基本信息
| 标准名称： | 节流阀技术条件 |
| 英文名称： | Specification for butterfly valve |
| 中标分类： |
医药、卫生、劳动保护 >>
医药、卫生、劳动保护综合 >>
技术管理 |
| 发布日期： | 1989-02-10 |
| 实施日期： | 1989-03-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 医药 卫生 劳动保护 医药 卫生 劳动保护综合 技术管理
【英文标准名称】:SpecificationforLow-DensityPolyethyleneFilmsforGeneralUseandPackagingApplications(08.03)
【原文标准名称】:通用和包装用低密度聚乙烯膜规范
【标准号】:ANSI/ASTMD4635-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【实施或试行日期】:2001-06-10
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:聚乙烯;塑料;包装件
【英文主题词】:plastics;packages;polyethylene
【摘要】:Thisspecificationcoversunpigmented,unsupported,low-densitypolyethylenefilms(hereafterreferredtoasfilmorfilms)fromClass1polyethylenesperSpecificationD4976.Note1-Thedensityofafilmwillnotnecessarilybeequaltothedensityofamoldedplaquefromthesameresin.Note2-Blendsofethylene/vinylacetate(EVA)withlow-densitypolyethylenemayhavedensitiesupto0.929g/cm.Thisspecificationisapplicabletohomopolymerpolyethylene,butisnotrestrictedtoit.Itisapplicabletofilmsmadefrompolyethylenecopolymers,andalsoapplicabletofilmsmadefromblendsofhomopolymersandcopolymers,includingethylene/vinylacetatecopolymers.Thethicknessofthefilmscoveredbythisspecificationis100?morless(0.004in.orless),inclusive.Themaximumwidthofthesheetorlayflatis3.00m(120in.).Thisspecificationdoesnotcoverorientedheat-shrinkablefilms.Thisspecificationallowsfortheuseofrecycledpolyethylenefilmorresinasfeedstock,inwholeorinpart,aslongasalloftherequirementsofthisspecificationaremetandaslongasanyspecificrequirementsasgovernedbytheproducerandenduserarealsomet.(SeeNote3.)Note3-GuideD7209describesterminologyanddefinitionsrelatedtorecycledplastics.Thisspecificationdefinesthelevelsofthevariousphysicalpropertiesfromwhichspecificationsforspecificfilmsmaybedescribed.ThelevelsofphysicalpropertiesrequiredbyafilmforagivenapplicationareselectedfromSection6.However,Sections2-5relatingtotolerancesshallapplywithoutchangetoallfilmfallingwithinthescopeindicatedbythetitleand1.1-1.4.Thisspecificationcoversdimensionaltolerances,classifications,intrinsicqualityrequirements,andtestmethods.Thedimensionaltolerancesincludethickness,width,andlengthoryield.Classificationdefinestypes,classes,surfaces,andfinishes.Theintrinsicqualityrequirementsincludedensity,workmanship,tensilestrength,heatsealability,andodor,aswellastheclassificationpropertiesforimpactstrength,coefficientoffriction,opticalproperties,andsurfacetreatment.Asamplingmethodisincluded.ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note4-ThereisnosimilarorequivalentISOspecification.
【中国标准分类号】:G33
【国际标准分类号】:83_140_10
【页数】:
【正文语种】:英语