebetweenlikematerialsorwithfullrecognitionofinherentdifferencesbetweenthematerialsbeingcompared.1.1Thistestmethodcoversaprocedurefordeterminingthebulkdensityofgranularrefractorymaterials,commercialproductswhichusuallyhaveparticlesthatareretainedona0.265-in.(6.7-mm)orcoarsersieve.Note18212;Thistestmethodisnotsuitableformaterialsthathydrateinboilingwater.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:3P.;A4
【正文语种】: