Standards for Welding and Fabrication TWI

Copyright TWI Ltd 2010Technology Engineering

Standards Available for the Plastics Standards Available for the Plastics Welding and Fabrication IndustryWelding and Fabrication Industry

Mike TroughtonMike TroughtonTWI LtdTWI Ltd


ContentsContents Standards on welding and fabrication of Standards on welding and fabrication of

plasticsplastics Tanks and vesselsTanks and vessels PipesPipes Lining membranesLining membranes

Standards on mechanical and nonStandards on mechanical and non--destructive testing of plastics weldsdestructive testing of plastics welds

Standards on training and qualification of Standards on training and qualification of plastics weldersplastics welders


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsTanks and VesselsTanks and Vessels European StandardsEuropean Standards

CEN/TC249 (Plastics) /SC5 (Welding of CEN/TC249 (Plastics) /SC5 (Welding of thermoplastics materials)thermoplastics materials)

WG1: Characteristic valuesWG1: Characteristic values WG6: Welding machines for thermoplastics WG6: Welding machines for thermoplastics

materialsmaterials WG8: Quality assessment for thermoplastics WG8: Quality assessment for thermoplastics

weldswelds Now CEN/TC249/WG16 (Thermoplastics welding)Now CEN/TC249/WG16 (Thermoplastics welding) CEN/TC266 (Thermoplastic static tanks)CEN/TC266 (Thermoplastic static tanks)


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsWG1: Characteristic valuesWG1: Characteristic values UK Principal Expert: UK Principal Expert:

Seamus Quinn (Seamus Quinn (ChemChem Resist)Resist) Standards:Standards:

EN 1778:2000 Characteristic values for welded EN 1778:2000 Characteristic values for welded thermoplastic constructions thermoplastic constructions Determination of Determination of allowable stresses and allowable stresses and modulimoduli for design of for design of thermoplastic equipmentthermoplastic equipment

EN 12943:2000 Filler materials for thermoplastics EN 12943:2000 Filler materials for thermoplastics Scope, designation, requirements, testsScope, designation, requirements, tests


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsWG6: Welding machinesWG6: Welding machines UK Principal Expert: UK Principal Expert:

Tom Hill (British Gas)Tom Hill (British Gas) Mike Troughton (TWI)Mike Troughton (TWI)

Standards:Standards: EN 13705:2004 Welding of thermoplastics EN 13705:2004 Welding of thermoplastics

Machines and equipment for hot gas welding Machines and equipment for hot gas welding (including extrusion welding)(including extrusion welding)


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsWG8: Quality assessmentWG8: Quality assessment UK Principal Expert: UK Principal Expert:

Mike Troughton (TWI)Mike Troughton (TWI) Standards:Standards:

EN 14728:2005 Imperfections in thermoplastic EN 14728:2005 Imperfections in thermoplastic welds. Classificationwelds. Classification

Under developmentUnder development Quality levels for imperfections in thermoplastics Quality levels for imperfections in thermoplastics

welded jointswelded joints


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsCEN/TC266: Thermoplastic static tanksCEN/TC266: Thermoplastic static tanks Standards:Standards:

EN 12573:2000 Welded static nonEN 12573:2000 Welded static non--pressurized thermoplastic pressurized thermoplastic tankstanks Part 1: General principlesPart 1: General principles Part 2: Calculation of vertical cylindrical tanksPart 2: Calculation of vertical cylindrical tanks Part 3: Design and calculation for single skin rectangular Part 3: Design and calculation for single skin rectangular tankstanks Part 4: Design and calculation of flanged jointsPart 4: Design and calculation of flanged joints

EN 13341:2005 Thermoplastics static tanks for above ground EN 13341:2005 Thermoplastics static tanks for above ground storage of domestic heating oils, kerosene and diesel fuels. storage of domestic heating oils, kerosene and diesel fuels. Blow moulded polyethylene, rotationally moulded polyethylene Blow moulded polyethylene, rotationally moulded polyethylene and polyamide 6 by anionic polymerization tanks. Requirements and polyamide 6 by anionic polymerization tanks. Requirements and test methodsand test methods EN 13575:2004 Thermoplastics tanks made from blow or EN 13575:2004 Thermoplastics tanks made from blow or rotational moulded polyethylene. Tanks for the above ground rotational moulded polyethylene. Tanks for the above ground storage of chemicals. Requirements and test methodsstorage of chemicals. Requirements and test methods


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsTanks and VesselsTanks and Vessels DVS GuidelinesDVS Guidelines

DVS 2205 Design calculations for containers and DVS 2205 Design calculations for containers and apparatus made from thermoplasticsapparatus made from thermoplastics

Part 1: Characteristic valuesPart 1: Characteristic values Part 2: Vertical round, nonPart 2: Vertical round, non--pressurised tankspressurised tanks Part 3: Welded jointsPart 3: Welded joints Part 4: Flanged jointsPart 4: Flanged joints Part 5: Rectangular tanksPart 5: Rectangular tanks

DVS 2231:2008 AboveDVS 2231:2008 Above--ground tanks, apparatus ground tanks, apparatus and piping made of thermoplastics and piping made of thermoplastics Guide to Guide to quality assurancequality assurance


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsTanks and VesselsTanks and Vessels DVS GuidelinesDVS Guidelines

DVS 2207 Welding of thermoplasticsDVS 2207 Welding of thermoplastics Part 1: Heated tool weldingPart 1: Heated tool welding Part 3: Hot gas stringPart 3: Hot gas string--bead welding and hot gas bead welding and hot gas

welding with torch separate from filler rodwelding with torch separate from filler rod Part 4: Extrusion weldingPart 4: Extrusion welding

DVS 2227DVS 2227--1:2004 Welding of semi1:2004 Welding of semi--finished finished products made of highproducts made of high--density polyethylene (PEdensity polyethylene (PE--HD) for the sealing of concrete structures in the HD) for the sealing of concrete structures in the field of ground water protection and for corrosion field of ground water protection and for corrosion protectionprotection


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsPipesPipes Large number of standards and specificationsLarge number of standards and specifications For polyethylene pipes:For polyethylene pipes:

European StandardsEuropean Standards EN 1555 Plastics piping systems for the supply of EN 1555 Plastics piping systems for the supply of

gaseous fuels. Polyethylene (PE)gaseous fuels. Polyethylene (PE) EN 12201 Plastics piping systems for water supply. EN 12201 Plastics piping systems for water supply.

Polyethylene (PE)Polyethylene (PE) EN 12666 Plastics piping systems for nonEN 12666 Plastics piping systems for non--pressure pressure

underground drainage and sewerage. Polyethylene (PE)underground drainage and sewerage. Polyethylene (PE) EN 13244 Plastic piping systems for buried and EN 13244 Plastic piping systems for buried and

aboveground pressure systems for water for general aboveground pressure systems for water for general purposes, drainage and sewerage. Polyethylene (PE)purposes, drainage and sewerage. Polyethylene (PE)


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsPipesPipes International StandardsInternational Standards

ISO 4427 Polyethylene (PE) pipes for water supplyISO 4427 Polyethylene (PE) pipes for water supply ISO 8085 Polyethylene fittings for use with polyethylene pipes fISO 8085 Polyethylene fittings for use with polyethylene pipes for or the supply of gaseous fuels. Metric seriesthe supply of gaseous fuels. Metric series ISO/TS 10839:2000 Polyethylene pipes and fittings for the supplyISO/TS 10839:2000 Polyethylene pipes and fittings for the supplyof gaseous fuels of gaseous fuels Code of practice for design, handling and Code of practice for design, handling and installationinstallation ISO 12176 Plastics pipes and fittings. Equipment for fusion ISO 12176 Plastics pipes and fittings. Equipment for fusion jointing polyethylene systemsjointing polyethylene systems

Part 1: Butt fusionPart 1: Butt fusion Part 2: ElectrofusionPart 2: Electrofusion

ISO 21307:2009 Plastics pipes and fittings. Butt fusion jointingISO 21307:2009 Plastics pipes and fittings. Butt fusion jointingprocedures for polyethylene (PE) pipes and fittings used in the procedures for polyethylene (PE) pipes and fittings used in the construction of gas and water distribution systems (construction of gas and water distribution systems (withdrawn withdrawn 20102010))


Welding and Fabrication of PlasticsWelding and Fabrication of PlasticsLining MembranesLining Membranes DVS guidelinesDVS guidelines

DVS 2225DVS 2225--1:1991 Joining of lining membranes 1:1991 Joining of lining membranes made from polymeric materials (made from polymeric materials (geomembranesgeomembranes) ) in geotechnical and hydraulic application in geotechnical and hydraulic application Welding, bonding by adhesives, vulcanisingWelding, bonding by adhesives, vulcanising

DVS 2225DVS 2225--4:2006 Welding of sealing sheets 4:2006 Welding of sealing sheets made of polyethylene (PE) for the sealing of made of polyethylene (PE) for the sealing of dumps and contaminated sites dumps and contaminated sites


Mechanical and NonMechanical and Non--destructive Testing destructive Testing of Plastics Weldsof Plastics Welds

European standardsEuropean standards ISO standardsISO standards Other standards/specificationsOther standards/specifications



European standardsEuropean standards CEN/TC249/SC5/WG2 (Testing of welded joints)CEN/TC249/SC5/WG2 (Testing of welded joints) UK Principal Expert: Mike Troughton (TWI)UK Principal Expert: Mike Troughton (TWI) Mechanical tests:Mechanical tests:

EN 12814EN 12814--1:2000 Bend test1:2000 Bend test EN 12814EN 12814--2:2000 Tensile test2:2000 Tensile test EN 12814EN 12814--3:2000 Tensile creep test3:2000 Tensile creep test EN 12814EN 12814--4:2001 Peel test4:2001 Peel test EN 12814EN 12814--5:2000 Macroscopic examination5:2000 Macroscopic examination EN 12814EN 12814--6:2000 Low temperature tensile test6:2000 Low temperature tensile test EN 12814EN 12814--7:2002 Tensile test with 7:2002 Tensile test with waistedwaisted test specimentest specimen EN 12814EN 12814--8:2001 Requirements8:2001 Requirements


Bend testBend testH0 i

f

= i - fH = Hf - H0

Hf



Type 1

Tensile testTensile test


Type 2


Tensile creep testTensile creep test

Test Tank

Specimen

Dead Weight



Peel testPeel test TT--peelpeel

b

an

Li Lcweld

weld



Peel testPeel test DecohesionDecohesion testtest



Peel testPeel test Crush testCrush test

> 5Dn

> 5Dn

Pipe

Coupler

Vice

5mm



Low temperature Low temperature tensile testtensile test

Tensile test with Tensile test with waistedwaisted test test specimenspecimen



RequirementsRequirements Bend testBend test

0

20

40

60

80

100

120

140

160

180

0 5 10 15 20 25 30 35

Specimen thickness, mm

B

e

n

d

a

n

g

l

e

,

d

e

g

r

e

e

s

Heated tool

Hot gas/ extrusion

Minimum bend angle for PEMinimum bend angle for PE



Minimum short-term tensile welding factor, s Process

PE PP PVC-U PVC-C PVDF Heated Tool 0.9 0.9 0.9 0.8 0.9 Hot Gas 0.8 0.8 0.8 0.7 0.8 Extrusion 0.8 0.8 ns ns ns

RequirementsRequirements

ns = not specified

Minimum long-term tensile welding factor, l Process

PE PP PVC-U PVC-C PVDF Heated Tool 0.8 0.8 0.6 0.6 0.6 Hot Gas 0.4 0.4 0.4 0.4 0.4 Extrusion 0.6 0.6 ns ns ns

Tensile Tensile testtest

Tensile Tensile creep testcreep test




European standardsEuropean standards CEN/TC249/SC5/WG2 (Testing of welded CEN/TC249/SC5/WG2 (Testing of welded

joints)joints) NonNon--destructive tests:destructive tests:

EN 13100EN 13100--1:2000 Visual examination1:2000 Visual examination EN 13100EN 13100--2:2004 X2:2004 X--ray radiographic testingray radiographic testing EN 13100EN 13100--3:2004 Ultrasonic testing3:2004 Ultrasonic testing prENprEN 1310013100--4 High voltage testing4 High voltage testing



ISO standardsISO standards ISO 1167 Thermoplastics pipes, fittings and ISO 1167 Thermoplastics pipes, fittings and

assemblies for the conveyance of fluids. assemblies for the conveyance of fluids. Determination of the resistance to internal pressureDetermination of the resistance to internal pressure

ISO 13953: 2001 Polyethylene (PE) pipes and ISO 13953: 2001 Polyethylene (PE) pipes and fittings. Determination of the tensile strength and fittings. Determination of the tensile strength and failure mode of test pieces from a buttfailure mode of test pieces from a butt--fused jointfused joint

Brittle Mixed Ductile



ISO standardsISO standards ISO 13954:1997 Plastics pipes and ISO 13954:1997 Plastics pipes and

fittings. Peel fittings. Peel decohesiondecohesion test for test for polyethylene (PE) electrofusion polyethylene (PE) electrofusion assemblies of nominal outside diameter assemblies of nominal outside diameter greater than or equal to 90mmgreater than or equal to 90mm

Tensioning chain/rope

Coupler

Pipe



ISO standardsISO standards ISO 13955:1997 Plastics ISO 13955:1997 Plastics

pipes and fittings. Crushing pipes and fittings. Crushing decohesiondecohesion test for test for polyethylene (PE) polyethylene (PE) electrofusion assemblieselectrofusion assemblies

Pipe

Coupler ISO 13957:1997 Plastics ISO 13957:1997 Plastics

pipes and fittings. pipes and fittings. Polyethylene (PE) tapping Polyethylene (PE) tapping tees. Test method for tees. Test method for impact resistanceimpact resistance



Other standards/specificationsOther standards/specifications Lining membranesLining membranes

ASTM D4437:1999 Standard practice for determining the ASTM D4437:1999 Standard practice for determining the integrity of field seams used in joining flexible polymeric sheeintegrity of field seams used in joining flexible polymeric sheet t geomembranesgeomembranes

ASTM D6392:1999 Standard test method for determining the ASTM D6392:1999 Standard test method for determining the integrity of integrity of nonreinforcednonreinforced geomembrane seams produced geomembrane seams produced using thermousing thermo--fusion methodsfusion methods

DVS 2226 Testing of fused joints on liners of polymer materialsDVS 2226 Testing of fused joints on liners of polymer materials Part 1: Testing procedure, requirementsPart 1: Testing procedure, requirements Part 2: Lap shear testPart 2: Lap shear test Part 3: Peeling testPart 3: Peeling test Part 4: Tensile creep test on PEPart 4: Tensile creep test on PE


Training and Qualification Training and Qualification of Plastics Weldersof Plastics Welders

EN 13067:2003 Plastics welding personnel EN 13067:2003 Plastics welding personnel Qualification testing of welders Qualification testing of welders Thermoplastics Thermoplastics welded assemblieswelded assemblies

EWF 581EWF 581--01:2004 Minimum requirements for the 01:2004 Minimum requirements for the education, examination and certification of European education, examination and certification of European Plastics WeldersPlastics Welders

AWS B2.4:2006 Specification for welding procedure AWS B2.4:2006 Specification for welding procedure and performance qualification for thermoplasticsand performance qualification for thermoplastics

ISO/TR 19480:2005 Polyethylene pipes and fittings ISO/TR 19480:2005 Polyethylene pipes and fittings for the supply of gaseous fuels or water for the supply of gaseous fuels or water Training Training and assessment of fusion operatorsand assessment of fusion operators


Welding processesWelding processes Hot gasHot gas

Round nozzleRound nozzle High speed nozzleHigh speed nozzle WedgeWedge

ExtrusionExtrusion Heated toolHeated tool

ButtButt SaddleSaddle SocketSocket WedgeWedge

MaterialsMaterials Sheet, pipe and Sheet, pipe and fittingsfittings

PVCPVC PPPP PEPE PVDFPVDF ECTFE, FEP, PFAECTFE, FEP, PFA

Lining membraneLining membrane PEPE PVCPVC--PP ECBECB

EN 13067EN 13067

ElectrofusionElectrofusion SocketSocket SaddleSaddle



EN 13067 EN 13067 Welding categoriesWelding categories 39 categories39 categories

Defined by material, product type, dimensions and welding procesDefined by material, product type, dimensions and welding processs Polypropylene:Polypropylene:

Electrofusion (socket)Electrofusion (socket)All diametersAll diametersPipePipe2.72.7Heated tool (socket)Heated tool (socket)All diametersAll diametersPipePipe2.62.6Heated tool (butt)Heated tool (butt)Diameter > 315mmDiameter > 315mmPipePipe2.52.5Heated tool (butt)Heated tool (butt)Diameter Diameter 315mm315mmPipePipe2.42.4Heated tool (butt)Heated tool (butt)Thickness Thickness 3mm3mmSheetSheet2.32.3ExtrusionExtrusionThickness Thickness 3mm3mmSheetSheet2.22.2Hot gas (high speed nozzle)Hot gas (high speed nozzle)All thicknessesAll thicknessesSheetSheet2.12.1Welding processWelding processDimensionsDimensionsProduct typeProduct typeCategoryCategory



EN 13067 EN 13067 Examination entry requirementsExamination entry requirements Completed an Apprenticeship as a plastics Completed an Apprenticeship as a plastics

fabricator, orfabricator, or At least two years experience as a plastics At least two years experience as a plastics

welder (Employer verification), orwelder (Employer verification), or Completed a technical and practical training Completed a technical and practical training

course in preparation for the examinationcourse in preparation for the examination



EN 13067 EN 13067 Examination procedureExamination procedure Theoretical testTheoretical test

Minimum of 20 multipleMinimum of 20 multiple--choice choice questionsquestions

Relevant to the categories Relevant to the categories being takenbeing taken

Practical testPractical test Welding a standard testWelding a standard test--piece piece

for each category being takenfor each category being taken



EN 13067 EN 13067 Examination procedureExamination procedure Theoretical testTheoretical test

Correct preparation of work piecesCorrect preparation of work pieces Types of imperfectionsTypes of imperfections Operation of welding and ancillary equipmentOperation of welding and ancillary equipment Health & safetyHealth & safety Characteristics of thermoplastics usedCharacteristics of thermoplastics used NonNon--destructive and destructive testsdestructive and destructive tests Preventing and correcting welding faultsPreventing and correcting welding faults Welding procedure specification/welding Welding procedure specification/welding

record sheetrecord sheet



Practical testPractical test Hot gas/extrusionHot gas/extrusion

450

PVCPVC 5mm sheet, single V 5mm sheet, single V

PP/PEPP/PE Hot gas: 10mm sheet, Hot gas: 10mm sheet,

double Vdouble V Extrusion: 10mm sheet, Extrusion: 10mm sheet,

single V with backing runsingle V with backing run PVDFPVDF

4mm sheet, single V4mm sheet, single V

EN 13067 EN 13067 Examination procedureExamination procedure

125 125



EN 13067 EN 13067 Assessment of examinationAssessment of examination Theoretical testTheoretical test

Pass mark: 80%Pass mark: 80%

Welds in lining membranesWelds in lining membranesEN 12814EN 12814--44TT--peelpeelSocket welds in small diameter pipeSocket welds in small diameter pipeEN 12814EN 12814--44CrushCrushSocket welds in large diameter pipeSocket welds in large diameter pipeEN 12814EN 12814--44DecohesionDecohesion

Hot gas welds in ECTFE sheetHot gas welds in ECTFE sheetHeated tool butt welds in PE and ECTFE pipeHeated tool butt welds in PE and ECTFE pipeEN 12814EN 12814--22TensileTensile

All welds in sheet except ECTFEAll welds in sheet except ECTFEHeated tool butt welds in PP and PVDF pipeHeated tool butt welds in PP and PVDF pipeEN 12814EN 12814--11BendBendExamination categoriesExamination categoriesRelevant standardRelevant standardMechanical testMechanical test

Practical testPractical test Test piece visually examinedTest piece visually examined Specimens cut from test piece and Specimens cut from test piece and mechanically testedmechanically tested



Hot gas/extrusionHot gas/extrusion50

Six bend test specimens cut Six bend test specimens cut from remaining test piecefrom remaining test piece

Each specimen subjected Each specimen subjected to a bend testto a bend test

Ends of test piece discardedEnds of test piece discarded

EN 13067 EN 13067 Assessment of examinationAssessment of examination



Bend testBend test If all six test specimens achieve minimum required bend If all six test specimens achieve minimum required bend angle (MBA)angle (MBA)

PASSPASS If one test specimen fails to achieve MBAIf one test specimen fails to achieve MBA

cut out and test two additional test specimenscut out and test two additional test specimens if both specimens achieve MBAif both specimens achieve MBA PASSPASS if one or both fail to achieve MBAif one or both fail to achieve MBA FAILFAIL

If more than one specimen fails to achieve MBAIf more than one specimen fails to achieve MBA FAILFAIL

EN 13067 EN 13067 Assessment of examinationAssessment of examination



EN 13067 EN 13067 Approval periodApproval period Initial ApprovalInitial Approval

two yearstwo years interruption period no longer than 6 monthsinterruption period no longer than 6 months WelderWelders work acceptable (company confirmation)s work acceptable (company confirmation)

ProlongationProlongation further two yearsfurther two years requirements as for initial approvalrequirements as for initial approval plus proof of welding qualityplus proof of welding quality

mechanical test results from independent test housemechanical test results from independent test house Maximum approval period of four yearsMaximum approval period of four years



Examination passedExamination passed

Submission of 12Submission of 12--month confirmation of activitymonth confirmation of activityYear one certificateYear one certificate

Submission of prolongation application form plus Submission of prolongation application form plus proof of weld qualityproof of weld quality

Submission of 36Submission of 36--month confirmation of activitymonth confirmation of activity

ReRe--examinationexamination

Year two certificateYear two certificate

Year three certificateYear three certificate

Year four certificateYear four certificate

EN 13067 EN 13067 Approval periodApproval period



EWF 581EWF 581--0101 European Federation for Welding, European Federation for Welding,

Joining and Cutting guidelineJoining and Cutting guideline Examination entry requirement in EN 13067Examination entry requirement in EN 13067

Completed a technical and practical training course Completed a technical and practical training course in preparation for the examinationin preparation for the examination

For each category defined in EN 13067For each category defined in EN 13067 EWF 581EWF 581--01 defines the minimum theoretical 01 defines the minimum theoretical

education and practical trainingeducation and practical training In terms of content and training hoursIn terms of content and training hours



EWF 581EWF 581--01 01 Education and trainingEducation and training Theoretical educationTheoretical education

hot gas/extrusion weldinghot gas/extrusion welding

88TotalTotal11Basics of extrusion weldingBasics of extrusion welding101011DocumentationDocumentation99

0.50.5Weld imperfectionsWeld imperfections880.50.5Testing welds and jointsTesting welds and joints7711Health and safetyHealth and safety66

0.50.5Welding reworkWelding rework5511Basics of hot gas weldingBasics of hot gas welding44

0.50.5Welded joints and terminologyWelded joints and terminology3311Processing of thermoplasticsProcessing of thermoplastics2211Materials technology of plasticsMaterials technology of plastics11

Minimum Teaching HoursMinimum Teaching HoursThemeThemeElementElement



EWF 581EWF 581--01 01 Education and trainingEducation and training Practical trainingPractical training

hot gas/extrusion weldinghot gas/extrusion welding

55Single VSingle V--butt weldingbutt weldingPVCPVCHot gas speed nozzleHot gas speed nozzleP1.4P1.4

PEPEPPPP

ECTFE or ECTFE or PFA or FEPPFA or FEP

PVDFPVDF

PVCPVCPEPEPPPP

MaterialMaterial

ExtrusionExtrusionExtrusionExtrusionHot gas speed nozzleHot gas speed nozzleHot gas speed nozzleHot gas speed nozzle

Hot gas round nozzleHot gas round nozzleHot gas speed nozzleHot gas speed nozzleHot gas speed nozzleHot gas speed nozzle

ProcessProcess

55Single VSingle V--butt weldingbutt weldingP1.8P1.855Single VSingle V--butt weldingbutt weldingP1.7P1.755Single VSingle V--butt weldingbutt weldingP1.6P1.655Single VSingle V--butt weldingbutt weldingP1.5P1.5

55Single VSingle V--butt weldingbutt weldingP1.3P1.355Double VDouble V--butt weldingbutt weldingP1.2P1.255Double VDouble V--butt weldingbutt weldingP1.1P1.111Material identification, equipment, hand Material identification, equipment, hand tools, weld preparationtools, weld preparationGeneralGeneral

Minimum Minimum Time, HoursTime, HoursContentContent

Training Training UnitUnit



AWS B2.4AWS B2.4 Approved American National StandardApproved American National Standard Specifies qualification of welding Specifies qualification of welding

personnel and procedurespersonnel and procedures Main differences to EN 13067Main differences to EN 13067

Specifies separate qualification forSpecifies separate qualification for vertical, overhead and horizontal welding positionsvertical, overhead and horizontal welding positions different makes/models of welding equipmentdifferent makes/models of welding equipment PVDF copolymersPVDF copolymers ECTFE/ETFE and MFA/FEP/PFAECTFE/ETFE and MFA/FEP/PFA Pipe OD ranges: Pipe OD ranges: 1.251.25, 1.5, 1.5--33, 4, 4--1010, >10, >10



ISO/TR 19480ISO/TR 19480 Main differences to EN 13067Main differences to EN 13067

PE pipe onlyPE pipe only Butt fusion, electrofusion, socket fusionButt fusion, electrofusion, socket fusion

Tear test specified for saddle assembliesTear test specified for saddle assemblies



Current developmentsCurrent developments EN 13067EN 13067

CEN/TC249/WG16CEN/TC249/WG16 UK Principal Expert: Mike Troughton (TWI)UK Principal Expert: Mike Troughton (TWI) Modifications to examination test piece dimensions Modifications to examination test piece dimensions Addition of solvent welding of PVC, Addition of solvent welding of PVC, cPVCcPVC and ABS pipes and welding and ABS pipes and welding of flexible PP lining membranesof flexible PP lining membranes

EWF 581EWF 581--0101 EWF WG EWF WG Plastics WeldingPlastics Welding

UK Principal Expert: Mike Troughton (TWI)UK Principal Expert: Mike Troughton (TWI) Division of document into two separate guidelinesDivision of document into two separate guidelines

PipesPipes Fabrication and lining membraneFabrication and lining membrane

AWS B2.4AWS B2.4 AWS Subcommittee B2FAWS Subcommittee B2F

UK Principal Expert: Mike Troughton (TWI)UK Principal Expert: Mike Troughton (TWI) Addition of solvent welding of PVC, Addition of solvent welding of PVC, cPVCcPVC and ABS pipesand ABS pipes



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