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【英文标准名称】:StandardPracticeforCollectionofaGrossSampleofCoal
【原文标准名称】:煤的总样品收集用标准实施规程
【标准号】:ASTMD2234/D2234M-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【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】:D05.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:采煤样系统
【英文主题词】:Coalsamplingsystems
【摘要】:Itisintendedthatthispracticebeusedtoprovideasamplerepresentativeofthecoalfromwhichitiscollected.Becauseofthevariabilityofcoalandthewidevarietyofsamplingequipment,cautionshouldbeusedinallstagesofsamplingfromsystemspecificationsandequipmentprocurementtoequipmentacceptancetestingandactuallytakingthefinalsample.Afterfurtherprocessing(PracticeD2013),thesamplemaybeanalyzedforanumberofdifferentparameters.Theseparametersmayaffectthelot''svalue,itsabilitytomeetspecifications,itsenvironmentalimpact,aswellasotherproperties.1.1Thispracticecoversproceduresforthecollectionofasampleundervariousconditionsofsampling.ThesampleistobecrushedandfurtherpreparedforanalysisinaccordancewithPracticeD2013.However,theproceduresfordividinglargesamplesbeforeanycrushingaregiveninthispractice.ForthesamplingofcoalusingmechanicalsamplingsystemsseeD7430PracticefortheMechanicalSamplingofCoal.1.2Thispracticedescribesgeneralandspecialpurposesamplingproceduresforcoals(1)bysizeandconditionofpreparation(forexample,mechanicallycleanedcoalorrawcoal)and(2)bysamplingcharacteristics.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:D21
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:StandardSpecificationforSteelCastingsSuitableforPressureService
【原文标准名称】:受压钢铸件的标准规范
【标准号】:ASTMA487/A487M-1993
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【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】:钢;防压;铸件
【英文主题词】:Castings;Pressureproof;Steels
【摘要】:
【中国标准分类号】:J31
【国际标准分类号】:77_140_80
【页数】:6P;A4
【正文语种】:英语