BS EN 1452-2-2000 供水塑料管道系统.非增塑的聚氯乙烯(PVC-U).管材

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【英文标准名称】:Plasticspipingsystemsforwatersupply-Unplasticizedpoly(vinylchloride)(PVC-U)-Pipes
【原文标准名称】:供水塑料管道系统.非增塑的聚氯乙烯(PVC-U).管材
【标准号】:BSEN1452-2-2000
【标准状态】:现行
【国别】:英国
【发布日期】:2000-05-15
【实施或试行日期】:2000-05-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:塑料;冷水供给系统;挤压;管;管道配件;未增塑聚氯乙烯;压力管;总水管;水;塑料管道;色码;给水;套筒接合;饮用水;外部;内部;地下;分类系统;给水工程;高聚物;温度;尺寸;建筑物;给水(建筑物);管道工程系统;聚氯乙烯
【英文主题词】:Adhesives;Chemicalproperties;Definitions;Marking;Materials;Mechanicalproperties;Physicalproperties;Pipelines;Pipes;Pipingsystem;Plasticpipelines;Plasticpipes;Plastics;Properties;PVC-pipes;PVC-U;Sealingrings;Specification(approval);Unplasticizedpolyvinylchloride;Waterpipes;Waterpractice;Watersupply
【摘要】:ThispartofEN1452specifiesthecharacteristicsofpipesmadefromunplasticizedpoly(vinylchloride)(PVC-U)forpipingsystemsinthefieldofwatersupply.Italsospecifiesthetestparametersforthetestmethodsreferredtointhisstandard.InconjunctionwithParts1to5ofEN1452andENV1452-7,itisapplicabletoextrudedPVC-Upipeswithoutasocketandpipeswithasocket(integralornot),intendedtobeusedforthefollowing:a)watermainsandservicesburiedinground;b)conveyanceofwaterabovegroundforbothoutsideandinsidebuildings;forthesupplyofwaterunderpressureatapproximately20℃(coldwater)intendedforhumanconsumptionandforgeneralpurposes.Thisstandardisalsoapplicabletopipesfortheconveyanceofwateruptoandincluding45℃.Fortemperaturesbetween25℃and45℃FigureA.1inannexAapplies.Thisstandardcoversarangeofpipesizesandpressureclassesandgivesrequirementsconcerningcolours.NOTEItistheresponsibilityofthepurchaserorspecifiertomaketheappropriateselectionsfromtheseaspects,takingintoaccounttheirparticularrequirementsandanyrelevantnationalregulationsandinstallationpracticesorcodes.
【中国标准分类号】:G33
【国际标准分类号】:91_140_60
【页数】:36P;A4
【正文语种】:英语


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【英文标准名称】:StandardTestMethodforDynamicYoung'sModulus,ShearModulus,andPoisson'sRatiobyImpulseExcitationofVibration
【原文标准名称】:用振动脉冲激励测定动态杨氏模量、剪切模数和泊松比的标准试验方法
【标准号】:ASTME1876-2007
【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】:E28.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:陶瓷;动态的;弹性模量;弹性(流体);脉冲;泊松比;瓷器;剪切模量;试验方法;杨氏模量
【英文主题词】:dynamic;elasticmodulus;elasticproperties;impulse;Poisson'sratio;shearmodulus;Young'smodulus
【摘要】:1.1Thistestmethodcoversdeterminationofthedynamicelasticpropertiesofelasticmaterialsatambienttemperatures.Specimensofthesematerialspossessspecificmechanicalresonantfrequenciesthataredeterminedbytheelasticmodulus,mass,andgeometryofthetestspecimen.Thedynamicelasticpropertiesofamaterialcanthereforebecomputedifthegeometry,mass,andmechanicalresonantfrequenciesofasuitable(rectangularorcylindricalgeometry)testspecimenofthatmaterialcanbemeasured.DynamicYoung'smodulusisdeterminedusingtheresonantfrequencyineithertheflexuralorlongitudinalmodeofvibration.Thedynamicshearmodulus,ormodulusofrigidity,isfoundusingtorsionalresonantvibrations.DynamicYoung'smodulusanddynamicshearmodulusareusedtocomputePoisson'sratio.1.2Althoughnotspecificallydescribedherein,thistestmethodcanalsobeperformedatcryogenicandhightemperatureswithsuitableequipmentmodificationsandappropriatemodificationstothecalculationstocompensateforthermalexpansion.1.3TherearematerialspecificASTMstandardsthatcoverthedeterminationofresonancefrequenciesandelasticpropertiesofspecificmaterialsbysonicresonanceorbyimpulseexcitationofvibration.TestMethodsC215,C623,C747,C848,C1198,andC1259maydifferfromthistestmethodinseveralareas(forexample;samplesize,dimensionaltolerances,samplepreparation).Thetestingofthesematerialsshallbedoneincompliancewiththesematerialspecificstandards.Wherepossible,theprocedures,samplespecificationsandcalculationsareconsistentwiththesetestmethods.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:81_060_20
【页数】:15P.;A4
【正文语种】:


【英文标准名称】:Project25-DigitalRadioOvertheAirRekeying(OTAR)Protocol-Addendum1-KeyManagementSecurityRequirementsforType3BlockEncryptionAlgorithms
【原文标准名称】:项目25.数字无线电远程再加密(OTAR)协议.附录1.类型3块加密算法的密钥管理安全要求
【标准号】:ANSI/TIA/EIA102AACA-1-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【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】:
【英文主题词】:
【摘要】:ThisdocumentspecifiesamethodtotransportOvertheAir(OTAR)KeyManagementMessages.
【中国标准分类号】:M11
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语