GB 8876-1988 粮食干燥机技术条件
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基本信息
| 标准名称： | 粮食干燥机技术条件 |
| 中标分类： | 食品 >> 食品加工机械 >> 粮食与油脂加工机械 |
| 替代情况： | 调整为LS/T 3516-1988 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1988-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 2页 |
适用范围
没有内容
前言
没有内容
目录
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引用标准
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所属分类： 食品 食品加工机械 粮食与油脂加工机械
下载地址: 点击此处下载
【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】:
【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】:
基本信息
| 标准名称： | TC16钛合金MJ螺纹螺栓螺钉通用规范 |
| 英文名称： | General specification for MJ thread bolts and screws in titanium alloy TC16 |
| 中标分类： | 航空、航天 >> 航空器与航天器零部件 >> 紧固件 |
| 发布日期： | 2003-02-24 |
| 实施日期： | 2003-02-24 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 18页 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 航空 航天 航空器与航天器零部件 紧固件