管道材料工程规定.docx

管道材料工程规定.docx

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管道材料工程规定

EngineeringSpecification

of

PipingMaterial

Z

AS-BUILT

DuQiang

DuShuli

YaoLiang

2013-10-30

1

IssuedforConstruction

DuQiang

DuShuli

YaoLiang

2012-07-19

版次REV.

说明

DESCRIPTION

设计PRE’D

校对CHK’D

审核APP’D

审定AUTH’D

日期

DATE

Contents

1.0GENERAL

1.1Intent

ThisengineeringspecificationcontainsspecificrequirementsfortheselectionofpipingmaterialsusedinChangshuCoatexAdditiveCo.,LtdHighPerformanceEmulsionSystemProject.

1.2Scope

ThisspecificationshallbeappliedtopipingmaterialsindicatedonP&IDflowdiagramsandutilityflowdiagramspipingsystems.ThespecificationofpipingsystemsprovidedbymanufacturershouldbeapprovedbyMaisonWorleyParsons.

1.3Codesandstandards

Design,fabrication,testingandinspectionofpipingmaterialsshallbeaccomplishedinaccordancewiththeapplicableCodesandStandardsinthelatesteditionasfollows:

CHINESESTANDARD

GB50316

--DesignCodeforIndustrialMetallicPiping

GB/T20801

-Pressurepipingcode-industrialpiping

GB50235

--Codeforconstructionandacceptanceofindustrialmetallicpiping

GB50236

--Codeforconstructionandacceptanceoffieldequipment,industrialpipeweldingengineering

GB/T8163

--SeamlessSteelTubesforLiquidService

GB/T9711.1

--PetroleumandNaturalGasIndustries-SteelPipeforPipelines-TechnicalDeliveryConditions-Part1:

PipeofrequirementsclassA

GB/T14976

-StainlessSteelSeamlessPipesforFluidTransport

HG21547

-PaddleBlank,PaddleSpacerandFigure-8Blank

GB/T12716

-TaperPipeThreadswith60degree

GB/T12459

-SteelButt-weldingSeamlessPipeFittings

GB/T13405

-SteelPlateButt-weldingPipeFittings

GB/T14383

-ForgedFitting,SocketWeldingandThreaded

HG20553

-DimensionSelectingSeriesForSeamlessandWeldedSteelPipeofChemicalIndustry

HG/T20592~20614

（EuropeSeries）

-SteelPipeFlanges,GasketsandFasteners

THEOTHERSTANDARDS

MSS-SP-83

-Class3000SteelPipeUnionsSocket-weldingandThreaded

MSS-SP-97

-IntegrallyReinforcedForgedBranchOutletFittings-Socketwelding,ThreadedandButt-weldedEnds

2.0MATERIALS

2.1StandardMaterials

2.1.1MaterialforindividualpipingcomponentsshallnormallyconformtotherequirementsofGB,HGstandardetc.Whenmaterialsarenotcoveredbythelocalstandards,equivalentASME,ASTM,API,MSS,BSormanufacturer’sstandardmaybeused.

2.1.2Allcarbonandlowtemperaturecarbonsteelgradesofpipematerialshallhaveamaximumcarboncontentof0.25%andamaximumcarbonequivalentof0.45basedonthefollowingformula:

2.1.3Allcarbonsteelshallbesuppliedwithkilledsteel.Theuseofrimmingsteelisnotpermitted.Allcarbonsteelmaterialshallbesuppliedinnormalizedfinishcondition.AnalternativeheattreatedconditionshallbesubmittedtoPurchaserforapproval

2.1.4Allausteniticstainlesssteelshallbesuppliedinasolutionannealedcondition.Noweldingorworkingofthematerialispermittedafterthistreatmentintheshop.Allweldsmadetostainlesssteelcomponentsshallbepickledandpassivated.

2.1.5Galvanizingpipewhenspecifiedshallbehotdipped.TheminimumweightofaveragecoatingshallbeaccordingtoGB/T3091.

2.2Asbestos

Asbestosshallnotbeusedintheplantinanyform.

3.0GENERALREQUIREMENTS

3.1General

Asarule,theprincipaldimensionsofpipingcomponents,whicharedesignatedinPipingMaterialClassification,shallbeinaccordancewithapplicablestandard.

3.2Pipes

3.2.1Dimensionsofpipesshallbeinaccordancewiththefollowingtableexceptotherwisenoted.

Item

Product

Dimension

Pipe

（SMLS）

Carbonsteel

GB/T8163

HG20553（Ia）

Austeniticstainlesssteel

GB/T14976

HG20553（Ia）

3.2.2DN10（NPS3/8）,32（NPS1¼）,65（NPS2½）,NPS3½,125（NPS5）andDN550（NPS22）shallnotbeused.However,incaseswheretheuseofthesesizescannotbeavoided,therequiredpipingmaterial,fittings,flanges,valvesandgasketsshallbethesamematerialasnextlargersizesintheapplicablepipingclass.

3.2.3Thefollowingisanequivalentpipesizetable:

NPS

DN

NPS

DN

½”

15

16”

400

¾”

20

18”

450

1”

25

20”

500

1½”

40

24”

600

2”

50

26”

650

2-1/2”

65

28”

700

3”

80

30”

750

4”

100

32”

800

6”

150

34”

850

8”

200

36”

900

10”

250

40”

1000

12”

300

44”

1100

14”

350

48”

1200

3.3Valves

3.3.1Allvalvesshallbeprotectivecoatedinaccordancewithvendor’sstandard.

3.3.2Anyexposed（unpainted）carbonsteelparts/surfacesshallbegivenaheavycoating.Internalmetalsurfacesshallbesprayedorcoatedwithsimilarsuitablerustpreventative.

3,3,3Valveendsshallbesuitablyprotectedagainstdamageandtheingressofforeignmatter.Endsshallbeprotectedasbelow:

a）Socketweldandplainendsshallbeclosedwithmetalorplasticprotectorsthatfiteitherinsideoroutsidethevalveends.

b）Threadedendsshallbefittedwithplasticplugs/caps

c）Flangedendsshallbeprotectedbyplastic（preferred）,orwoodcovers,securelyheldinplacebyaminimumoffourbolts/inserts.Gasketcontactsurfacesshallbeprotectedtoensureserrationsarenotdamagedintransitorstorage.

3.3.4Allvalvesshallbemarked/taggedwith（asaminimum）theprojecttagand/orcodenumberinadditionaltoinformationrequiredbytheapplicabledesignstandard.Fullmarkingrequirementswillbestatedwithintheenquiry.

3.3.5Allvalvesexceptgatevalvehavingapreferreddirectionofflowshallbemarkedwithanarrowcastonthevalvebody.

3.3.6Endandbonnetflangesshallbecastorforgedintegrallywiththevalvebody.Incaseofconversionofbuttweldendvalvestoflangebyweldingonflangesisacceptableonlywithadditionheattreatment（ifrequired）and100%RTandsubjecttoPURCHASERpriorreviewandapproval.

3.3.7Valvesspecifiedasneedingtobe‘firesafe’shallhavebeentestedandcertifiedashavingmettherequirementsofAPI607.ThisFireSaferequirementshallbeapplicabletosoftseatedvalvesonly.

3.3.8VendorshallnotmodifyanexistingvalvetobringintoconformancewithdatasheetrequirementswithoutwrittenapprovalofthePurchaser.Examplesofmodificationsareasfollows:

（a）Additionofextendedbonnet（gascolumn）toastandardvalve.

（b）Insertingresilientseats.

（c）Revisingtrim.

（d）Modifyingflangedendvalvestobuttweldend（machiningoffflanges）.

（e）Changingboltingand/orpacking.

（f）Weldrepairtocastingsandanysubsequentheattreatment.

（g）Modifyingabuttweldendvalvetothreadedorsocketweldends.

（h）Modifyingathreadedendvalvetosocketweldends.

3.3.9Unlessspecifiedotherwise,allausteniticstainlesssteelmaterialsshallbefurnishedinasolutionannealedcondition.Approvedrepairs,ifany,shallbemadepriortosolutionannealing.

3.3.10Metallicandnon-metallicbonnetandcovergasketsshallhavecorrosionresistanceequal（orbetter）thanthatofthebodyandbonnetmaterials.

3.3.11Anyoptionalbackseat,lowpressureclosureorhighpressureclosuretestshallbeclearlyidentifiedonthevalvedatasheet（withrelevanttestpressure/temperature）.Vendorshallincludealladditionalcostsforthesetests.

3.3.12Allpressuretestingofausteniticstainlesssteelvalvesshallbecarriedoutwithwaterhavingamaximumof65ppmchloridecontent.

3.3.13Eachwrenchoperatedballvalvesshallbefurnishedwithawrench.

3.3.14EnclosedgearoperatorsshallbeprovidedforvalvesasfollowsIfnodecriptionindatasheet:

Gatevalve

Globevalve

Ballvalve

Butterflyvalve

PN16

≥DN400

≥DN300

≥DN200

≥DN50

PN40

≥DN350

≥DN250

≥DN100

≥DN50

3.3.15Forinsulatedvalves,asindicatedinP&IDanddatasheet,thehandleshaftshouldbeextended,whichtheoperatorshallbeoutsidetheinsulation.Theindividualextendlengthshallbeshownindatasheet.

3.4Flanges

3.4.1Dimensionsshallbeasfollows:

1）HG/T20592-HG/T20614（EuropeanSeries）

3.4.2Flangefacingfinishshallbeserratedfinishinaccordancewithappliedstandardincaseofsoftgasket.

3.5Fittings

3.5.1Dimensionshallbeasfollows:

Forgedfittings,socketweldingandthreaded

GB/T14383SeriesI

Steelbutt-weldingseamlesspipefittings

GB/T12459SeriesI

Steelplatebutt-weldingpipefittings

GB/T13401SeriesI

Specialfittings

Manufacturer’sstandard

3.5.2Fittingsshallbedesignedforpressureratingfullyequaltothosecalculatedforseamlesspipeofthesameorequivalentmaterial.WrittenrecordsconfirmingtheaboveshallbeavailableforreviewbyPurchaserduringthebiddingstage.

3.5.3Longradiuselbowsshallbeused.Shortradiuselbowsmaybeusedonlywherespacelimitstheuseoflongradiuselbows.

3.5.4Branchconnectionsforindividualpipingclassesshallbemadeinaccordancewithbranchconnectiontableofindividualpipingclass.

3.5.5Pipeplugshallbesquareheadtype.

3.6Gaskets

3.6.1Dimensionsshallbeasfollows:

（1）Non-metallicGasketHG/T20606

（2）Graphite/304GasketHG/T20608

（3）SpiralWoundGasketHG/T20610

3.6.2Unlessnotedotherwise,non-metallicgasketsforflatfaceshallbe3.0mmthickness.

3.6.3Unlessotherwisenotedspiralwoundgasketsshallbe4.5mmthick.

3.7BoltsandNuts

3.7.1Dimensionandstandardshallbeasfollows:

Lengthofstudbolt

HG/T20613

Nut

GB6170

Studbolt

GB901

Studbolt（fulllength）

HG/T20613

3.7.2Studboltshallbecontinuouslythreadedwithfulllength.DimensionsandtolerancesofthreadshallbeinaccordancewithGB196andGB197.

3.7.4Machinebolts/screwsshallbeusedwhenmatingvalveswiththreadedtaps.Thesemachinebolts/screwsshallhavethesamematerialde