【英文标准名称】:Plasticspipingsystemsforwatersupply-Unplasticizedpoly(vinylchloride)(PVC-U)-Part4:Valvesandancillaryequipment;GermanversionEN1452-4:1999
【原文标准名称】:供水用塑料管道系统.未增塑聚氯乙烯.第4部分:阀门和辅助设备
【标准号】:DINEN1452-4-1999
【标准状态】:作废
【国别】:德国
【发布日期】:1999-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:水常规;作标记;塑料管;化学性质;聚乙烯管;放水阀;材料;特性;规范(验收);塑料;给水;阀门;管;管系统;物理性能;管道阀门和配件;水管;附件;管道;未增塑聚氯乙烯;未增塑聚氯乙烯;机械性能
【英文主题词】:Accessories;Chemicalproperties;Definitions;Marking;Materials;Mechanicalproperties;Physicalproperties;Pipelines;Pipes;Pipingsystem;Plasticpipelines;Plasticpipes;Plastics;Properties;PVC-pipes;PVC-U;Specification(approval);Tappingtees;Unplasticizedpolyvinylchloride;Valves;Valvesandfittingsforpipelines;Waterpipes;Waterpractice;Watersupply
【摘要】:Thedocumentspecifiesthecharacteristicsofvalvesandancillaryequipmentmadefromunplasticizedpoly(vinylchloride)(PVC-U)forpipingsystemsinthefieldofwatersupply.
【中国标准分类号】:Q81
【国际标准分类号】:91_140_60
【页数】:18P.;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforStiffnessPropertiesofPlasticsasaFunctionofTemperaturebyMeansofaTorsionTest
【原文标准名称】:用扭转试验法测定温度对塑料强度变化的标准试验方法
【标准号】:ASTMD1043-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;试验;特性;硬挺度
【英文主题词】:Clash-Berg;modulusofrigidity;plast;shear;torsion;NumberCode83.080.01(Plastingeneral)
【摘要】:Thepropertymeasuredbythistestistheapparentmodulusofrigidity,G,sometimescalledtheapparentshearmodulusofelasticity.Itisimportanttonotethatthispropertyisnotthesameasthemodulusofelasticity,E,measuredintension,flexure,orcompression.TherelationshipbetweenthesepropertiesisshowninAnnexA1.Themeasuredmodulusofrigidityistermedx201C;apparentx201D;sinceitisthevalueobtainedbymeasuringtheangulardeflectionoccurringwhenthespecimenissubjectedtoanappliedtorque.Sincethespecimenmaybedeflectedbeyonditselasticlimit,thecalculatedvaluemaynotrepresentthetruemodulusofrigiditywithintheelasticlimitofthematerial.Inaddition,thevalueobtainedbythistestmethodwillalsobeaffectedbythecreepcharacteristicsofthematerial,sincetheloadapplicationtimeisarbitrarilyfixed.Formanymaterials,theremaybeaspecificationthatrequirestheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1inClassificationD4000liststhecurrentASTMmaterialsstandards.Thistestmethodisusefulfordeterminingtherelativechangesinstiffnessoverawiderangeoftemperatures.1.1Thistestmethodcoversthedeterminationofthestiffnesscharacteristicsofplasticsoverawidetemperaturerangebydirectmeasurementoftheapparentmodulusofrigidity.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThistestmethodisnotequivalenttoISO458/1:1985orISO458/2:1985andresultscannotbedirectlycomparedbetweenthetwomethods.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:12P.;A4
【正文语种】:
基本信息
| 标准名称： | Ｈ型孔系组合夹具定位件 球面支承钉 |
| 中标分类： |
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| 发布日期： | 1992-01-23 |
| 实施日期： | 1992-03-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
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