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GeneralSpecification 01‐HTCHH‐CNG‐750Rev.5Issue Date:  7 November 2013 

HandyTubeCorporation’sseamlesstubingspecificationhasbeenusedasthebasisof

developingthetechnicalrequirementsforthisproduct.Theproductsofothermanufacturersshallbeacceptableiftheproductscomplywiththerequirementsoutlinedherein.  

I. Scope:Tubingshallbehigh‐integrityseamlesstubingwithnolongitudinalororbitalwelds.Nowelded‐and‐drawn“seam‐free”tubingshallbepermitted.Alltubingshallbeofthehighestquality,MADEINUSA,understringentindustrystandards,including,butnotlimitedtoPED97/23/EC,ISO9001andNACEMR0175.

II. Manufacturer:TubingmanufacturershallbeISO9001‐certifiedandhaveover30yearsofexperiencemanufacturingtubing.Suppliershallalsobecompliantwithotherindustrystandards,including,butnotlimitedto,PressureEquipmentDirective(PED).TubingmanufacturershallbePED‐certifiedinaccordancewiththerequirementsoutlinedinthePressureEquipmentDirective97/23/ECandthePressureEquipmentRegulations1999,UKStatutoryInstrument1999No.2001and2002No.1267.

III. Material:Materialshallbedual‐certifiedUNSS31600andUNSS31603(TP

316/316L)perASTMA213(StandardSpecificationforSeamlessFerriticandAusteniticAlloy‐SteelBoiler,Superheater,andHeat‐ExchangerTubes)andASTMA269(StandardSpecificationforSeamlessandWeldedAusteniticStainlessSteelTubingforGeneralService).a. MotherTubes:VendorsshallbeRoHSandREACHcompliant.Allmother

tubesshallbehigh‐qualitycold‐finishedorhot‐extruded.Hot‐piercedmothertubesshallnotbepermitted.

b. ChemicalComposition:Pertablebelow.Allcompositionlimits[%s]are

maximumunlessotherwisespecified.Productanalysisshallbereportedinthemilltestcertificate.

IV. HeatTreatment:Alltubingshallbedeliveredinthesolution‐annealedconditionperASTMA269.MaterialshallbeheattreatedinavacuumfurnaceandrapidlycooledbyNitrogenorArgonquenchtoavoidsensitization.Strandheattreatmentshallnotbepermitted.

a. SystemAccuracyTestsperAMS2750ofthefurnacetemperaturecontrol

systemshallbeperformedweekly.Thetemperaturecontrolsystemmustbecapableofsustainingtesttemperaturewithinatoleranceof±5ᵒF.

CompositionLimits,%C Mn P S Si Cr Ni Mo Cu N.035 2.00 .045 .030 1.00 16.0‐18.0 10.0‐14.0 2.5‐3.0 0.50 0.04

 

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GeneralSpecification 01‐HTCHH‐CNG‐750Rev.5Issue Date:  7 November 2013 

b. TemperatureUniformitySurveysperAMS2750ofthefurnaceworkzone

shallbeperformedmonthly.TemperatureUniformityresultsshallbewithin±25ᵒFofpre‐determinedtestingtemperatures.

V. Definition:Theterm“lot”appliestoalltubesofthesamenominaldiameterandwallthickness,producedfromthesameheatofmaterialandannealedinthesamevacuumfurnaceloadatthesametemperatureforthesameamountoftime.a. Allmaterialshallbeprocessedtomaintainlottraceability.Mixingoflots

shallnotbepermitted.

VI. DimensionandTolerances:Tubingshallbemanufacturedto0.750"ODx0.104"W[19.05x2.64mmW]withthetolerancesbelow.Alldimensionsshownbelowareininches.Dimensionsinmillimetersaredisplayedinparentheses.

ODTolerance WTolerance+.005"/‐0 (+0.13/‐0) ±10%

VII. TestingRequirementsandProcedures

a. PositiveMaterialIdentification(PMI)UsingNitonXLAnalyzer:100%

PMIshallbeperformedonallmaterialatitsfinishedsizewhileincoilform.Internaldocumentedcompanyproceduresshallbeinplacetoensure100%PMI.ManufacturershallhaveclearlydefinedequipmentproceduresforalloyidentificationusingNitonXLAnalyzer.Thisanalyzershallemploytheprinciplesofx‐rayfluorescencetoanalyzemetalsamples,whichisnon‐destructiveinnature.OperatorsoftheNitonXLAnalyzershallbewell‐trainedandcertifiedinpropersafetyandmeasuringtechniques.

b. Non‐DestructiveTesting:Manufacturershallperform100%hydrostatictestingofallfinishedmaterialat7,500psi[52MPa]perprocedureoutlinedbelow.

i. Fillcoilswithdeionizedwater.ii. Pressurizetubingandholdforoneminute.iii. Afteroneminute,venttubingandre‐pressurize.iv. Vent,pressurizeagainholdpressureforfiveminutes.

ODW

 

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GeneralSpecification 01‐HTCHH‐CNG‐750Rev.5Issue Date:  7 November 2013 

v. Tubingshallshownobulges,leaks,pinholes,cracksorotherdefectswhensubjectedtothecalculatedhydrostatictestpressure.

c. HardnessTesting:Tubingshallbehardnesstested.Allrequirementsof

ASTMSpecificationE‐18(StandardTestMethodforRockwellHardnessandWilsonSuperficialHardnessofMetallicMaterial)arebinding.Thisspecificationservestogather,forconvenience,detailsfromtheASTMSpecificationandsomespecificrequirements.

d. TensileTesting:TensiletestingshallbecarriedoutperASTME8(Standard

TestMethodsforTensionTestingofMetallicMaterials).Specimenpreparation,equipmentoperationanddatapresentationaredescribedtherein.

e. MicrographicExamination:Themicrostructureshallbeexaminedataminimummagnificationof100Xonasuitablyetchedspecimenpriortoshipment.Specimensshallnotshowanyabnormalitiesoranysignsofsensitization.

VIII. SampleRetention:Suppliershallretainrandomsamplesfromeachlotofmaterial.Samplesshallberetainedasastandardpracticeforaperiodofnolessthanfiveyearsandmadeavailableforfuturetestingifrequestedbythebuyer.

IX. Marking:Marking:Themarkingshallbeasfollowstoensurefulltraceabilityto

meltandheattreatmentlot.

a. SSPCNGPLUSTUBING0.750”ODX0.104”AWTP316/TP316L(2.5%MIN.MOLY)BRIGHTANNEALEDSMLSCOLDDRAWNMADEINUSAASMESA213ASTMA213/A269HANDYTUBEHEAT#LOT#WOID#CRTT3160500X070‐CNGMAWP5500PSI/379BARAT‐425TO300DEGF.

X. MaterialTestReports:TubingmanufacturershallfurnishthematerialtestcertificateoutliningthetestingandresultsmentionedinSectionVIIaboveinaccordancewithASTMA1016(StandardSpecificationforGeneralRequirementsforFerriticAlloySteel,AusteniticAlloySteel,andStainlessSteelTubes).Resultsofmechanicaltestingshallfallwithintherangessetforthinthetableonthefollowingpage.

Min. Tensile Strength, ksi [MPa] 

Min. Yield Strength (0.2% offset),  ksi [MPa] 

Min. Elongation in 2 in. (50 mm) 

[%] 

Hardness, max. [HRB] 

75 [515]  30 [205]  35  80 

 

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GeneralSpecification 01‐HTCHH‐CNG‐750Rev.5Issue Date:  7 November 2013 

XI. Lengths:Allmaterialshallbehigh‐integrityseamlesstubingwithnolongitudinalororbitalwelds.Noweldedorwelded‐and‐drawn“seam‐free”tubingshallbepermitted.Coilsshallbe200feetorlonger.

XII. Packaging:Allmaterialshallbehigh‐integrityseamlesstubingwithno

longitudinalororbitalwelds.Noweldedorwelded‐and‐drawn“seam‐free”tubingshallbepermitted.Allwoodenpackagingmaterials,suchasreelsandpallets,whenrequired,shallbeheat‐treatedandstampedwiththeIPPCmarkperISPMNo.15,“GuidelinesforRegulatingWoodPackagingMaterialinInternationalTrade.”Materialshallbepackagedtomaintaintraceability.Mixingoflotsshallnotbepermitted.

Toeliminatewastecausedbyshorterlengths,onlyonecontinuouscoilshallbewoundperreel.Tubeendsshallbeprotectedbycapstoensurenointernalcontaminationisintroducedduringtransitandstorage.Theoutsidesofthereelsshallbeprotectedwithstretchwrap.

XIII. Note:

a. Allspecificationsmentionedaboveshallbethecurrentrevision.b. Exceptionsanddeviationstothisdocumentaresubjecttoapprovalby

manufacturer.Formalrequestsforexceptionordeviationshallbemadeinwriting.

c. Thisdocumentissubjecttorevisionwithoutnotice.

 

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GeneralSpecification 01‐HTCHH‐CNG‐750Rev.5Issue Date:  7 November 2013 

RevisionHistory 

Revision  Date Description 0  6/18/2013  Created 

1  7/7/2013  Wall thickness updated to 0.103" average wall 

2  9/24/2013  Wall thickness updated to 0.104" 

3  10/4/2013  Marking section updated 

4  10/7/2013  Marking section updated with new SSP part number 

5  11/7/2013  Marking section updated with wider temperature range