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【英文标准名称】:StandardSpecificationforGlassStopcockswithPolytetrafluoroethylene(PTFE)Plugs
【原文标准名称】:聚四氟乙烯(PTFE)插头的玻璃管旋塞阀标准规范
【标准号】:ASTME911-1998(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:E41.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:glass;PTFE;stopcocks;Glasslaboratoryapparatus--specifications;Laboratoryapparatus--specifications;PTFE(polytetrafluoroethylene)--specifications;Stopcocks/stoppers
【摘要】:1.1Thisspecificationcoversstandarddimensionalrequirementsforobtaining,withinpracticallimits,interchangeabilityinglassstopcocks(Note1)withpolytetrafluoroethylene(PTFE)plugsforordinarylaboratoryandindustrialapplications.Itcoversdimensionalinterchangeabilityonlyanddoesnotinvolvedesigncharacteristicsoftheitemexceptwherespecified,nordoesitinvolvephysicalorchemicalcharacteristicsofthematerialused.Itdoesnotcoverglassstopcockswithglassplugs(Note2)orstopcocksintendedforuseinhigh-vacuumwork.Note18212;Astopcockisdefinedasconsistingofaplugandbarrelinassembledconfiguration.Note28212;GlassstopcockswithglassplugsarecoveredbySpecificationE675.Note38212;ThedimensionspertainingtostopcocksweretakenfromthenowobsoleteCommercialStandardCS21-58oftheU.S.DepartmentofCommerceandProductStandardPS28-70publishedbytheNationalBureauofStandards.Note48212;Althoughglassisthemostcommonmaterialforstopcocks,othermaterialsmaybeusedasspecified.StopcocksconstructedfromglassshallbeinaccordancewithSpecificationsE438andE671.
【中国标准分类号】:N64
【国际标准分类号】:71_040_20
【页数】:4P.;A4
【正文语种】:英语