GaugingandInspectionofCasing,Tubing,andLinePipeThreadsAPIRECOMMENDEDPRACTICE5B1FIFTHEDITION,OCTOBER1999Addendum1September2004Addendum1toGaugingandInspectionofCasing,Tubing,andLinePipeThreads1Page30,addnewparagraph8.3.6:8.3.6ProcedureforThreadProfileGaugeUseTheThreadProfileTemplateisaprecision-hardenedandgroundthreadtoothformusedtochecktheproductthreadgroove.Placethetemplateintheperfectthreadarea.Thetemplateteethshouldfitinthepinorboxthreadswithoutlateralmovementorinterference(ride-uponflankthreads).Suchindi-cationsofimperfectfitmayindicateaprobleminthethreadform.Rejectionofthethreadshouldnotbemadeuntilthethreadpitch,taper,threadheight,flankangleand/orthreadpro-fileasmeasuredwithathreadcomparatororotherthreadformmeasurementdevicehasver-ifiedthecondition.Page48,addnewFigure63shownonthefollowingpage:2APIRECOMMENDEDPRACTICE5B1—ADDENDUM1Figure63—ThreadProfileGauge09/04AdditionalcopiesareavailablethroughGlobalEngineeringDocumentsat(800)854-7179or(303)397-7956InformationaboutAPIPublications,ProgramsandServicesisavail-ableontheWorldWideWebat:http://www.api.orgProductNo.G05B1A1
