ASTM A 53 A 53M-2007(8)

ASTM材料标准

16.1.2Forplain-endpipelighterthanextra-strongweight,itshallbepermissiblefornotmorethan5%ofthetotalnumberofpipetobeinlengthsof12to16ft[3.66to4.88m].

16.1.3Pipeofextra-strongweightorheaviershallbeinrandomlengthsof12to22ft[3.66to6.71m],exceptthatitshallbepermissiblefornotmorethan5%ofthetotalofpipetobeinlengthsof6to12ft[1.83to3.66m].

16.1.4Forextra-strongweightorlighterpipeorderedindouble-randomlengths,theminimumlengthsshallbenotlessthan22ft[6.71m]andtheminimumaveragelengthfortheordershallbenotlessthan35ft[10.67m].

16.1.5Forpipeheavierthanextra-strongweightorderedinlengthslongerthansinglerandom,thelengthsshallbeasagreeduponbetweenthemanufacturerandthepurchaser.16.1.6Ifpipeisfurnishedthreadedandcoupled,thelengthshallbemeasuredtotheouterfaceofthecoupling.

17.GalvanizedPipe

17.1Galvanizedpipeorderedunderthisspeci cationshallbecoatedwithzincinsideandoutsidebythehot-dipprocess.ThezincusedforthecoatingshallbeanygradeofzincconformingtoSpeci cationB6.

17.2Weight(Mass)perUnitAreaofCoating—Theweight(mass)perunitareaofzinccoatingshallbenotlessthan1.8oz/ft2[0.55kg/m2]asdeterminedfromtheaverageresultsofthetwospecimenstakenfortestinthemannerprescribedin17.5andnotlessthan1.6oz/ft2[0.49kg/m2]foreachofthesespecimens.Theweight(mass)perunitareaofcoating,ex-pressedinouncespersquarefoot[kilogramspersquaremetre]shallbecalculatedbydividingthetotalweight(mass)ofzinc,insideplusoutside,bythetotalarea,insideplusoutside,ofthesurfacecoated.Eachspecimenshallhavenotlessthan1.3oz/ft2[0.40kg/m2]ofzinccoatingoneachsurface,calculatedbydividingthetotalweight(mass)ofzinconthegivensurface(outsideorinside)bytheareaofthesurfacecoated(outsideorinside).

17.3Weight(Mass)perUnitAreaofCoatingTest—Theweight(mass)perunitareaofzinccoatingshallbedeterminedbystrippingtestsinaccordancewithTestMethodA90/A90M.17.4TestSpecimens—Testspecimensfordeterminationofweight(mass)perunitareaofcoatingshallbecutapproxi-mately4in.[100mm]inlength.

17.5NumberofTests—Twotestspecimensforthedetermi-nationofweight(mass)perunitareaofcoatingshallbetaken,onefromeachendofonelengthofgalvanizedpipeselectedatrandomfromeachlotof500lengths,orfractionthereof,ofeachsize.

17.6Retests—Iftheweight(mass)perunitareaofcoatingofanylotdoesnotconformtotherequirementsspeci edin17.2,retestsoftwoadditionalpipesfromthesamelotshallbemade,eachofwhichshallconformtothespeci edrequire-ments.

17.7Ifpipeorderedunderthisspeci cationistobegalva-nized,thetension, attening,andbendtestsshallbemadeonthebasematerialbeforegalvanizing,ifpracticable.Ifspeci- ed,resultsofthemechanicaltestsonthebasematerialshallbereportedtothepurchaser.Ifitisimpracticabletomakethemechanicaltestsonthebasematerialbeforegalvanizing,itshallbepermissibletomakesuchtestsongalvanizedsamples,

andany akingorcrackingofthezinccoatingshallnotbeconsideredcauseforrejection.Ifgalvanizedpipeisbentorotherwisefabricatedtoadegreethatcausesthezinccoatingtostretchorcompressbeyondthelimitofelasticity,some akingofthecoatingisacceptable.18.Inspection

18.1Theinspectorrepresentingthepurchasershallhaveentry,atalltimeswhileworkonthecontractofthepurchaserisbeingperformed,toallpartsofthemanufacturer’sworksthatconcernthemanufactureofthepipeordered.Themanu-facturershallaffordtheinspectorallreasonablefacilitiestobesatis edthatthepipeisbeingfurnishedinaccordancewiththisspeci cation.Alltests(exceptproductanalysis)andinspectionshallbemadeattheplaceofmanufacturepriortoshipment,unlessotherwisespeci ed,andshallbesoconductedasnottointerfereunnecessarilywiththeoperationoftheworks.19.Rejection

19.1Thepurchaserispermittedtoinspecteachlengthofpipereceivedfromthemanufacturerand,ifitdoesnotmeettherequirementsofthisspeci cationbasedupontheinspectionandtestmethodasoutlinedinthespeci cation,thelengthshallberejectedandthemanufacturershallbenoti ed.Dispositionofrejectedpipeshallbeamatterofagreementbetweenthemanufacturerandthepurchaser.

19.2Pipefoundinfabricationorininstallationtobeunsuitablefortheintendeduse,underthescopeandrequire-mentsofthisspeci cation,shallbesetasideandthemanufac-turernoti ed.Suchpipeshallbesubjecttomutualinvestiga-tionastothenatureandseverityofthede ciencyandtheformingorinstallation,orboth,conditionsinvolved.Disposi-tionshallbeamatterforagreement.20.Certi cation

20.1Themanufacturerorsuppliershall,uponrequest,furnishtothepurchaseracerti cateofcompliancestatingthatthematerialhasbeenmanufactured,sampled,tested,andinspectedinaccordancewiththisspeci cation(includingyear-date),andhasbeenfoundtomeettherequirements.20.2TestReport—ForTypesEandS,themanufacturerorsuppliershallfurnishtothepurchaserachemicalanalysisreportfortheelementsgiveninTable1.

20.3EDI—Acerti cateofcomplianceortestreportprintedfrom,orusedin,electronicformfromanelectronicdatainterchange(EDI)transmissionshallberegardedashavingthesamevalidityasacounterpartprintedinthecerti er’sfacility.TheuseandformatoftheEDIdocumentaresubjecttoagreementbetweenthepurchaserandthemanufacturerorsupplier.

NOTE7—EDIisthecomputertocomputerexchangeofbusinessinformationinastandardformatsuchasANSIASCX12.

20.4Notwithstandingtheabsenceofasignature,theorga-nizationsubmittingthecerti cateofcomplianceortestreportisresponsibleforits

content.