Id.:E1Id.:E1Rev.0Page1of32SGSItaliaS.p.A.WPQRPED.5976Membridelgru叩oSGSMembridelgru叩oSGSSedeLegale:Milano-ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.M1223913SocietaunipersonalesoggettaadirezioneecoordinamentodiSGSSubholdingBVWELDINGPROCEDUREQUALIFICATIONRECORD(WPQR)Weldingprocedurequalification-TestcertificateManufacturer'sWeldingProcedureSpecificationReferenceNo.:PWPS-THS-01Rev.AManufacturer'sWeldingProcedureSpecificationReferenceNo.:PWPS-THS-01Rev.AInspectionCompany:ReferenceNo.:Manufacturer:TestpieceProductform:Weldingprocess(es):No.1No.2No.3Process135/Partlymech.Dep.metalthk.(mm)Manufacturer:TestpieceProductform:Weldingprocess(es):No.1No.2No.3Process135/Partlymech.Dep.metalthk.(mm)a5,a8WeldingprocessesusedTypeofjointandweld:ParentMetalGroup(s):FWsl/mlISO/TR15608Gr.1.2-1.2ParentMaterialThickness(mm):彡5 Throatthickness(mm):si:3.75to7.5 Singlelayer/multi-run:sl/mlml:NorestrictionPipeOutsideDiameter(mm):D>500mm;D>150mmifinrotatedpositions(PA,PC,PF)NorestrictionFillermaterialsize:1.2mmFillerMetalDesignation:ENISO14341-A,G3Si1Fillermaterialmake:

(GB/T8110-2008ER50-6)Designationofshieldinggas/Flux:Typeofweldingcurrent&polarity:WeldingPosition:PreheatTemperature:Post-heating:ISO14175:M21(82%Ar+18%CO2)DCEP Transfermode:PB>5°CN.A.Designationofbackinggas: N.A.Allexceptshort-circuitInterpassTemperature:彡230.CAddress:No.18,XiaozhanIndustrialZoneNo.6Road,XiaozhanTown,JinnanDistrict,Tianjin,P.R.ChinaCode/TestingStandard:UNIENISO15614-1:2017+A1-2019Level(*): 2DateofweldingDec.02,2020TianjinTaiheshengIntelligentEquipmentCo.,Ltd.RangeofqualificationPlate-StandardtestpieceOnNotifiedBodyN°1381BehalfofBusinessM.CampanellaOnNotifiedBodyN°1381BehalfofBusinessM.CampanellaPostWeldHeatTreatmentand/orAgeing:Annealing550±20°C/3hOtherInformation:(seealso8.5)HeatInput:Refertoitem8.4.7,ENISO15614-1:2017Level2Filletthroatthickness:Norestrictiononlyformultipass(*)Note:Level2satisfiesLevel1requirementsWeconfirmthatthestatementsinthisrecordarecorrectandthatthetestpieceswereprepared,welded,testedandhavefulfilledtherequirementsinaccordancewithISO15614-1SGSJobNoIN-TJ-5805-20087SGSref.18.14672DateofIssue:Dec.18th,2020Location:DateofIssue:Dec.18th,2020ViaCaldera,21-20153Milano-Italyt+390273931f+390270124630esgs.italy@www.sgsgroup.itId.:E2Id.:E2Rev.0Page2of32SGSItaliaS.p.A.WPQRPED.5976SedeLegale:MilanoSedeLegale:Milano-ViaCaldera.21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc,n.MI223913SocietaunipersonalesoggettaadirezioneecoordinamentodiSGSSubhoidingBVDETAILSOFWELDTESTDETAILSOFWELDTESTRecordofweldtestInspectionCompany:InspectionCompany:ReferenceNo.:ReferenceNo.: PWPS-THS-01Rev.AJointDesign WeldingSequencesJointDesign WeldingSequencesManufacturer:TianjinTaiheshengIntelligentEquipmentCo.,Ltd. DateofWelding:Dec.02,2020Location:WorkshopPreparationandCleaning:Machining&GrindingWelder'sName:LiDeqingParentMetalSpecification:GB/T1591-2008Q345EWeldingProcess:to135((MAG,Partlymech.) GB/T1591-2008Q345EParentMaterialThickness(mm):30JointType:FWsl/ml PipeOutsideDiameter(mm):N.A.WeldPreparationDetails(Sketch)*:WeldingPosition:PBGas/Flux-Shielding: ISO14175BackingGas/Flux-Shielding: ISO14175Backing: N.A.GasFlowRate-Shielding:Backing:TungstenElectrodeType/Size:DetailsofBackGouging/Backing:PreheatTemperature:InterpassTemperature:Post-heating:PostWeldHeatTreatmentand/orA(Time,Temperature,Method:HeatingandCoolingRates*:Branchconnectionanglealfa::M21(82%Ar+18%CO2)22L/MinN.A.N.A.N.A.^5°C彡230.CN.A.geing:Annealing550°C/3h,ElectricfurnaceHeating:^220°C/hN.A.Weaving(maximumwidthofrun): N.A.Oscillation:amplitude,frequency,dwelltime:N.A.Pulseweldingdetails: N.A.Distancecontacttybe/workpiece:N.A.Plasmaweldingdetails: N.A.TorchangleN.AWeldingEquipment:KR-500Cooling:彡275.C/hTheabovetestpiecewasweldedinthepresenceof:AndyZhaoApprovedby:RunProcess/MetalTransferSizeofFillerMetalmmCurrentAVoltageVCurrent/PolarityWireFeedSpeed*m/minTravelSpeedmm/minHeatInput*KJ/mm11351.226030DCEPn.a.3601,0421351.226030DCEPn.a.4200,8931351.226030DCEPn.a.4800,7841351,226030DCEPn.a.4800,78IfrequiredType,Designation,Tradename:TianJinGoldenBridgeWeldingMaterialsGroupCo”LtdAnySpecialBakingorDrying:N.A. Otherinformation*: SprayFillerMetal:Solidwire/GB/T8110-2008ER50-6ViaCaldera,21-20153Milano-Italyt+390273931f+390270124630esgs.italy@www.sgsgroup.itMembridelgruppoSGSId.:E3Id.:E3Rev.0Page3of32InspectionCompany: SGSItaliaS.p.A.ReferenceNo.:WPQRPED.5976MembriSedeLegale:Milano~ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.MI223913SocietaunipersonalesoqqettaadirezioneecoordinamentodiSGSSubholdinqBVMembriSedeLegale:Milano~ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.MI223913SocietaunipersonalesoqqettaadirezioneecoordinamentodiSGSSubholdinqBVRadiography*Radiography*:N.A.UltrasonicExamination*:N.A.Temperature:20°CTESTRESULTSManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-01Rev.AVisualExamination: SatisfactoryPenetrant/MagneticParticleTest*: PTSatisfactoryTensileTests N.A.MacroExamination: SatisfactoryMicroExamination*: N.A.IfrequiredHardnessTests*HardnessTests*LocationofMeasurements(Sketch*)SeeMechanicalTestReportValues:-ParentMetal:139to178164to178H.A.Z.:192to276179to301Type/Load:HV10(ml)HV10(sl)WeldMetal: 202to208217to228OtherTests:NoneRemarks:NoneTestsCarriedoutinaccordancewiththerequirementsof:UNIENISO15614-1:2017+A1-2019LaboratoryReportReferenceNumber:NDEReport:IN-TJ-H-5805-20087-VT-1,IN-TJ-H-5821-20108-1PTMechanicalReport:TJIN2012017805MLTestresultswereacceptable:YesTestCarriedoutinthepresenceof:SGS(TJ)LabViaCaldera,21-20153Milano-Italyt+390273931f+390270124630eApprovedby:M.Cam|Id.:E1Id.:E1Rev.0Page1of32SGSItaliaS.p.A.WPQRPED.5977MembridelgruppoSGSSedeLegale:Milano—MembridelgruppoSGSSedeLegale:Milano—ViaCaldera.21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.MI223913SocietaunipersonalesoggettaadirezioneecoordinamentodiSGSSubholdingBVWELDINGPROCEDUREQUALIFICATIONRECORD(WPQR)Weldingprocedurequalification-TestcertificateManufacturer'sWeldingProcedureSpecification InspectionCompany:ReferenceNo.:PWPS-THS-02Rev.A ReferenceNo.ReferenceNo.:Manufacturer:Manufacturer:Address:Code/Address:Code/TestingStandard:DateofweldingNo.18,XiaozhanIndustrialZoneNo.6Road,XiaozhanTown,JinnanDistrict,Tianjin,P.R.ChinaUNIENISO15614-1:2017+A1-2019Level(*): 2Dec.02,2020RangeofqualificationTestpiecePlate-StandardtestpieceProductform:Plate-StandardtestpieceWeldingprocess(es):No.1No.2No.3Process135/Partlymech.Dep.metalthk.(mm)30WeldingprocessesusedTypeofjointandweld:ParentMetalGroup(s):BWbs,BWmbml,FWISO/TR15608Gr.1.2-1.2ParentMaterialThickness(mm):15to60 Throatthickness(mm):Norestriction Singlelayer/multi-run:mlPipeOutsideDiameter(mm):D>500mm;D>150mmifinrotatedpositions(PA,PC,PF)FillerMetalDesignation:ENISO14341-A,G3Si1Fillermaterialmake:NorestrictionFillermaterialsize:1.2mm(GB/T8110-2008ER50-6)Designationofshieldinggas/Flux:Typeofweldingcurrent&polarity:ISO14175:M21(82%Ar+18%CO2)DCEPDesignationofbackinggas:Transfermode:AllcircuitN.A.WeldingPosition:PAPreheatTemperature:>5°CInterpassTemperature:彡230°CPost-heating:N.A.PostWeldHeatTreatmentand/orAgeing:Annealing550±20°C/3hOtherInformation:(seealso8.5)HeatInput:土：Refertoitem8.4.7,ENISO15614-1:2017Level2Filletthroatthickness:NorestrictiononlyformultipassFilletweldmaterialthickness:彡5mm(*)Note:Level2satisfiesLevel1requirementsWeconfirmthatthestatementsinthisrecordarecorrectandthatthetestpieceswereprepared,welded,testedandhavefulfilledtherequirementsinaccordancewithISO15614-1SGSJobNoIN-TJ-5805-20087 OnBehalfofBusinessManagerSGSref.18.14672 M.CampanellaLocation:Malcontenta(VE)DateofIssue:Dec.18th,2020NotifiedBodyN°1381ViaCaldera,21-20153Milano-Italyt+390273931f+390270124630esgs.italy@www.sgsgroup.itId.:E3Rev.Id.:E3Rev.0Page3of32InspectionCompany: SGSItaliaS.p.A.ReferenceNo.: WPQRPED.5977SedeLegale:MilanoSedeLegale:Milano-ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.I$cr.Reg.!mpr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.MI223913SocietaunipersonaiesoaqettaadirezioneecoordinamentodiSGSSubholdinaBVId.:Id.:E2Rev.0Page2of32SedeLegale:MilanoSedeLegale:Milano-ViaCaldera.21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.MJ223913SocietaunipersonalesoggettaadirezioneecoordinamentodiSGSSubholdingBVDETAILSOFWELDTESTRecordofweldtestManufacturer'sWeldingProcedureSpecification InspectionCompany:ReferenceNo.:PWPS-THS-02Rev.A ReferenceNo.:Manufacturer:TianjinTaiheshengIntelligentEquipmentCo”Ltd. DateofWelding:Dec.02,2020Location:WorkshopPreparationandCleaning:Machining&GrindingWelder'sName:LiDeqingParentMetalSpecification:GB/T1591-2008Q345EWeldingProcess:135((MAG,Partlymech.)toGB/T1591-2008Q345EParentMaterialThickness(mm):30JointType:BWbsmlPipeOutsideDiameter(mm):N.A.WeldPreparationDetails(Sketch)*: WeldingPosition:PAJointDesign WeldingSequencesType,Designation,Tradename:TianJinGoldenBridgeWeldingMaterialsGroupCo”LtdAnySpecialBakingorDrying:N.A. Otherinformation*: Shortcircuit,SprayWeaving(maximumwidthofrun):Type,Designation,Tradename:TianJinGoldenBridgeWeldingMaterialsGroupCo”LtdAnySpecialBakingorDrying:N.A. Otherinformation*: Shortcircuit,SprayWeaving(maximumwidthofrun):N.A.Oscillation:amplitude,frequency,dwelltime:N.A.Pulseweldingdetails: N.A.Gas/Flux-Shielding: ISO14175Backing: N.A.GasFlowRate-Shielding:Backing:TungstenElectrodeType/Size:DetailsofBackGouging/Backing:PreheatTemperature:InterpassTemperature:Post-heating:PostWeldHeatTreatmentand/orA(Time,Temperature,Method:HeatingandCoolingRates*:Branchconnectionanglealfa::M21(82%Ar+18%CO2)22L/MinN.A.N.A.Backgouging彡5°C^230°CN.A.^eing:Annealing550°C/3h,ElectricfurnaceHeating:^220°C/hN.A.Distancecontacttybe/workpiece:N.A.Plasmaweldingdetails:N.A.Torchangl(N.AWeldingEquipment:KR-500Cooling:^275°C/hWeldingDetailsRunProcess/MetalTransferSizeofFillerMetalmmCurrentAVoltageVCurrent/PolarityWireFeedSpeed*m/minTravelSpeedmm/minHeatI叩ut*KJ/mm11351.216022DCEPn.a.3000,562?191351.228032DCEPn.a.300-4201.02?1.4320-221351,228032DCEPn.a.300-4201.02-1.43*IfrequiredFillerMetal: Solidwire/GB/T8110-2008ER50-6Theabovetestpiecewasweldedinthepresenceof:AndyZhaoViaCaldera,21-20153Milano-Italyt+390273931f+390270124630esgs.italy@www.sgsgroup.itMembridelgruppoSGS

TESTRESULTSManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-02Rev.AVisualExamination: SatisfactoryPenetrant/MagneticParticleTest*: PTSatisfactoryTensileTests SatisfactoryRadiography*:N.A.UltrasonicExamination*:SatisfactoryTemperature:20°CType/NoReN/mm2RmN/mm2AVisualExamination: SatisfactoryPenetrant/MagneticParticleTest*: PTSatisfactoryTensileTests SatisfactoryRadiography*:N.A.UltrasonicExamination*:SatisfactoryTemperature:20°CType/NoReN/mm2RmN/mm2A%onZ%FractureLocationRemarksRequirement彡4701-11-2573568ParentmetalParentmetalPassPassBendTestsType/NoBendAngleElongation*ResultSideBend180°SatisfactorySideBend180°SatisfactorySideBend180°SatisfactorySideBend180°SatisfactoryFormerDiameter:4tMacroExamination:MicroExamination*SatisfactoryN.A.NotchLocation/DirectionTemp.ValuesAverageRemarks°C123JWeld-4055746966PassHAZ-40110159120129PassImpactTest*Type:CharpyV-notchSize{mm):55X10X10Requirement: ^34JIfrequiredHardnessTests*LocationofMeasurements(Sketch*)SeeMechanicalTestReportType/Load:Values:-ParentMetal:H.A.Z.:WeldMetal:HV10160to257174to287179to217OtherTests:NoneRemarks:NoneUNIENISO15614-1:2017+A1-2019LaboratoryReportReferenceNumber:NDEReport:IN-TJ-H-5805-20087-VT-1,IN-TJ-H-5821-20108-2PTIN-TJ-H-5821-20108-2UT,MechanicalReport:TJIN2012017806MLTestsCarriedoutinaccordancewiththerequirementsof:Id.: E4Id.: E4Rev.0Page1of13MembridelgruppoSGSSedeLegale:Milano-MembridelgruppoSGSSedeLegale:Milano-ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMln.1463706Cod.Mecc.n.M1223913SocietaunipersonalesoqqettaadirezioneecoordinamentodiSGSSubholdinaBV1 WELDER'SQUALIFICATIONTESTCERTIFICATE2Designation:ENISO9606-1135PFWFM1St30PBml/slManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-01Rev.AInspectionCompany:ReferenceNo.:SGSItaliaS.p.A.W.PED.21144Welder'sName:Identification:MethodofIdentification:Dateandplaceofbirth:Employer:Code/TestingStandard:LiDeqindentificationCard/punchingFeb.10th,1970/ChinaTianjinTaiheshengIntelligentEquipmentCo.,Ltd.ENISO9606-1:201713TestpieceRangeofqualification14Weldingprocess(es):135135.138Transfermode1 WELDER'SQUALIFICATIONTESTCERTIFICATE2Designation:ENISO9606-1135PFWFM1St30PBml/slManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-01Rev.AInspectionCompany:ReferenceNo.:SGSItaliaS.p.A.W.PED.21144Welder'sName:Identification:MethodofIdentification:Dateandplaceofbirth:Employer:Code/TestingStandard:LiDeqindentificationCard/punchingFeb.10th,1970/ChinaTianjinTaiheshengIntelligentEquipmentCo.,Ltd.ENISO9606-1:201713TestpieceRangeofqualification14Weldingprocess(es):135135.138TransfermodeSprayGlobular,spray,pulse15Producttype(plateorpipe):PlatePlate,pipe16Typeofweld:FWFW17Parentmetalgroup(s)/subgroups:1.2(Q345EGB/T1591-2008)1to1118Fillermetalgroup(s)FM1FM1,FM2Fillermaterial(Designation):S(GB/T8110-2008ER50-6)S,M19Shieldinggas/flux:ISO14175-M21(82%Ar+18%CO2)—20Auxiliaries:TypeofcurrentandpolarityDCEP 21Materialthickness(mm):30FW彡322Depositedthickness(mm):Outsidepipediameter(mm):a5/a8Rotatingpipe彡75，Fixedpipe彡50023Weldingposition:PBPA,PB24Welddetails:Multi-layer/singlelayerml,siml,si12Jobknowledge: NottestedSuplementaryfilletweldtest(completedinconjuntionwithabuttweldqualification):acceptable/notacceptableN/A(SampleNo.:PQR-1)25Additionalinformation:SGSref.18.14672OnBehalfofBusinessManager27,28TypeoftestAcceptableNotRequired30VisualIN-TJ-H-5805-20087-VT-131RadiographyX32MagneticParticle/X/DyePenetrantIN-TJ-H-5821-20108-1PT33MacroTJIN2012017805ML34FractureX35BendtestX36Additionaltests*X26Approvedby:NotifiedBodyN°:Dateofwelding:M.Campanella1381Dec.02,2020Revalidation9.3a)Validuntil//*AppendseparatesheetifrequiredRevalidation9.3b)XValiduntilDec.01,2022Dateofissue:Dec.18,2020Malcontents(VE)(ITALY)Validuntil37-38RevalidationforqualificationbyexaminingBodyDateSignaturePositionforthefollowingtwoyears(referto9.3b)DatesignaturePosition錢.鐵Confirmationofthevaliditybysupervisorforthefollowing6months(referto9.2)ViaCaldera,21-20153Milano-Italyt+390273931f+390270124630esgs.italy@www.sgsgroup.it33MembridelgruppoSGSSedeLegale:Milano-MembridelgruppoSGSSedeLegale:Milano-ViaCaldera,21Cap.Soc.€2.500.000i.v.C.F./N.Iscr.Reg.Impr.diMilano04112680378P.IVAn.11370520154REAMin.1463706Cod.Mecc.n.M1223913SocietaunipersonalesoqqettaadirezioneecoordinamentodiSGSSubholdinqBV1 WELDER'SQUALIFICATIONTESTCERTIFICATE2Designation:ENISO9606-1135PBWFM1St30PAbsManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-02Rev.AInspectionCompany:ReferenceNo.:Id.:E4Rev.0Page1of1SGSItaliaS.p.A.W.PED.21145Welder'sName:Identification:MethodofIdentification:Dateandplaceofbirth:Employer:Code/TestingStandard:Jobknowledge:OnBehalfofBusinessManager1 WELDER'SQUALIFICATIONTESTCERTIFICATE2Designation:ENISO9606-1135PBWFM1St30PAbsManufacturer'sWeldingProcedureSpecificationReferenceNo.: PWPS-THS-02Rev.AInspectionCompany:ReferenceNo.:Id.:E4Rev.0Page1of1SGSItaliaS.p.A.W.PED.21145Welder'sName:Identification:Met