StandardSpecificationfor
Electric-Resistance-WeldedSteelPipe1ThisstandardisissuedunderthefixeddesignationA135;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.
1.Scope*
1.1Thisspecification2coverstwogradesofelectric-resistance-weldedsteelpipeinNPS2toNPS30inclusive,withnominal(average)wallthicknessupto0.500in.(12.70mm),inclusive,andinnominalsizesNPS3⁄4toNPS5inclusivewithnominal(average)wallthickness0.083in.(2.11mm)to0.134in.(3.40mm),dependingonsize.Pipehavingotherdimensions(Note1)maybefurnishedprovidedsuchpipecomplieswithallotherrequirementsofthisspecification.Thepipeisintendedforconveyinggas,vapor,waterorotherliquid;onlyGradeAisadaptedforflangingandbending(Note2).Thesuitabilityofpipeforvariouspurposesissomewhatdependentuponitsdimensions,properties,andconditionsofservice,sothatthepurposeforwhichthepipeisintendedshouldbestatedintheorder.Thepipemaybefurnishedeithernonexpandedorcoldexpandedattheoptionofthemanufac-turer.Whenpipeiscoldexpanded,theamountofexpansionshallnotexceed1.5%oftheoutsidediameterpipesize.
NOTE1—AcomprehensivelistingofstandardizedpipedimensionsiscontainedinASMEB36.10.
NOTE2—ThisprovisionisnotintendedtoprohibitthecoldbendingofGradeBpipe.
1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIvalues,giveninparentheses,areforinformationonly.
2.ReferencedDocuments2.1ASTMStandards:3A370TestMethodsandDefinitionsforMechanicalTestingofSteelProducts
A700PracticesforPackaging,Marking,andLoadingMethodsforSteelProductsforDomesticShipment
A751TestMethods,Practices,andTerminologyforChemicalAnalysisofSteelProducts
A865SpecificationforThreadedCouplings,Steel,BlackandZinc-Coated(Galvanized)WeldedorSeamless,forUseinSteelPipeJoints
A941TerminologyRelatingtoSteel,StainlessSteel,Re-latedAlloys,andFerroalloys
E6TerminologyRelatingtoMethodsofMechanicalTest-ing
E29PracticeforUsingSignificantDigitsinTestDatatoDetermineConformancewithSpecifications
E59PracticeforSamplingSteelandIronforDeterminationofChemicalComposition4E213PracticeforUltrasonicExaminationofMetalPipeandTubing
E273PracticeforUltrasonicExaminationoftheWeldZoneofWeldedPipeandTubing
E309PracticeforEddy-CurrentExaminationofSteelTu-bularProductsUsingMagneticSaturation2.2ANSIStandard:
B1.20.1PipeThreads,GeneralPurpose52.3FederalStandards:
Fed.STDNo.123MarkingforShipments(CivilAgencies)6Fed.STDNo.183ContinuousIdentificationMarkingofIronandSteelProducts62.4MilitaryStandards:
MIL-STD-129MarkingforShipmentandStorage7MIL-STD-163SteelMillProducts,PreparationforShip-mentandStorage72.5ASMEStandard:
B36.10WeldedandSeamlessWroughtSteelPipe5,83.Terminology
3.1Fordefinitionsoftermsrelatingtosteelmanufacturingandproperties,refertoTerminologyA941.
ThisspecificationisunderthejurisdictionofASTMCommitteeA01onSteel,StainlessSteel,andRelatedAlloysandisthedirectresponsibilityofSubcommitteeA01.09onCarbonSteelTubularProducts.
CurrenteditionapprovedMarch1,2005.PublishedMarch2005.Originallyapprovedin1931.Lastpreviouseditionapprovedin2001asA135–01.2ForASMEBoilerandPressureVesselCodeapplications,seerelatedSpecifi-cationSA-135inSectionIIofthatCode.3ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.ForAnnualBookofASTMStandardsvolumeinformation,refertothestandard’sDocumentSummarypageontheASTMwebsite.
1Withdrawn.
AvailablefromAmericanNationalStandardsInstitute,11West42ndSt.,13thFloor,NewYork,NY10036.6AvailablefromGeneralServiceAdministration,Washington,DC20405.7AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700RobbinsAve.,Philadelphia,PA19111–5094.Attn.:NOPD.8AvailablefromASMEInternational,ThreeParkAvenue,NewYork,NY10016–5990.
54*ASummaryofChangessectionappearsattheendofthisstandard.
Copyright©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428-2959,UnitedStates.
1
A135–05
TABLE1TensileRequirements
GradeA
Tensilestrength,min,ksi(MPa)Yieldstrength,min,ksi(MPa)
Elongationin2in.(50mm),min,%:
Forpipehavingaspecifiedwallthicknessof5⁄16in.(7.9mm)ormore,iftestedusingalongitudinalstriptestspecimen.
Forpipehavingaspecifiedwallthicknessoflessthan5⁄16in.(7.9mm),iftestedusingalongitudinalstriptestspecimen.
Forpipeofanysize,iftestedusingafull-sizelongitudinaltestspecimen.
AGradeB60(414)35(241)30
B48(331)30(207)35
A3530
Theminimumelongationshallbedeterminedbythefollowingequation,withthecalculatedvalueroundedtothenearestpercent:
E556t116.5
where:
E=elongationin2in.(50mm),minimum,%,andt=specifiedwallthickness,in.
BTheminimumelongationshallbedeterminedbythefollowingequation,withthecalculatedvalueroundedtothenearestpercent:
E548t114
where:
E=elongationin2in.(50mm),minimum,%,andt=specifiedwallthickness,in.
3.2Fordefinitionsoftermsrelatingtomechanicaltesting,refertoTerminologyE6.
3.3DefinitionsofTermsSpecifictoThisStandard:
3.3.1burr,n—aroughorsharpedgeleftonpipeendsbycuttingorsawing.
3.3.2lot,n—allpipeofthesamesize,wallthicknessandrolledlengththatisproducedfromthesameheatofsteelandsubjecttothesameheattreatment.
3.3.3blackthread,n—athreadcreaseexhibitingtheorigi-nalpipesurfaceaftermachining.
4.OrderingInformation
4.1Ordersformaterialunderthisspecificationshouldincludethefollowing,asrequired,todescribethedesiredmaterialadequately:
4.1.1Quantity(feetornumberoflengths),
4.1.2Nameofmaterial(electric-resistance-weldedpipe),4.1.3Specificationdesignationandyearofissue,4.1.4Grade(seeTable1),
4.1.5Size(nominalsize,oroutsidediameter;andnominalwallthickness),
4.1.6Length(specificorrandom,see12.4),4.1.7Endfinish(plainorthreaded,see13.2),4.1.7.1Threadedandcoupled,ifspecified,4.1.7.2Threadsonly,ifspecified,4.1.7.3Plainend,ifspecified,
4.1.8Alternativeelectrictest(seeSection11),4.1.9Tensiontestspecimen(seeSection15),4.1.10Heatanalysis,ifrequired(see6.1),
4.1.11Certificateofcompliance,ifrequired(seeSection19),and
4.1.12Specialrequirements.
5.Manufacture
5.1Thesteelshallbemadebyeitherorbothofthefollowingprocesses:basic-oxygenorelectric-furnace.
5.2Steelmaybecastiningotsormaybestrandcast.Whensteelsofdifferentgradesaresequentiallystrandcast,identifi-2
cationoftheresultanttransitionmaterialisrequired.Theproducershallremovethetransitionmaterialbyanyestab-lishedprocedurethatpositivelyseparatesthegrades.
5.3Thepipeshallbemanufacturedfromflatrolledsteelinindividuallengthsorincontinuouslengthbyelectric-resistanceorelectric-inductionweldingwithouttheadditionofextrane-ousmaterial.
5.4Theweldseamofelectric-resistanceweldedpipetoGradeBpipeshallbeheattreatedafterweldingtoaminimumtemperatureof1000°F(540°C)orprocessedinsuchamannerthatnountemperedmartensiteremains.
6.ChemicalComposition
6.1ThesteelshallconformtotherequirementsprescribedinTable2,basedontheheatanalysis.Whenspecifiedintheorder,theheatanalysesshallbereportedtothepurchaserorarepresentativeofthepurchaser.
7.ProductAnalysis
7.1Ananalysismaybemadebythepurchaseronsamplesofpipeselectedatrandomandshallconformtotherequire-mentsspecifiedinTable2.MethodsandPracticesrelatingtochemicalanalysisshallbeinaccordancewithTestMethod,Practices,andTerminologyA751.
8.MechanicalPropertiesRequirements8.1TensileProperties:
8.1.1ThematerialshallconformtotherequirementsastotensilepropertiesprescribedinTable1.
8.1.2Theyieldstrengthshallbedeterminedbytheoffsetmethodutilizing0.2%ofthegagelengthorbythetotalextensionunderloadmethodusing0.5%ofthegagelength.8.1.3Longitudinaltestspecimensshallbefull-sizelongitu-dinaltestspecimens(seeFigureA2.1ofTestMethodsandDefinitionsA370)orlongitudinalstriptestspecimens(seeSpecimenNo.4inFig.A2.3ofTestMethodsandDefinitionsA370).
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TABLE2ChemicalRequirements
Composition,max,%
Element
CarbonManganesePhosphorusSulfur
GradeA0.250.950.0350.035
GradeB0.301.200.0350.035
S=allowablefiberstress18000psi(124MPa)forGrade
Aand21000psi(144MPa)forGradeB.Thisdoesnotprohibittestingathigherpressureatthemanufac-turer’soption,
t=specifiedwallthickness,in.,andD=specifiedoutsidediameter,in.
Plainendpipemaybetestedatthediscretionofthemanufacturerinsinglelengthsorinmultiplelengths.
10.2Thehydrostaticpressureshallbemaintainedfornotlessthan5s.
10.3Whenspecifiedintheorder,pipemaybefurnishedwithouthydrostatictesting,andeachlengthsofurnishedshallincludewiththemandatorymarkingtheletters“NH.”
NOTE3—Thisprovisionisnotintendedtoapplytolightwall(Schedule10)pipelistedinTableX1.1.
8.2Thetestspecimentakenacrosstheweldshallshowatensilestrengthnotlessthantheminimumtensilestrengthspecifiedforthegradeofpipeordered.ThistestwillnotberequiredforpipeunderNPS8.
9.FlatteningTest
9.1Aspecimenatleast4in.(102mm)inlengthshallbeflattenedcoldbetweenparallelplatesinthreestepswiththeweldlocatedeither0°or90°fromthelineofdirectionofforceasrequiredin9.2.Duringthefirststep,whichisatestforductilityoftheweld,nocracksorbreaksontheinsideoroutsidesurfacesshalloccuruntilthedistancebetweentheplatesislessthantwothirdsoftheoriginaloutsidediameterofthepipe.Asasecondstep,theflatteningshallbecontinued.Duringthesecondstep,whichisatestforductilityexclusiveoftheweld,nocracksorbreaksontheinsideoroutsidesurfacesshalloccuruntilthedistancebetweentheplatesislessthanonethirdoftheoriginaloutsidediameterofthepipebutisnotlessthanfivetimesthewallthicknessofthepipe.Duringthethirdstep,whichisatestforsoundness,theflatteningshallbecontinueduntilthespecimenbreaksortheoppositewallsofthepipemeet.Evidenceoflaminatedorunsoundmaterialorofincompleteweldthatisrevealedduringtheentireflatteningtestshallbecauseforrejection.
9.2Forpipeproducedinsinglelengths,theflatteningtestspecifiedin9.1shallbemadeonbothcropendscutfromeachlengthofpipe.Thetestsfromeachendshallbemadealternatelywiththeweldat0°andat90°fromthelineofdirectionofforce.Forpipeproducedinmultiplelengths,theflatteningtestshallbemadeoncropendsrepresentingthefrontandbackofeachcoilwiththeweldat90°fromthelineofdirectionofforce,andontwointermediateringsrepresentingeachcoilwiththeweld0°fromthelineofdirectionofforce.9.3Surfaceimperfectionsinthetestspecimenbeforeflat-tening,butrevealedduringthefirststepoftheflatteningtest,shallbejudgedinaccordancewiththefinishrequirementsinSection13.
9.4Superficialcracksasaresultofsurfaceimperfectionsshallnotbecauseforrejection.
10.HydrostaticTest
10.1Exceptasprovidedforin10.3,eachlengthofpipeshallbehydrostaticallytestedatthemill,withoutleakagethroughthewall,toapressurecalculatedfromthefollowingEq1:
P52St/D
(1)
10.4Whencertificationisrequiredbythepurchaserandthehydrostatictesthasbeenomitted,thecertificationshallclearlystate“NotHydrostaticallyTested.”Thespecificationnumberandmaterialgrade,asshownonthecertification,shallbefollowedbytheletters“NH.”
11.NondestructiveExaminationRequirements
11.1Asanalternatetothehydrostatictest,andwhenacceptedbythepurchaser,eachpipeshallbetestedwithanondestructiveelectrictestinaccordancewithPracticeE213,PracticeE273,orPracticeE309.Itistheintentofthistesttorejectpipecontainingdefects.
11.2Recognizedmethodsformeetingthistestareelectro-magnetic(eddycurrent)orultrasonic.
11.3Thefollowinginformationisforthebenefitoftheuserofthisspecification:
11.3.1Theultrasonicexaminationreferredtointhisspeci-ficationisintendedtodetectlongitudinalimperfectionshavingareflectiveareasimilartoorlargerthanthereferencenotch.Theexaminationmaynotdetectcircumferentiallyorientedimperfectionsofshort,deepimperfections.
11.3.2Theeddy-currentexaminationreferencedinthisspecificationhasthecapabilityofdetectingsignificantimper-fections,especiallyoftheshort,abrupttype.
11.3.3ThehydrostatictestreferredtoinSection10isatestmethodprovidedforinmanyproductspecifications.Thistesthasthecapabilityoffindingimperfectionsofasizepermittingthetestfluidtoleakthroughthetubewallandmaybeeithervisuallyseenordetectedbyalossofpressure.Thistestmaynotdetectverytight,through-the-wallimperfectionsorimper-fectionsthatextendanappreciabledistanceintothewallwithoutcompletepenetration.
11.3.4Apurchaserinterestedinascertainingthenature(type,size,location,andorientation)ofimperfectionsthatcanbedetectedinthespecificapplicationoftheseexaminationsshoulddiscussthiswiththemanufacturerofthetubularproduct.
11.4Inordertoaccommodatethevarioustypesofnonde-structiveelectrictestingequipmentandtechniquesinuse,thecalibrationpipeshallcontain,attheoptionoftheproducer,anyoneormoreofthefollowingdiscontinuitiestoestablishaminimumsensitivitylevelforrejection:
3
where:
P=minimumhydrostatictestpressure,psi,(MPa).The
testpressureneednotexceed2500psi(17.24MPa),
A135–05
11.4.1DrilledHole—Aholenotlargerthan0.031-in.(0.8-mm)diametershallbedrilledradiallyandcompletelythroughpipewall,preferablyintheweldarea,carebeingtakentoavoiddistortionofthepipewhiledrilling.
11.4.2TransverseTangentialNotch—Anotchshallbefiledormilledtangentialtothesurfaceandtransversetothelongitudinalaxisofthepipepreferablyintheweldarea.Saidnotchshallhaveadepthnotexceeding12.5%ofthenominalwallthicknessofthepipeor0.004in.,(0.10mm),whicheverisgreater.
11.4.3LongitudinalNotch—Anotch0.031in.(0.8mm)orlessinwidthshallbemachinedinaradialplaneparalleltothepipeaxisontheoutsidesurfaceofthepipepreferablyintheweldarea,tohaveadepthnotexceeding12.5%ofthenominalwallthicknessofthepipeor0.004in.(0.10mm),whicheverisgreater.
11.5Pipeproducingasignalequaltoorgreaterthanthecalibrationimperfectionshallberejected.
12.Dimensions,Weight,andPermissibleVariations12.1Weight—TheweightofanylengthofpipeotherthanSchedule10shallnotvarymorethan3.5%underor10%overthatspecified,butthecarloadweightshallbenotmorethan1.75%underthenominalweight.TheweightofpipefurnishedtoSchedule10shallnotvarymorethan610%fromthatcalculatedusingtheweight(mass)perunitlengthprescribedinAppendixTableX1.1.TheweightofthepipeshallbecalculatedfromtherelevantequationinASMEB36.10andwithaconstantof10.69ratherthan10.68.
NOTE4—AsystemofstandardpipesizeshasbeenapprovedbytheAmericanNationalStandardsInstituteasAmericanNationalStandardforWeldedandSeamlessWroughtSteelPipe(ASMEB36.10).
12.2Diameter—Theoutsidediametershallnotvarymorethan61%fromthenominalsizespecified.
12.3MinimumWallThickness—Theminimumwallthick-nessatanypointshallbenotmorethan12.5%underthespecifiedwallthickness.
NOTE5—TheminimumwallthicknessoninspectionisshowninTableX1.2oftheAppendix.
12.4Lengths:
12.4.1Exceptasallowedin12.4.2,pipeshallbefurnishedinlengthsaveraging38ft(11.6m)orover,withaminimumlengthof20ft(6.1m),butnomorethan5%maybeunder32ft(9.8m).Jointersmadebyweldingarepermissible.Whenthreadedpipeisordered,jointersshallbemadebythreadedconnectionsandshallnotexceed5%oftheorder.
12.4.2Unlessotherwisespecified,Schedule10pipeshallbebetween16and22ft(4.9and6.7m)foraminimumof90%ofthefootagefurnished,withanybalancebeingshorterlengthsatleast8ft(2.4m)long.
13.Workmanship,Finish,andAppearance
13.1Thefinishedpipeshallbereasonablystraightandfreeofdefects.Surfaceinperfectionsinexcessof12.5%ofthenominalwallthicknessshallbeconsidereddefects.13.2EndFinish:
4
13.2.1Schedule10Pipe—PipefurnishedtoSchedule10shallbeplainendonly.Allinsideandoutsidecuttingburrsshallberemoved.Thisgenerallyinvolvesbreakingthecorners.13.2.2Ends,PlainEndPipe—Unlessotherwisespecified,plainendpipeforusewiththeDresserorDaytontypecouplingshallbereamedbothoutsideandinsidesufficientlytoremoveallburrs.Plainendpipeforweldingshallbebeveledontheoutsidetoanangleof30°withatoleranceof+5°and–0°andwithawidthofflatattheendofthepipeof1⁄16+/–1⁄32in.(1.6+/–0.8mm).Whenmaterialisorderedbeveledtoanyotherthana30°angle,itshouldbeunderstoodthattheangleistobemeasuredfromalinedrawnperpendiculartotheaxisofthepipe.Thismeansthatagreateramountofmaterialisremovedwitha60°anglethanwitha30°angle.Pipeshallbesufficientlyfreefromindentations,projections,orrollmarksforadistanceof8in.(203mm)fromtheendofthepipetomakeatightjointwiththerubbergaskettypeofcoupling.AllplainendpipeintendedforDresserorDaytontypejointsorforwelding,sizesNPS10andsmallerinoutsidediameterspeci-fied,shallbenotmorethan1⁄32in.(0.8mm)smallerthantheoutsidediameterspecifiedforadistanceof8in.(203mm)fromtheendsofthepipeandshallpermitthepassingforadistanceof8in.(203mm)ofaringgagethathasabore1⁄16in.(1.6mm)largerthantheoutsidediameterspecifiedofthepipe.SizeslargerthanNPS10shallbenotmorethan1⁄32in.(0.8mm)smallerthanthenominaloutsidediameterforadistanceof8in.(203mm)fromtheendofthepipeandshallpermitthepassingforadistanceof8in.(203mm)ofaringgagewhichhasabore3⁄32in.(2.4mm)largerthanthenominaloutsidediameterofthepipe.
13.2.3Ends,ThreadedPipe—Eachendofthreadedpipeshallbereamedtoremoveallburrs.AllthreadsshallbeinaccordancewiththeAmericanNationalStandardPipeThreads(Note6)andcutsoastomakeatightjointwhenthepipeistestedatthemilltothespecifiedinternalhydrostaticpressure.Thevariationfromthestandard,whentestedwiththestandardworkinggage,shallnotexceedoneandone-halfturnseitherway.Pipeshallnotberoundedbyhammeringinordertogetafullthread.Thereshallbenotmorethantwoblackthreadsfor3⁄4-in.(19.0-mm)taperamongtheperfectthreads.Blackthreadsshouldnotbeconfusedwithimperfectthreads,suchasthosetorn,shaven,orbroken.
NOTE6—AcompletedescriptionoftheAmericanNationalStandardPipeThreadsapplicabletopipe,valves,andfittingsiscontainedintheAmericanNationalStandardforPipeThreads(ANSIB1.20.1);also“Screw-ThreadStandardsforFederalServices,1942,”NationalBureauofStandardsHandbookH28,January,1942,thepertinentdatainbothsourcesbeingidentical.
13.3Couplings—EachlengthofthreadedpipeshallbeprovidedwithonecouplingmanufacturedinaccordancewithSpecificationA865exceptthatthecouplingmaybewroughtiron(Note7).Threadsshallbecutsoastomakeatightjoint.Taper-tappedcouplingsshallbefurnishedonallweightsofthreadedpipeNPS21⁄2andlarger.
NOTE7—ForsizesNPS2andsmaller,itiscommercialpracticetofurnishstraight-tappedcouplingsforstandard-weight(Schedule40)pipeandtaper-tappedcouplingsforextra-strong(Schedule80)anddouble-extra-strongpipe.Iftaper-tappedcouplingsarerequiredforsizesNPS2
A135–05
andsmalleronstandardweight(Schedule40)pipe,linepipeinaccor-dancewithSpecification5LoftheAmericanPetroleumInstituteshouldbeordered,threadlengthstobeinaccordancewiththeAmericanNationalStandardforPipeThreads(ANSIB1.20.1).Taper-tappedcouplingsforsizesNPS2andsmallerinstandardweightmaybeusedonmill-threadedstandardweighttypeofthesamesize.
15.4.1Eachlengthofpipeshallbesubjectedtothehydro-statictestspecifiedinSection10.
16.Test,Retest,andResampling16.1ChemicalAnalysis:
16.1.1IftheresultsoftheanalysisofeitherlengthofpipedoesnotconformtotherequirementsspecifiedinSection7,analysesoftwoadditionallengthsfromthesamelotshallbemade,eachofwhichshallconformtotherequirementsspecified.
16.2TensionTest:
16.2.1ThetestspecimensandthetestsrequiredbythisspecificationshallconformtothosedescribedinTestMethodsandDefinitionsA370,exceptthatallspecimensshallbetestedatroomtemperature.
16.2.2Thelongitudinaltensiontestspecimenshallbetakenfromtheendofthepipe,orbyagreementbetweenthemanufacturerandthepurchasermaybetakenfromtheskelp,atapointapproximately90°fromtheweld,andshallnotbeflattenedbetweengagemarks.Thesidesofeachspecimenshallbeparallelbetweengagemarks.Atthemanufactureroption,thetensiontestmaybemadeonfullsectionofpipe.
16.2.3Transverseweldtestspecimensshallbetakenwiththeweldatthecenterofthespecimen.Transversebodytestspecimensshallbetakenoppositetotheweld.Alltransversetestspecimensshallbeapproximately11⁄2in.(38.1mm)wideinthegagelengthandshallrepresentthefullwallthicknessofthepipefromwhichthespecimenwascut.
16.2.4Ifanytestspecimenshowsdefectivemachiningordevelopsflawsnotassociatedwiththequalityofthesteelorthewelding,itmaybediscardedandanotherspecimensubstituted.16.2.5Iftheresultsofthetensiontestsofanylotdonotconformtotherequirementsspecifiedin9.1,retestsoftwoadditionallengthsfromthesamelotshallbemade,eachofwhichshallconformtotherequirementsspecified.
16.2.6Ifthepercentageofelongationofanytensiontestspecimenislessthanthatspecifiedin8.1,andanypartofthefractureismorethan3⁄4-in.(19.0-mm)fromthecenterofthegagelengthasindicatedbyscribescratchesmarkedonthespecimenbeforetesting,thespecimenmaybediscardedandanothersubstituted.16.3FlatteningTest:
16.3.1Specimensforflatteningtestsshallbesmoothattheendsandfreefromburrs.
16.3.2Ifanysectionofthepipefailstocomplywiththerequirementsof9.1,forpipeproducedinsinglelengths,othersectionsmaybecutfromthesameendofthesamelengthuntilsatisfactorytestsareobtained,exceptthatthefinishedpipeshallnotbeshorterthan80%ofitslengthaftertheinitialcropping;otherwise,thelengthshallberejected.Forpipeproducedinmultiplelengths,retestsmaybecutfromeachendofeachindividuallengthinthemultiple;suchtestsshallbemadewiththeweldalternately0°and90°fromthelineofdirectionofforce.
16.4Allspecimensshallbetestedatroomtemperature.17.Inspection
17.1Theinspectorrepresentingthepurchasershallhavefreeentry,atalltimeswhileworkonthecontractofthe
5
13.4ProtectiveCoating:
13.4.1Afterthepipehasbeensubjectedtothehydrostatictest,andifrequiredbythepurchaser,itshallbethoroughlycleanedofalldirt,oil,grease,loosescale,andrust;thendried,andgivenaprotectivecoatingofthekindandinthemannerspecifiedbythepurchaser.PipefurnishedtoSchedule10shallbenormallyshippedwithalightcoatingofprocessingoil.Ifsospecified,thepipecanbegivenamillcoatingoraspecialcoating.
14.WeldRepair
14.1WeldingRepair—
14.2Defectsinthepipewall,providedtheirdepthdoesnotexceedonethirdthespecifiedwallthickness,shallberepairedbyelectricwelding.Defectsintheweldssuchassweatsorleaks,unlessotherwisespecified,shallberepairedorthepiecerejectedattheoptionofthemanufacturer.Repairsofthisnatureshallbemadebycompletelyremovingthedefect,cleaningthecavity,andthenelectricwelding.
14.3AllrepairedpipeshallberetestedhydrostaticallyinaccordancewithSection10.
15.Sampling
15.1ChemicalAnalysis:
15.1.1Samplesforchemicalanalysis,exceptforspectro-chemicalanalysis,shallbetakeninaccordancewithPracticeE59.Thenumberofsamplesshallbedeterminedasfollows:
NPS
Under66to20,inclOver20to30,incl
NumbersofSamplesSelected2fromeachlotof400pipesorfraction
thereof
2fromeachlotof200pipesorfraction
thereof
2fromeachlotof100pipesorfraction
thereof
15.2TensionTest:
15.2.1Onelongitudinaltensiontestshallbemadeonlength(Note8)fromeachlotof400lengthsorfractionthereofofeachsizeunderNPS8andonetransversebodyandonetransverseweldtensiontestononelengthfromeachlotof200lengthsorfractionthereofofeachsizeNPS8toNPS20andononelengthfromeachlotof100lengthsorfractionthereofofeachsizeoverNPS20toNPS30.Whentakenfromtheskelp,thenumberoftestsshallbedeterminedinthesamemanneraswhentakenfromthefinishedpipe.
NOTE8—Lengthisdefinedasthelengthasordered,exceptthatinthecaseofordersforcutlengthsshorterthandoublerandom,whichisdefinedasthelengthasrolled,priortocuttingtotherequiredshortlengths.
15.3FlatteningTest:
15.3.1Theflatteningtestspecifiedin9.1shallbemadeonbothcropendscutfromeachlengthofpipe.Whenpipeisproducedinmultiplelengths,flatteningtestsarerequiredonthecropendsfromthefrontandbackendsofeachcoilandontwointermediateringsrepresentingeachcoil.15.4HydrostaticTest:
A135–05
purchaserisbeingperformed,toallpartsofthemanufacturer’sworksthatconcernthemanufactureofthematerialordered.Themanufacturershallaffordtheinspector,withoutcharge,allreasonablefacilitiestosatisfyhimthatthematerialisbeingfurnishedinaccordancewiththisspecification.Alltests(exceptcheckanalysis)andinspectionshallbemadeattheplaceofmanufacturepriortoshipment,unlessotherwisespecified,andshallbesoconductedasnottointerfereunnecessarilywiththemanufacturer’soperation.18.Rejection
18.1Eachlengthofpipereceivedfromthemanufacturermaybeinspectedbythepurchaserand,ifitdoesnotmeettherequirementsofthisspecificationbasedontheinspectionandtestmethodasoutlinedinthespecification,thelengthmayberejectedandthemanufacturershallbenotified.Dispositionofrejectedpipeshallbeamatterofagreementbetweenthemanufacturerandthepurchaser.
18.2Pipefoundinfabricationorininstallationtobeunsuitablefortheintendeduse,underthescopeandrequire-mentsofthisspecification,maybesetasideandthemanufac-turernotified.Suchpipeshallbesubjecttomutualinvestiga-tionastothenatureandseverityofthedeficiencyandtheformingorinstallation,orboth,conditionsinvolved.Disposi-tionshallbeamatterforagreement.19.CertificateofCompliance
19.1Whenspecifiedinthepurchaseorder,theproducerorsuppliershallfurnishtothepurchaseracertificateofcompli-ancestatingthatthepipehasbeenmanufactured,sampled,
testedandinspectedinaccordancewiththisspecification(includingtheyearofissue)andhasbeenfoundtomeettherequirements.
20.IdentificationofMaterial
20.1Eachlengthofpipeshallbelegiblymarkedwithappropriatesymbolsbystenciling,stamping,orrollingtoshowthemanufacturer’sname,thesize,thespecificationdesigna-tion,thegrade,andthehydrostatictestpressurewhentested,ortheletters“NH”whennottested.
20.2Inadditiontotherequirementsin20.1,barcodingisacceptableasasupplementalidentificationmethod.Thepur-chasermayspecifyintheorderaspecificbarcodingsystemtobeused.
21.Packaging,Marking,andLoadingforShipment
21.1Whenspecifiedonthepurchaseorder,packaging,marking,andloadingforshipmentshallbeinaccordancewithPracticesA700.
21.2Whenspecifiedinthecontractorpurchaseorder,thematerialshallbepreserved,packaged,andpackedinaccor-dancewithMIL-STD163.Theapplicablelevelsshallbeasspecifiedinthecontract.MarkingforshipmentofsuchmaterialshallbeinaccordancewithFed.Std.No.123forcivilagenciesandMIL-STD129orFed.Std.No.183ifcontinuousmarkingisrequiredformilitaryagencies.
22.Keywords
22.1eddycurrenttesting;electricresistanceweldedpipe;hydrostatictesting;plainendpipe;Schedule10pipe;threadedpipe
APPENDIX
(NonmandatoryInformation)X1.ADDITIONALDATA
X1.1AdditionaldataondimensionsnominalweightsandtestpressuresisprovidedinTableX1.1.X1.2AdditionaldataonwallthicknessesareprovidedinTableX1.2.
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A135–05
TABLEX1.1Dimensions,NominalWeights,andTestPressuresforLightWallSteelPipe
Schedule10
OutsideDiameter,in.
(mm)1.050(26.7)1.315(33.4)1.660(42.2)1.900(48.3)2.375(60.3)2.875(73.0)3.500(88.9)4.000(101.6)4.500(114.3)5.563(141.3)
SpecifiedWallThicknessAin.(mm)0.083(2.11)0.109(2.77)0.109(2.77)0.109(2.77)0.109(2.77)0.120(3.05)0.120(3.05)0.120(3.05)0.120(3.05)0.134(3.40)
Weight(Mass)PerUnitLengthlb/ft(kg/m)0.86(1.28)1.41(2.09)1.81(2.69)2.09(3.11)2.64(3.93)3.53(5.26)4.34(6.46)4.98(7.41)5.62(8.37)7.78(11.58)
TestPressure,psi(MPa)ANPSGradeAGradeB
⁄111⁄411⁄2221⁄2331⁄2342500(17.24)2500(17.24)2400(16.55)2100(14.48)1700(11.72)1500(10.34)1200(8.27)1000(6.89)900(6.21)850(5.86)
2500(17.24)2500(17.24)2500(17.24)2400(16.55)1900(13.10)1700(11.72)1400(9.65)1200(8.27)1100(7.58)1000(6.89)
45
AThetestpressuresarecalculatedbythefollowingequation(butneednotexceed2500psior17.24MPa):
P52St/D
where:P=S=t=D=
pressure,psi(MPa),
fiberstress60%ofthespecifiedminimumyieldstrength,psi(MPa),specifiedwallthickness,in.(mm),andspecifiedoutsidediameter,in.(mm).
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A135–05
TABLEX1.2MinimumPermissibleWallThicknessonInspection
NOTE1—Thefollowingequation,uponwhichthistableisbased,isusedtoderivetheminimumpermissiblewallthicknessvaluesfromthespecifiedwallthicknessvalues,withthecalculatedvaluesroundedtothreedecimalplacesinaccordancewiththeroundingmethodofPracticeE29:
tm30.8755t
where:
tm=minimumpermissiblewallthickness,in.,andt=specifiedwallthickness,in.
NOTE2—Thistableisamastertablecoveringwallthicknessesavailableinthepurchaseofdifferentclassificationsofpipe,butitisnotmeanttoimplythatallofthewallslistedthereinareobtainableunderthisspecification.
SpecifiedWallThickness(t),in.(mm)0.068(1.73)0.088(2.24)0.091(2.31)0.095(2.41)0.113(2.87)0.119(3.02)0.125(3.18)0.126(3.20)0.133(3.38)0.140(3.56)0.145(3.68)0.147(3.73)0.154(3.91)0.156(3.96)0.179(4.55)0.187(4.75)0.188(4.78)0.191(4.85)0.200(5.08)0.203(5.16)0.216(5.49)0.218(5.54)0.219(5.56)0.226(5.74)0.237(6.02)0.250(6.35)0.258(6.55)0.276(7.01)0.277(7.04)0.279(7.09)0.280(7.11)0.281(7.14)
MinimumPermissibleWallThickness(tm),
in.(mm)
0.060(1.52)0.077(1.96)0.080(2.03)0.083(2.11)0.099(2.51)0.104(2.64)0.109(2.77)0.110(2.79)0.116(2.95)0.122(3.10)0.127(3.23)0.129(3.28)0.135(3.43)0.136(3.45)0.157(3.99)0.164(4.17)0.164(4.17)0.167(4.24)0.175(4.45)0.178(4.52)0.189(4.80)0.191(4.85)0.192(4.88)0.198(5.03)0.207(5.26)0.219(5.56)0.226(5.74)0.242(6.15)0.242(6.15)0.244(6.20)0.245(6.22)0.246(6.25)
SpecifiedWallThickness(t),in.(mm)0.294(7.47)0.300(7.62)0.307(7.80)0.308(7.82)0.312(7.92)0.318(8.08)0.322(8.18)0.330(8.38)0.337(8.56)0.343(8.71)0.344(8.74)0.358(9.09)0.365(9.27)0.375(9.53)0.382(9.70)0.400(10.16)0.406(10.31)0.432(10.97)0.436(11.07)0.437(11.10)0.438(11.13)0.500(12.70)0.531(13.49)0.552(14.02)0.562(14.27)0.593(15.06)0.600(15.24)0.625(15.88)0.656(16.66)0.674(17.12)0.687(17.45)0.719(18.24)
MinimumPermissibleWallThickness(tm),
in.(mm)
0.257(6.53)0.262(6.65)0.269(6.83)0.270(6.86)0.273(6.93)0.278(7.06)0.282(7.16)0.289(7.34)0.295(7.49)0.300(7.62)0.301(7.65)0.313(7.95)0.319(8.10)0.328(8.33)0.334(8.48)0.350(8.89)0.355(9.02)0.378(9.60)0.382(9.70)0.382(9.70)0.383(9.73)0.438(11.13)0.465(11.81)0.483(12.27)0.492(12.50)0.519(13.18)0.525(13.34)0.547(13.89)0.574(14.58)0.590(14.99)0.601(15.27)0.629(15.98)
SpecifiedWallThickness(t),in.(mm)0.750(19.05)0.812(20.62)0.843(21.41)0.864(21.95)0.875(22.23)0.906(23.01)0.937(23.80)0.968(24.59)1.000(25.40)1.031(26.19)1.062(26.97)1.093(27.76)1.125(28.58)1.156(29.36)1.218(30.94)1.250(31.75)1.281(32.54)1.312(33.33)1.343(34.11)1.375(34.93)1.406(35.71)1.437(36.53)1.500(38.10)1.531(38.89)1.562(39.68)1.593(40.46)1.750(44.45)1.781(45.24)1.812(46.03)1.968(49.99)2.062(52.38)2.343(59.51)
MinimumPermissibleWallThickness(tm),
in.(mm)
0.6560.7100.7380.7560.7660.7930.8200.8470.8750.9020.9290.9560.9841.0121.0661.0941.1211.1481.1751.2031.2301.2581.3121.3401.3671.3941.5311.5581.5861.7221.8042.050
(16.66)(18.03)(18.75)(19.20)(19.46)(20.14)(20.83)(21.51)(22.23)(22.91)(23.60)(24.28)(24.99)(25.70)(27.08)(27.79)(28.47)(29.16)(29.85)(30.56)(31.24)(31.95)(33.33)(34.04)(34.72)(35.41)(38.89)(39.57)(40.28)(43.74)(45.82)(52.07)
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A135–05
SUMMARYOFCHANGES
CommitteeA01hasidentifiedthelocationofselectedchangestothisspecificationsincethelastissue,A135–01,thatmayimpacttheuseofthisspecification.(ApprovedMarch1,2005)
(1)Revised11.1.
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