GB 50714-2011 GB50714-2011鋼管涂層車間工藝設計規(guī)范-英文

專用

人人文庫

NATIONALSTANDARD

OFTHEPEOPLESREPUBLICOFCHINA

CodeforDesignofSteelPipeCoatingWorkshopProcess

GB50714-2011

ChiefDevelopmentDepartment:ChinaMetallurgicalConstructionAssociation

ApprovalDepartment:MinistryofHousingandUrban-RuralDevelopment

ofthePeoplesRepublicofChina

ImplementationDate:June1,2012

專用

人人文庫

ChinaPlanningPress

Beijing2016

圖書在版編目(CIP)數(shù)據(jù)

鋼管涂層車間工藝設計規(guī)范英文中國冶金建設協(xié)會組織

GB50714-2011:/

編譯北京中國計劃出版社

.—:,2016.2

ISBN978-7-5182-0340-6

中涂層鋼管車間工藝設計設計規(guī)范中國

Ⅰ.①G…Ⅱ.①…Ⅲ.①-----

英文

Ⅳ.①TG142-65

中國版本圖書館數(shù)據(jù)核字第號

CIP(2016)006082

ChineseeditionfirstpublishedinthePeoplesRepublicofChinain2011

EnglisheditionfirstpublishedinthePeoplesRepublicofChinain2016

byChinaPlanningPress

rd專用

3Floor,CTower,GuohongBuilding

No.A11,Muxidi-Beili,XichengDistrict

Beijing,100038

PrintedinChinabyBeijingJinghuaHucaisPrintingCO.,LTD

?2011byMinistryofHousingandUrban-RuralDevelopmentof

thePeoplesRepublicofChina

Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformor

byanymea人人文庫ns,graphic,electronic,ormechanical,includingphotocopying,recording,

oranyinformationstorageandretrievalsystems,withoutwrittenpermissionofthepublisher.

Thisbookissoldsubjecttotheconditionthatitshallnot,bywayoftradeorotherwise,belent,

resold,hiredoutorotherwisecirculatedwithoutthepublisherspriorconsentinanyformof

blindingorcoverotherthanthatinwhichthisispublishedandwithoutasimilarcondition

includingthisconditionbeingimposedonthesubsequentpurchaser.

ISBN978-7-5182-0340-6

AnnouncementoftheMinistryofHousingandUrban-Rural

DevelopmentofthePeoplesRepublicofChina

No.1080

AnnouncementofPublishingtheNationalStandardof

CodeforDesignofSteelPipeCoatingWorkshopProcess

CodeforDesignofSteelPipeCoatingWorkshopProcess

hasbeenapprovedasanational

standardwithaserialnumberofGB50714-2011,anditshallbeimplementedfromJune1,

2012.Therein,Articles3.0.3and3.0.4arethemandatoryprovisionsandmustbeenforced

strictly.

AuthorizedbytheResearchInstituteofStandards&Norms(RISN)oftheMinistryof

HousingandUrban-RuralDevelopmentofthePeoplesRepublicofChina,thisCodeispublished

anddistributedbyChinaPlanningPress.專用

MinistryofHousingandUrban-RuralDevelopmentofthePeoplesRepublicofChina

July26,2011

人人文庫

Foreword

ThisCodewasdevelopedbyCISDIEngineeringCo.,Ltd.togetherwiththeorganizations

concernedundertheorganizationofChinaMetallurgicalConstructionAssociation(CMCA)in

accordancewiththerequirementsof"NoticeonPrintingandDistributingtheDevelopmentand

RevisionPlanofEngineeringConstructionStandardsandCodesin2006(Batch2)"(JIANBIAO

[2008]No.105)issuedbytheformerMinistryofConstruction(MOC).

TheCodeispreparedbasedontheextensiveinvestigationfindingsandexperienceacquired

frompractices,withreferencemadetorelevantinternationalstandardsandleadingoverseas

experience.Thepresentversionisfinalizedandapprovedafterconsultingtherelevantparties.

ThisCodecomprises12Chapters,respectivelycovering:GeneralProvisions,Termsand

Symbols,BasicRequirements,SelectionandStorageofIncomingMaterials,ProductionProcessof

SteelPipeCoatingLine,EquipmentSelectionforSteelPipeCoatingLine,OperationScheme,

WorkingTimeandDutyRatiooftheLine,CalculationofProductionCapacityfortheLine,Plant

Layout,OtherFacilities,MainTechnical&EconomicalIndicators專用ofthePlant,Environmental

Protection,LaborSafetyandIndustrialHygiene.

Theprovisionsprintedinboldtypearemandatoryandmustbeenforcedstrictly.

TheMinistryofHousingandUrban-RuralDevelopmentisinchargeoftheadministrationof

thisCodeandtheinterpretationofthemandatoryprovisions,andCISDIEngineeringCo.,Ltd.is

responsiblefortheinterpretationofspecifictechnicalcontents.Theopinionsandsuggestions,

whenevernecessary,canbepostedorconveyedtoCISDIEngineeringCo.,Ltd.(address:No.

1,ShuanggangRoad,YuzhongDistrict,Chongqing400013,China)forreferenceinfuture

revision.

ChiefDevelopmentOrganization,ParticipatingDevelopmentOrganizations,ChiefDrafting

StaffandChiefReviewersofthisCodearelistedasbelow:

ChiefDevelomentOranization

pg:

CISDIEngineeringCo.,Ltd.

ParticiatinDevelomentOranizations

pgpg:

BERISEngineeringandResearchCorporation

人人文庫CNPCBaojiPetroleumSteelPipeCo.,Ltd.

BaoshanIronandSteelCo.,Ltd.

TianhuaInstituteofChemicalMachinery&AutomationCo.,Ltd.

ShashiSteelPipeWorksofJianghanPetroleumAdministrationBureau,Sinopec

PanyuChuKongSteelPipeCo.,Ltd.

CNPNResearchInstituteofEngineeringTechnology

ChiefDraftinStaff

g:

CaoYongMuDongJiaLihongZhangSijiXuGuangyinZhangZhanming

WuShijieWeiKunhongLiuJinxiaWangHongchunChenBenlun

ZengLiangpingQiaoJunpingShiHuihuiWuJiayouWangQiuyan

·1·

ChiefReviewers

:

GuoQijiaoZhengWeijingZhangXiaojunLiHuaipingLiGenquan

ZhangZhihaoChenChaoWenHongweiYiJianjun

專用

人人文庫

·2·

Contents

……………

1GeneralProvisions(1)

…………

2TermsandSymbols(2)

……………

3BasicRequirements(4)

………………

4SelectionandStorageofIncomingMaterials(5)

……………

5ProductionProcessofSteelPipeCoatingLine(6)

……………………

5.1ProductionProcessofExternalCoatingLine(6)

………

5.2ProductionProcessofInternalCoatingLine(6)

…………

6EquipmentSelectionforSteelPipeCoatingLine(8)

……………

6.1EquipmentforExternalCoatingLine(8)

……………

6.2EquipmentforInternalCoatingLine(9)

……………

7OperationScheme,WorkingTimeandDutyRatiooftheLine(10)

……………

8CalculationofProductionCapacityfortheLine(11)

…………………

9PlantLayout專用(12)

………………

10OtherFacilities(13)

…………………

11MainTechnical&EconomicalIndicatorsofthePlant(14)

………

12EnvironmentalProtection,LaborSafetyandIndustrialHygiene(15)

…………

ExplanationofWordinginThisCode(16)

…………

ListofQuotedStandards(17)

人人文庫

1GeneralProvisions

1.0.1

ThisCodeisformulatedwithaviewtoimprovingtheprocessdesignofsteelpipecoating

plant,topromotingtheprocesstechnologyandequipmentforsteelpipeplantsandtopropellingthe

technicalupgradingandrestructuringofsteelpipecoatingplantsinChinainaccordancewiththe

nationalpolicyforiron&steelindustrialdevelopment.

1.0.2

ThisCodeisapplicableforprocessdesignofnewinstallation,revampingandexpansionof

externalpolyethylene,polypropylene,fusionbondedepoxy(FBE)coatinglineforsteelpipes,as

wellasinternalfusionbondedepoxyandbi-componentliquidcoatinglineforsteelpipes.

1.0.3

Processdesignforthesteelpipecoatingplantinstallation,revampingandexpansionshall

complywiththenationalindustrialpolicy,andachievehighquality,highefficiency,lowcostand

environmentallyfriendly.

1.0.4

Processdesignforthesteelpipecoatingplantshallcomplywiththecurrentnational

standardsinadditiontothisCode.專用

人人文庫

·1·

2TermsandSymbols

2.0.1

Coating

Alayeroforganicsubstanceappliedontothesurfaceofthesteelpipe(substrate).

2.0.2

Externalcoating

Alayeroforganicsubstanceappliedonexternalsurfaceofsteelpipe(substrate).

2.0.3

Internalcoating

Alayeroforganicsubstanceappliedoninternalsurfaceofsteelpipe(substrate).

2.0.4

Fusionbondedepoxycoating

Alayeroffusionbondedepoxysubstanceappliedonsurfaceofsteelpipe(substrate).

2.0.5

Bi-componentliquidcoating

Alayerofsubstancethatisobtainedwhenthebi-componentorganicliquidpaintappliedon

surfaceofsteelpipe(substrate)iscured.

2.0.6

Coatingmaterial

Incomingmaterialofcoatingthatisappliedonsurfaceofsteelpipe(substrate).

2.0.7專用

Adhesive

Anysubstancethatbindsthesteelpipesubstrateorprimertopolyethyleneortopolypropylene.

2.0.8

Coatingline

Anassemblyofprocessequipmentnecessarytoproducetheproductsasspecifiedinthe

productmix,coveringthefullprocessfromincomingmaterialpreparationtillfinishedproduct

collection.

2.0.9

Annualscheduledoperationtime

Annualcalendartimedeductingoverhaultime,mediumrepairtime,minorrepairtimeand

normalshifttake-overtime.

2.0.10

Annualavailableproductiontime

Annualscheduledoperationtimedeductingtoolchangingtime,sizechangingtimeand

downtime.

2.0.11

Annualnecessaryproductiontime

Productiontimerequiredtoachievetheannualproductioncapacityspecifiedintheproduct

mix.人人文庫

2.0.12

Dutyratiooftheline

Theratioofannualnecessaryproductiontimetoannualavailableproductiontimeoftheline

(inpercentage).

2.0.13

Consumptionperunitofproduct

Theamountofenergyandutilities(electricity,water,compressedair,etc.),incoming

materialsandauxiliarymaterialsconsumedinproducingperunitareaofcoatingproduct.

2.0.14

Pipedetaching

Aprocessincoatingapplicationprocedureofexternalcoatingline,whichisintendedto

separatetheexternalpolyethyleneorpolyethylenecoatingoftwoconsecutivesteelpipesattheir

·2·

head-tailconnection.

2.0.15

Manualinspection

Amethodtoexaminethesteelpipeorcoatingsurfacequality,coatingthickness,etc.byeyesor

toolssuchasmagnifier,roughnesstester,gauges,thicknessgaugeandsalinitytester.

2.0.16

On-line

Foraprocedureinrelationtothecontinuoussteelpipecoatingline,on-linereferstoamodeof

operationinwhichthework-piece(includingincomingmaterialsandsemi-finishedcoatedpipes)

canbeshiftedfromthelinetotheprocedureorfromtheproceduretothelinewithoutusingcrane,

carormanualtransport.

2.0.17

Off-line

Foraprocedureinrelationtothecontinuoussteelpipecoatingline,off-linereferstoamodeof

operationinwhichthework-piece(includingincomingmaterials,semi-finishedcoatedpipes)canbe

shiftedfromthelinetotheprocedureorfromtheproceduretothelinewithusingcrane,caror

manualtransport.

2.0.18

Organicexhaustgas

Thegasgeneratedduringsteelpipecoatingandcontainingorganiccomponents.

2.0.19

Organicexhaustgaspurificationequipment

Theequipmenttoremovetheorganicexhaustgasgeneratedduringsteelpipecoating.

2.0.20專用

Surfacepreparation

Aprocesstoremovetheimpuritiesgeneratedorattachedtothesurfaceofsteelpipes

(substrate)priortocoatinginordertoimprovethecoatingadhesiontothesteelpipesubstrate.

2.0.21

Spraycoating

Atypeofcoatingprocessinwhichtheatomizedcoatingmaterialissprayedonsurfaceofsteel

pipe(substrate).

2.0.22

Electrostaticpowdercoating

Atypeofcoatingprocessinwhichtheatomizedpowdercoatingmaterialischargedor

polarizedinhigh-voltageelectricfieldsothattheycanadheretosurfaceofsteelpipe(substrate).

2.0.23

Annualextrusioncladding

Atypeofcoatingprocessinwhichthecoatingmaterialismeltintheextruderandcladdedon

surfaceofsteelpipe(substrate)ascircular-shapedthinfilm.

2.0.24

Sidewiseextrusionwrapping

Atypeofcoatingprocessduringwhichthecoatingmaterialismeltintheextruderand

wrappedontosurf人人文庫aceofsteelpipe(substrate)asstrip-shapedthinfilm.

·3·

3BasicRequirements

3.0.1

Thetypeofsteelpipecoatinglineshallbedeterminedbasedontheproducttype,product

sizesandproductioncapacityspecifiedintheproductmix.

3.0.2

Thesteelpipecoatingplantshouldbelocatedadjacenttothefeedstockpipeplantorthe

coatedpipeuser.

3.0.3Thesteelpipecoatingplantmustnotbelocatedinresidentialareaorinpublicbuildingsused

forculture,education,medicalcare&healthpurpose,etc.

3.0.4Thesteelpipecoatingplantmustbeprovidedwithnecessarysafety&hygienefacilitiesand

environmentalprotectionfacilities(ventilation,fumeexhaustingandcleaning).

3.0.5

Protectivepadshouldbeinsertedtoav6oiddirectcontactbetweenthepipetransport

equipmentandthepipe.

3.0.6

Energy-efficientproductionprocessandgovernment-recommendedwater-efficientorenergy-efficient

equipmentshallbeusedforthesteelpipecoatingplant.專用

人人文庫

·4·

4SelectionandStorageofIncomingMaterials

4.0.1

Thequalityofseamlesssteelpipesandweldedsteelpipesshallcomplywiththerelevant

currentnationalstandardsandthepurchasespecifications.

4.0.2

Polyethylene,polypropyleneandadhesiveshallmeetthefollowingrequirements:

1

Thepropertyofcoatingmaterialsshallmeettherequirementsoftherelevantcurrentnational

standardsandthepurchasespecifications.

2

Thecoatingmaterialsshallbestoredwithprovisionsagainstdampandimpuritiescontamination,

etc.,andthestoragefacilitiesshouldbedesignedinaccordancewiththecoatingmanufacturers

recommendations.

4.0.3

Bi-componentliquidpaintingshallmeetthefollowingrequirements:

1

Thepropertyofcoatingmaterialsshallmeettherequirementsoftherelevantcurrentnational

standardsandthepurchasespecifications.

2

Thecoatingmaterialstoragefacilitiesshallcomplywiththerelevantcurrentnationalstandards,

andshouldbedesignedinaccordancewiththecoatingmaterialmanufactu專用rersrecommendationsandshall

beusedinspecifiedratio.

4.0.4

Epoxypowdercoatingshallmeetthefollowingrequirements:

1

Thepropertyofcoatingmaterialsshallmeettherequirementsoftherelevantcurrentnational

standardsandthepurchaseorders.

2

Thecoatingmaterialstoragefacilitiesshallcomplywiththerelevantcurrentnationalstandards,

andshouldbedesignedinaccordancewiththepowdercoatingmanufacturersrecommendations.

3

Incasethesteelpipeiscoatedoninteriorsurfacefirstbeforeexteriorsurface,hightemperature

resistantcoatingmaterialshouldbeusedforinternalcoating.

人人文庫

·5·

5ProductionProcessofSteelPipeCoatingLine

5.1ProductionProcessofExternalCoatingLine

5.1.1

Fortheexternalcoatingline,annularextrusioncladding,sidewiseextrusionwrappingor

fusionbondedepoxy(FBE)powdercoatingprocessshallbeselecteddependingonthesizesand

typesoffeedstockpipesandcoatedpipes.

5.1.2

Externalshot(orsand)blastingandcoatingapplicationprocessshouldbecontinuous.

5.1.3

Productionprocessforexternalcoatinglineshallconsistofsurfacepreparation,application

andfinishingprocedure.

5.1.4

Surfacepreparationshallconsistofsteelpipecharging,cleaning,preheating,externalshot

blasting(orsandblasting),internalpurging,externalsurfacedusttreatment,manualinspection,

pipeendisolationandotherproceduresasmayberequired.

5.1.5

Forannularextrusioncladdingprocess,coatingapplicationshallconsistofheating,prime

epoxyspraying,adhesivecladding,polyethyleneorpolypropylenecladding,pipedetaching,water

coolingandotherproceduresasmayberequired.

5.1.6專用

Forsidewiseextrusionwrappingprocess,coatingapplicationshallconsistofheating,prime

epoxyspraying,adhesivewrapping,polyethyleneorpolypropylenewrapping,rollerrolling,pipe

detaching,watercoolingandotherproceduresasmayberequired.

5.1.7

Forfusionbondedepoxypowderspraycoating,coatingapplicationshallconsistofheating,

epoxypowderspraycoating,watercoolingandotherproceduresasmayberequired.

5.1.8

Measuresshallbetakentopreventthecoolingwaterfromenteringthecoatedareaalong

theinteriorwallofpipeduringwatercooling.

5.1.9

Finishingprocessshallconsistofresidualwaterremovalinpipe,manualinspection,leakage

detection,peelingtest,sampling,pipeendcleaning,marking,packaging,collectionandother

proceduresasmayberequired.

5.1.10

Forexternalpolyethyleneorpolypropylenecoating,aprocedureshouldbeprovidedtodry

theadhesivesandcoatingmaterials(polyethyleneorpolypropylene)priortocharging.

5.1.11

Negative-pressurecladdingshallbeusedforannularextrusioncladding.

5.1.12

Dryandcleancompressedairshallbeusedforspraycoatingoffusionbondedepoxy

powder.人人文庫

5.2ProductionProcessofInternalCoatingLine

5.2.1

Fusionbondedepoxy(FBE)orbi-componentliquidcoatingprocessshallbeselectedfor

internalcoatinglinedependingonthedesiredtypeofcoatingproduct.

5.2.2

IncaseFBEpowderisusedforinternalcoatingandexternalcoatingisrequired,internal

coatingshallbeappliedbeforeexternalcoating.Incasebi-componentliquidisusedforinternal

coatingandexternalcoatingisrequired,externalcoatingshallbeappliedbeforeinternalcoating.

5.2.3

Productionprocessofinternalcoatinglineshallconsistofsurfacepreparation,coatingapplication

andfinishingprocedure.

·6·

5.2.4

Surfacepreparationshallconsistofsteelpipecharging,interiorsurfacecleaning,innerpurging,

manualinspection,pipeendisolationandotherproceduresasmayberequired.

5.2.5

Incasethepipediameterislargerthanorequalto500mm,theinteriorsurfaceshouldbe

cleanedbyinnershotblasting.

5.2.6

FBEpowdercoatingshallconsistofheating,epoxypowderspraycoating,curing,cooling

andotherproceduresasmayberequired.

5.2.7

Bi-componentliquidcoatingshallconsistofcoatingpreparation,filtering,purging,spray

coatingandotherproceduresasmayberequired.Incasethepipediameterislargerthanorequalto

200mm,thebi-componentliquidshouldbespraycoatedathighpressurewithoutair.

5.2.8

FinishingofFBEcoatingshallconsistofmanualinspection,sampling,marking,package,

collectionandotherprocedures(e.g.leakagedetection)asmayberequired.

5.2.9

Finishingofbi-componentliquidcoatingshallconsistofmanualinspection,solventpurging,

curing,sampling,off-lineinspection,marking,packaging,collectionandotherprocedures(e.g.leakage

detection)asmayberequired.

5.2.10

DryandcleancompressedairshallbeusedforspraycoatingofFBEpowderandbi-

componentliquid.

5.2.11

Incasetherelativehumidityofairisover85%,dehumidifyingprocedureshallbeincluded

insurfacepreparationandcoatingapplication.

5.2.12專用

Organicexhaustgasgeneratedduringthebi-componentliquidcoatingshallbecollected

andcleaned.

人人文庫

·7·

6EquipmentSelectionforSteelPipeCoatingLine

6.1EquipmentforExternalCoatingLine

6.1.1

Theentireexternalcoatinglineshallbeprovidedwithbasicautomationcontrol.

6.1.2

Automaticcleaningequipmentshouldbeusedforcleaningpriortoshot(orsand)blasting.

6.1.3

Preheatingequipmentthatwillnotcausecontaminationtothepipesurfaceandtemperature

measuringdeviceshallbeinstalledforpreheatingprocedurepriortoshot(orsand)blasting.

6.1.4

Equipmentforshot(orsand)blastingshallbeselectedaccordingtothefollowingrequirements:

1

Shot(orsand)blastingmachineshallbeabletostopshot(orsand)blastingandsend

alarmautomatically.

2

Shot(orsand)blastingmachineshallallowabrasiveseparation&screeningandrecycling.

3

Dustcollectionanddustfilteringsystemshallbeinstalled.

6.1.5

Dustcleaningdeviceshallbeinstalledtocollectandtreatthedustbeforecoating.

6.1.6

Externalsurfaceofthepipeshallbeheatedbypollution-freeheatsourcebeforecoating.

Theheatingsystemshallbeabletoheatthepipecontinuously,unifor專用mlyandfully,withoutcausing

contaminationoroxidizationtothecleanedsurfaces.Medium-frequencyinductionheatershouldbe

usedforheatingexternalsurfaceofthepipe.

6.1.7

Externalsurfacetemperatureofthepipebeforecoatingshallbecontinuouslymonitored

andrecordedbyinfraredsensororcontacttypethermocouple.Temperaturemonitoringinstrument

shallbeprovidedwithalarmdevice.

6.1.8

CoatingequipmentshallbeprovidedwithstaticFBEpowdersprayingdevice,powder

recyclingsystem,continuousairpressuremonitoringandalarmdevice.Thespraygunshallbe

individuallyadjustable.

6.1.9

Extrudershallfeatureadjustableoutput,adjustableextrusiontemperature,fullplasticizationand

uniformextrusion.Theextrudershouldbemovable.

6.1.10

Claddingdiewithnegativepressuredeviceshallbeusedforannularextrudingequipment,

andthecladdingdieshallbeabletoadjustthethicknessofannularmelt.

6.1.11

Flatdiewithadjustablemouthwidthandnipgapshallbeusedforsidewiseextrusion

wrapping.Pressingrollsfeaturingpressureandpositionadjustmentshallbeinstalled.

6.1.12

Dryingeq人人文庫uipmentbeforetheadhesiveandcoatingmaterials(polyethyleneorpolypropylene)

chargingdeviceshallfeatureadjustabledryingtemperature.

6.1.13

Pressure-adjustablepinchingdeviceshouldbeinstalledforcoatingprocedureincircular

extrusioncladdingprocess.

6.1.14

Coatingequipmentshallbeprovidedwithwatercoolingdeviceforadequatecooling.

6.1.15

Finishinglineshallbeinstalledwithon-linepeelingtesterandleakagedetectorwhich

featuresalarmingandcontinuousvoltageadjustment.

6.1.16

Mechanicalequipmentshallbeinstalledforpipeendcleaningproceduretoremovethe

coatingatsteelpipeend.

6.1.17

Externalcoatingmarkingdeviceshallbeinstalledformarkingprocedure,andthemarking

·8·

machineshouldworkautomatically.

6.1.18

Externalcoatinglineshallbeprovidedwithexternalcoatingrepair/patchdevice.

6.2EquipmentforInternalCoatingLine

6.2.1

Theentireinternalcoatinglineshallbeprovidedwithbasicautomationcontrol.

6.2.2

Preheatingequipmentwhichwillnotcausecontaminationtopipesurfaceshallbeinstalled

beforetheinternalsurfacecleaningequipment,andtemperaturemeasuringdeviceshallbeinstalled.

6.2.3

Internalsurfacecleaningequipmentshallbeselectedaccordingtothefollowingrequirements:

1

Insideshotblastingmachineshouldbeinstalledincasethepipediameterislargerthanor

equalto500mm,andinsidesandorshotblastingmachinemaybeusedincasethepipediameteris

smallerthan500mm.

2

Closeddustcollectingbinsshallbeinstalledatbothendsofthepipe,whichshallbeableto

interlockwiththecleaningsystemandprovideautomaticalarming.

3

Abrasiveseparation/screeningandrecyclingfunctionsshallbeprovided.

4

Dustrecyclinganddustfilteringsystemshallbeinstalled.

6.2.4

Dustoninteriorsurfaceofpipeshallbecleanedpriortocoating.Heatingdeviceshallnot

causecontaminationtotheinteriorsurfaceofpipe.

6.2.5

IncaseofFBEpowdercoating,appropriatedeviceshallbeinstalledbeforecoatingto

,專用

providecontinuousmonitoringrecordingandalarmforpipesurfacetemperature.

6.2.6

Speed-adjustablepiperotatingdeviceshallbeinstalledforspraycoating.

6.2.7

FBEpowdercoatingequipmentshallbeselectedaccordingtothefollowingrequirements:

1

Spraygunmovingoppositetothesteelpipeshallbeinstalled,whosespeedisstepless

adjustable.

2

Collectingbinwithpowdercollectingsystemshallbeinstalledatbothendsofthesteel

pipe.

3

Thespraygunshallbeindividuallyadjustable.

6.2.8

Bi-componentliquidcoatingequipmentshallbeselectedaccordingtothefollowingrequirements:

1

Spraygunmovingoppositetothesteelpipeshallbeinstalled,whosespeedisstepless

adjustable.

2

Collectingbinwithinduceddraughtsystemshallbeinstalledonbothendsofthesteelpipe.

3

Incasethepipediameterislargerthanorequalto200mm,high-pressureair-lessspray

coatingsystemshouldbeused.

6.2.9

Solventpu人人文庫rgingdevicewithinduceddraughtsystemshallbeinstalleddownstreamthebi-

componentliquidcoatingequipment.Airsupplysystemshallbeprovidedwithdustfilteringdevice.

6.2.10

Thermosettingdeviceforfinishingshallnotcausecontaminationtotheinternalcoating.

6.2.11

Markingdeviceforinternalcoatingshallbeinstalledformarkingprocedure,andthe

markingmachineshouldworkautomatically.

6.2.12

Devicefortransverseconveyanceofpipesshouldbeprovidedwithliftingmechanism.

6.2.13

Internalcoatinglineshouldbeprovidedwithinternalcoatingrepairdevice.