基本信息
| 标准名称： | 中国邮政金融计算机网络通信协议TCP/IP |
| 发布日期： | 1996-01-01 |
| 实施日期： | 1999-03-01 |
| 首发日期： | |
| 作废日期： | |
| 起草单位： | 邮电部数据所和邮电部绿卡办负责起草 |
| 出版日期： | |
| 页数： | 16页 |
适用范围
主题内容：它包括传输控制协议（TCP）和网际（IP）的简单说明、格式、操作和中国邮政金融计算机网络目前采用的相关参数。适用范围：中国邮政金融业务设备和信息中心系统组成的计算机网络
前言
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目录
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引用标准
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所属分类： 通信 广播 通信网 通信网技术体制
【英文标准名称】:StandardPracticeforObtainingHydrostaticorPressureDesignBasisfor"Fiberglass"(Glass-Fiber-ReinforcedThermosetting-Resin)PipeandFittings
【原文标准名称】:玻璃纤维(增强的热固树脂玻璃纤维)管及配件用液体静压设计基础标准实施规程
【标准号】:ASTMD2992-2006
【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】:D20.23
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:结构;配件;玻璃纤维;静液压;管;塑料管;塑料;塑料制品;压力;工艺
【英文主题词】:closure;cyclicpressure;designbasis;fiberglasspipe;reconfirmation;staticpressure
【摘要】:1.1Thispracticeestablishestwoprocedures,ProcedureA(cyclic)andProcedureB(static),forobtainingahydrostaticdesignbasis(HDB)orapressuredesignbasis(PDB)forfiberglasspipingproducts,byevaluatingstrength-regressiondataderivedfromtestingpipeorfittings,orboth,ofthesamematerialsandconstruction,eitherseparatelyorinassemblies.Bothglass-fiber-reinforcedthermosetting-resinpipe(RTRP)andglass-fiber-reinforcedpolymermortarpipe(RPMP)arefiberglasspipe.Note18212;Forthepurposesofthisstandard,polymerdoesnotincludenaturalpolymers.1.2ThispracticecanbeusedfortheHDBdeterminationforfiberglasspipewheretheratioofoutsidediametertowallthicknessis10:1ormore.Note28212;Thislimitation,basedonthin-wallpipedesigntheory,servesfurthertolimittheapplicationofthispracticetointernalpressureswhich,bythehoop-stressequation,areapproximately20%ofthederivedhydrostaticdesignstress(HDS).Forexample,ifHDSis5000psi(34500kPa),thepipeislimitedtoabout1000-psig(6900-kPa)internalpressure,regardlessofdiameter.1.3ThispracticeprovidesaPDBforcomplex-shapedproductsorsystemswherecomplexstressfieldsseriouslyinhibittheuseofhoopstress.1.4Specimenendclosuresintheunderlyingtestmethodsmaybeeitherrestrainedorfree,leadingtocertainlimitations.1.4.1RestrainedEnds8212;Specimensarestressedbyinternalpressureonlyinthehoopdirection,andtheHDBisapplicableforstressesdevelopedonlyinthehoopdirection.1.4.2FreeEnds8212;Specimensarestressedbyinternalpressureinbothhoopandlongitudinaldirections,suchthatthehoopstressistwiceaslargeasthelongitudinalstress.Thispracticemaynotbeapplicableforevaluatingstressesinducedbyloadingswherethelongitudinalstressexceeds50%oftheHDS.1.5Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesaregivenforinformationpurposesonly.Note38212;ThereisnosimilarorequivalentISOstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G33
【国际标准分类号】:23_040_20;23_040_45
【页数】:11P.;A4
【正文语种】: