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1、SpecificationforRotaryDrillStemElementsAPISPECIFICATION7FORTIETHEDITION,NOVEMBER2001EFFECTIVEDATE:MARCH2002COPYRIGHTAmericanPetroleumInstituteLicensedbyInformationHandlingServicesCOPYRIGHTAmericanPetroleumInstituteLicensedbyInformationHandlingServicesSpecific
2、ationforRotaryDrillStemElementsUpstreamSegmentAPISPECIFICATION7FORTIETHEDITION,NOVEMBER2001EFFECTIVEDATE:MARCH2002COPYRIGHTAmericanPetroleumInstituteLicensedbyInformationHandlingServicesSPECIALNOTESAPIpublicationsnecessarilyaddressproblemsofageneralnature.W
3、ithrespecttopartic-ularcircumstances,local,state,andfederallawsandregulationsshouldbereviewed.APIisnotundertakingtomeetthedutiesofemployers,manufacturers,orsupplierstowarnandproperlytrainandequiptheiremployees,andothersexposed,concerninghealthandsafetyrisks
4、andprecautions,norundertakingtheirobligationsunderlocal,state,orfederallaws.Informationconcerningsafetyandhealthrisksandproperprecautionswithrespecttopar-ticularmaterialsandconditionsshouldbeobtainedfromtheemployer,themanufacturerorsupplierofthatmaterial,or
5、thematerialsafetydatasheet.NothingcontainedinanyAPIpublicationistobeconstruedasgrantinganyright,byimplicationorotherwise,forthemanufacture,sale,oruseofanymethod,apparatus,orprod-uctcoveredbyletterspatent.Neithershouldanythingcontainedinthepublicationbecon-s
6、truedasinsuringanyoneagainstliabilityforinfringementofletterspatent.Generally,APIstandardsarereviewedandrevised,reafÞrmed,orwithdrawnatleasteveryÞveyears.Sometimesaone-timeextensionofuptotwoyearswillbeaddedtothisreviewcycle.Thispublicationwillnolongerbeinef
7、fectÞveyearsafteritspublicationdateasanoperativeAPIstandardor,whereanextensionhasbeengranted,uponrepublication.StatusofthepublicationcanbeascertainedfromtheAPIUpstreamSegment[telephone(202)682-8000].AcatalogofAPIpublicationsandmaterialsispublishedannuallyan
8、dupdatedquar-terlybyAPI,1220LStreet,N.W.,Washington,D.C.20005.ThisdocumentwasproducedunderAPIstandardizationproceduresthatensureappropri-atenotiÞcationandparticipationinthedevelopmentalprocessandisdesi
