【英文标准名称】:StandardTestMethodforPressureRatingPoly(VinylChloride)(PVC)PlasticPipeFittings,Schedule40and80Socket-Type
【原文标准名称】:表40～80额定压力氯乙烯(PVC)塑料管配件的标准试验方法
【标准号】:ASTMF2261-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:F17.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:氯化物;配件;管道配件;塑料管;塑料配件;额定压力;PVC;额定植;座孔;试验;氯乙烯
【英文主题词】:PVCsocketfittings;pressurerating;method
【摘要】:Theprocedureforestablishingthelong-termpressureratingoffittingsstartswithanextrapolationofaregressionlinethatisbasedonfittingfailuredatawithrespecttotime,whenassembliesaretestedinaccordancewithTestMethodD1598.Thepressure-versustimetofailuredataareobtainedusingwaterat73x00B0;Finassembliesthatareimmersedinawaterorairenvironment.Theextrapolationismadeinsuchamannerthatthelong-termhydrostaticpressureratingisdeterminedfortheseconditions.Thepressuredesignbasisisdeterminedbyconsideringthefollowingitemsandevaluatingtheminaccordancewith6.3.4.2.1Long-termhydrostaticpressure-strengthat100000h,4.2.2Long-termhydrostaticpressure-strengthat50yearsThefittingpressureratingmaybecalculatedbymultiplyingthepressuredesignbasis(PDB)bytheappropriatedesignfactor(DF).1.1ThistestmethodcoversaprocedureforestablishingPressureRatingforPVCschedule40and80socket-typefittingsbyevaluatingfittingfailuretestdataderivedbytestingwater-filledassembliesofpipeandfittings.1.2Unlessthedataapproximatesastraightline,whencalculatedusinglog-logcoordinates,itisnotpossibletoassignapressureratingtothatproductorsampleofproduct.Datathatexhibithighscatter,oradownwardcurve,duetolowlongtermdata,willgivelowextrapolatedvaluesthataremoreconservativewhencalculatedusinglog-logco-ordinates.Inaddition,thisdownwardcurvewillshowashigherscatter,andwherethelowerconfidencelevellimitsarenotmetthedatashallbeclassifiedasunsuitable.(SeeNote1)Note1ThistestmethodissimilartothatusedinTestMethodD2837,whichhasbeenusedforabout30yearstoestablishtheHDSofplasticpipematerialsandisthebasisforallpressureratingsassignedtoplasticpipes.1.3Theproductscoveredbythistestmethodareschedule40or80moldedPVCfittingsthatconformtoSpecificationsD2466orD2467.1.4Thepressureratingsdevelopedusingthistestmethodappliesonlytofittingsidenticaltotheonesthatweretested.Somevariablesthatwillaffectthepressureratingare-pipesize,pattern,molddesign,material,andmoldingconditions.1.5Thevaluesininch-poundunitsaretoberegardedasthestandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6ThetestingprocedureusedtoobtainthefittingfailuredatashallbeasdescribedinthosesectionsofTestMethodD1598,thatarereferencedinSectionofthistestmethod.1.7Theproductscoveredbythistestmethodareintendedforuseinthedistributionofpressurizedliquidsat73176;F.Whenappropriate,thedesignengineermustconsidertheeffectsofelevatedtemperatureandchemicalcompatibilityoftheliquidwiththefittingmaterialandapplynecessarydesignfactors.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicationofregulatorylimitationspriortouse.Note2Pressurized(compressed)airorothercompressedgasescontainlargeamountsofstoredenergywhichpresentserioussafetyhazardsshouldasystemfailforanyreason.
【中国标准分类号】:J15
【国际标准分类号】:23_040_45
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Thermalinsulatingproductsforbuildingapplications.Determinationoftheapparentdensity.
【原文标准名称】:建筑物绝热产品.表面密度测定
【标准号】:NFP75-206-1997
【标准状态】:现行
【国别】:法国
【发布日期】:1997-07-01
【实施或试行日期】:1997-07-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:材料试验;计算公式;试验装置;试验;尺寸;定义;测定;特性;施工材料;密度测量;体密度;试样;密度测定法;密度;建筑;绝缘材料;隔热;测量技术;塑料;绝热材料;建筑物
【英文主题词】:
【摘要】:
【中国标准分类号】:Q25
【国际标准分类号】:91_100_60
【页数】:11P;A4
【正文语种】:其他