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1、PipelineValvesAPISpecification6D--`,,,```-`-`,,`,,`,`,,`---Twenty-secondEdition,January2002ISO14313:1999,MOD,Petroleumandnaturalgasindustries—Pipelinetransportationsystems—PipelinevalvesEFFECTIVEDATE:JULY1,2002PROPOSEDNATIONALADOPTIONINCLUDESANNEXF,MARCH1,2005Copyr
2、ightAmericanPetroleumInstituteReproducedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResale--`,,,```-`-`,,`,,`,`,,`---CopyrightAmericanPetroleumInstituteReproducedbyIHSunderlicensewithAPINoreproductionornetworkingpermittedwi
3、thoutlicensefromIHSNotforResaleÓAmericanPetroleumInstituteAPIStandard6D/ISO14313:1999SPECIALNOTESAPIpublicationsnecessarilyaddressproblemsofageneralnature.Withrespecttoparticularcircumstances,local,state,andfederallawsandregulationsshouldbereviewed.APIisnotundertak
4、ingtomeetthedutiesofemployers,manufacturers,orsupplierstowarnandproperlytrainandequiptheiremployees,andothersexposed,concerninghealthandsafetyrisksandprecautions,norundertakingtheirobligationsunderlocal,state,orfederallaws.Informationconcerningsafetyandhealthrisksa
5、ndproperprecautionswithrespecttoparticularmaterialsandconditionsshouldbeobtainedfromtheemployer,themanufacturerorsupplierofthatmaterial,orthematerialsafetydatasheet.NothingcontainedinanyAPIpublicationistobeconstruedasgrantinganyright,byimplicationorotherwise,forthe
6、manufacture,sale,oruseofanymethod,apparatus,orproductcoveredbyletterspatent.Neithershouldanythingcontainedinthepublicationbeconstruedasinsuringanyoneagainstliabilityforinfringementofletterspatent.Generally,APIstandardsarereviewedandrevised,reaffirmed,orwithdrawnatl
7、easteveryfiveyears.Sometimesaone-timeextensionofuptotwoyearswillbeaddedtothisreviewcycle.ThispublicationwillnolongerbeineffectfiveyearsafteritspublicationdateasanoperativeAPIstandardor,whereanextensionhasbeengranted,uponrepublication.Statusofthepublicationcanbeasce
8、rtainedfromtheAPIUpstreamSegmenttelephone(202)682-8000.AcatalogofAPIpublicationsandmaterialsispublishedannuallyandupdatedquarterlybyAPI,1220LStre
