2023年全國(guó)碩士研究生考試考研英語(yǔ)一試題真題（含答案詳解+作文范文）_第1頁(yè)
已閱讀1頁(yè)，還剩2頁(yè)未讀， 繼續(xù)免費(fèi)閱讀

下載本文檔

版權(quán)說(shuō)明：本文檔由用戶提供并上傳，收益歸屬內(nèi)容提供方，若內(nèi)容存在侵權(quán)，請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)

文檔簡(jiǎn)介

1、Designation:A363?03(Reapproved2014)StardSpecificationfZincCoated(Galvanized)SteelOverheadGroundWireStr1ThisstardisissuedunderthefixeddesignationA363thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladopt

2、ioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thisspecificationcovershighstrengthextrahig

3、hstrengthutilitiesgradesofconcentriclaysteelwirestrcomposedofthreewiressevenwireswithClassAClassBClassCzinccoatingsspecificallyintendedfuseasoverheadgroundwiresstaticwiresfelectricpowertransmissionlines.1.2Thevaluesstate

4、dininchpoundunitsaretoberegardedasstard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedfinfmationonlyarenotconsideredstard.2.ReferencedDocuments2.1ASTMStards:A90A90MTestMethodfWeight[Mass]of

5、CoatingonIronSteelArticleswithZincZincAlloyCoatingsA902TerminologyRelatingtoMetallicCoatedSteelProductsB6SpecificationfZinc3.Terminology3.1Definitions—FdefinitionsoftermsusedinthisspecificationrefertoTerminologyA902.4.de

6、ringInfmation4.1dersfstrpurchasedunderthisspecificationshallincludethefollowinginfmation:4.1.1Quantityofeachsize4.1.2Sizegradeofstr(Table1)4.1.3Classofzinccoating(Section11Table2).4.1.4ASTMdesignationyearofissue.5.Materi

7、alsManufacture5.1Thebasemetalshallbesteelproducedbyanycommerciallyacceptedsteelmakingprocessshallbeofsuchqualitypuritythatwhendrawntothesizeofwirespecifiedcoatedwithzincthefinishedstrwillhavethepropertiesacteristicspresc

8、ribedinthisspecification.5.2TheslabzincwhenusedfthecoatingshallbeanygradeofzincconfmingtoSpecificationB6.6.String6.1Thestrshallhavealeftlaywithaunifmpitchofnotmethan16timesthenominaldiameterofthestr.Aleftlayisdefinedasac

9、ounterclockwisetwistawayfromtheobserver.Stringshallbesufficientlyclosetoensurenosignificantreductionindiameterwhenstressedto10%oftheminimumbreakingstrength.7.PrefmingStr7.1Prefmedstrshallbesuppliedwhensospecifiedbythepur

10、chaser.Strisprefmedwhenthecomponentwiresaresettothehelicalfmwhichtheyassumeintheproductbyanymeansofprocessotherthanbymerelylayingthemaboutthestrce.8.BreakingStrengthWeight8.1Theapproximateweightperunitlengthofstrtheminim

11、umbreakingstrengthofthefinishedstrshallbeasspecifiedinTable1.8.2Atestinwhichthebreakingstrengthisbelowtheminimumspecifiedwhichmayhavebeencausedbytheslippingofthespecimeninthejawsofthetestingmachinebybreakingwithinthejaws

12、within1in.(25.4mm)ofthejawsbytheimpropersocketingofaspecimenshallbedisregardedanothersamplefromthesamecoilreelshallbetested.9.Elongation9.1Theelongationofthestrin24in.(610mm)determinedasspecifiedin9.2shallbenotlessthan5%

13、fthehighstrengthfthe5?16in.(7.94mm)3wireutilitiesgrades4%ftheextrahighstrengthfthe?in.(9.52mm)7wireUtilitiesgrades.9.2Theelongationshallbemeasuredasthepercentageincreaseinseparationbetweenthejawsofthetestingmachine1Thiss

14、pecificationisunderthejurisdictionofASTMCommitteeA05onMetallicCoatedIronSteelProductsisthedirectresponsibilityofSubcommitteeA05.12onWireSpecifications.CurrenteditionapprovedAug.12014.PublishedSeptember2014.iginallyapprov

15、edin1952.Lastpreviouseditionapprovedin2009asA363–03(2009)ε1.DOI:10.1520A036303R14.Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates117.Inspection17.1Themanufacturershallaffdthei

16、nspectrepresentingthepurchaserallreasonablefacilitiestosatisfyhimthatthematerialisbeingfurnishedinaccdancewiththisspecification.Alltestsinspectionshallbemadeonthefinishedstrattheplaceofmanufacturepritoshipmentshallbesoco

17、nductedasnottointerfereunnecessarilywiththeoperationofthewks.18.Rejection18.1Incasethereisareasonabledoubtinthefirsttrialastothefailureofthewirestrtomeetanyrequirementofthisspecificationtwoadditionaltestsshallbemadeonsam

18、plesofwirestrfromthesamecoilreeliffailureoccursineitheroftheseteststhestrshallberejected.19.PackagingPackageMarking19.1Thecompletedstrshallbefurnishedonreelssufficientlysturdytowithstnmalserviceincidenttoshippinghaulingf

19、ielderection.19.2Thecompletedstrshallbefurnishedinromlengths.Atleast95%ofthelengthsshallbewithintheminimummaximumlimitsshowninTable3.Notmethan5%ofatotallengthderedmaybefurnishedinlengthswhicharebelowtheminimumlimitsshown

20、inTable3butwhicharenotlessthan1500ft(457m)long.Eachreelshallbeclearlymarkedtoshowthelengthofthestrcontainedthereon.19.3Eachreelshallhaveastrongtagsecurelyfastenedtoitshowingthenameofthematerial“groundwirestr”thelengthsiz

21、egradeofthestrclassofcoatingASTMSpecificationA363thenamemarkofthemanufacturer.20.Keywds20.1coatedoverheadstrsteelwirestrzinccoatedoverheadstrASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedi

22、nconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrightstheriskofinfringementofsuchrightsareentirelytheirownresponsibility.Thisstardissubjecttorevi

23、sionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfiveyearsifnotrevisedeitherreapprovedwithdrawn.YourcommentsareinvitedeitherfrevisionofthisstardfadditionalstardsshouldbeaddressedtoASTMInternationalHeadqu

24、arters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommitteewhichyoumayattend.IfyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStardsatt

25、headdressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959UnitedStates.Individualreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycontactingASTMattheaboveaddr

26、essat6108329585(phone)6108329555(fax)(email)throughtheASTMwebsite(www.astm.g).PermissionrightstophotocopythestardmayalsobesecuredfromtheCopyrightClearanceCenter222RosewoodDriveDanversMA01923Tel:(978)6462600TABLE3RangeofS

27、trLengthsperReelfatLeast95%oftheCompletedStrNominalDiameterofStrin.(mm)NumberofWiresinStrLengthinFeet(metres)ofStrPerReelfatLeast95%ofthederMinMax5?16(7.94)34700(1430)7900(2410)5?16(7.94)74800(1460)7700(2350)A3?8(9.52)73

28、600(1100)5800(1770)A7?16(11.11)74700(1430)7900(2410)1?2(12.7)73600(1100)6100(1860)APurchasersmayprocuremaximumlengthsupto12000ft(3660m)f5?16in.(7.94mm)diameterstrupto9400ft(2860m)f3?8in.(9.52mm)diameterstr.A363?03(2014)3

溫馨提示

  • 1. 本站所有資源如無(wú)特殊說(shuō)明，都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
  • 2. 本站的文檔不包含任何第三方提供的附件圖紙等，如果需要附件，請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
  • 3. 本站RAR壓縮包中若帶圖紙，網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽，若沒有圖紙預(yù)覽就沒有圖紙。
  • 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
  • 5. 眾賞文庫(kù)僅提供信息存儲(chǔ)空間，僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理，對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯，并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
  • 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容，請(qǐng)與我們聯(lián)系，我們立即糾正。
  • 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。

評(píng)論

0/150

提交評(píng)論