Raex400TubecircularRaex400Tubeissimplythehardestcoldformedsteeltubeintheworld.Infact,itisnearlythreetimesashardasregularS355.Itsmartensitic,homogenousmicrostructurethroughoutthetubewallguaranteesalonglifetimeinabrasivematerialspumpingapplications.

Raex400Tubeisdesignedforthecostefficienttransportofwetconcreteandothersemifluidliquidsandwearmaterials.Itcan significantly improve the performance of the pumping or dredging equipment and extend its service life beyond thenormalstandards.

TypicalapplicationsforRaex400Tube:

Pumpingsystemsforwetconcrete

Transportationandhandlingofsemifluids

Transportationandhandlingofsandandotherabrasivematerials

Dredgingequipment

Wearingpartsofminingmachinery,forexamplerollersforconveyers

Wearingpartsforhandlingmachineryfortimberandtimbermaterials

Theinformationonourwebsiteisaccuratetothebestofourknowledgeandunderstanding.Althougheveryefforthasbeenmadetoensureaccuracy,thecompanycannotacceptanyresponsibilityforanydirectorindirectdamagesresultingfrompossibleerrorsorincorrect

applicationoftheinformationofthispublication.Wereservetherighttomakechanges.

Copyright2014RautaruukkiCorporation.Allrightsreserved.

Documentprintedon10.04.2014 www.ruukki.com

Dimensions

Raex400steel tubesaremanufacturedby roll formingandHFwelding.Thematerial ishotrolled, hardenedsteel strip,whichhasbeendevelopedtoresistabrasivewearandhighsurfacepressure.

OutsideDimensionDmm

WallThicknessTmm/Weightkg/m(*NominalsizeDNinmm)

3 4 5 6

76.1 5.41

88.9 6.36 8.38(80)

101,6 9.63

108 103.3(100)

114.3 10.9

127 12.1

133 12.7(125)

139 13.4 16.6 19.8(125)

152.4 11.1

159 15.3(150) 19.0 22.6

168.3 20.1 24

193.7 23.3 27.8

219.1 31.5(200)

availableinstock

*)Nominalsize(DN)isindirectlyrelatedtothephysicalsize(mm)oftheboreoroutsidediameteroftheendconnections(flanges,elbowsetc.)

Byagreement,wealsomanufacturecustomerspecificdimensions.

Tolerances

TolerancesondimensionsandshapesbasedontheEN102192standard.

Property Circularstructuralsteeltube1)

Outsidediameter(D) 1.25%

Outofroundness 0.025

Wallthickness(T) 10%

Straightness 0.20%ofmeasuredlength

1)Allexternaldimensionsincludingoutofroundnessaremeasuredatadistancefromtheendof thesteel tubeofnot lessthanDforcircularsections.Thedistancemustbeaminimumof100mm.

Beadscarfingofinnerburrscanbecarriedoutwhenagreeduponseparately.

Properties

Raex400steeltubeisadurablehighstrengthstructuralmaterial.Theaveragehardnessisalmostthreetimesashighasthat of S355 tubular steel. High hardness and tensile strength give the pipe high resistance to abrasion in abrasive

Raex400Tubecircular

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environmentsandunderhighsurfacepressure.Theresistanceagainstabrasivewearconsiderablydecreasesthewearofmaterialsurfacesandstructures.

Despiteitshighhardnessandstrength,thesteeltubeiseasytoprocessandweld.

AHFweldedjointisnarrow,whichisfavourablefortheuniformqualityofthesteeltube.ThankstoaccuratelylocalisedheatinputduringHFwelding,thesofteningoftheweldtypicallyoccurringinhardenedsteelislimitedtoanarrowzone.

Mechanicalproperties

YieldstrengthRp0.2MPa

TensilestrengthRmMPa

HardnessHBW

11001300 12501400 3604401)

1)TheBrinellvaluescorrespondapproximatelytoaVickershardnessof380460HV10andRockwellhardnessof3946HRC.

Chemicalcomposition

Carbon,C Silicon,Si Manganese,Mn Phosphorus,P Sulphur,S

0.25 0.8 1.7 0.025 0.015

Aluminium(Al)and/or titanium(Ti)and/orboron(B)areused forbindingnitrogen(N)andcontrollinggrainsize. INaddition,chromium(Cr),nickel (Ni)andmolybdenum(Mo)canbeusedasalloys.

Carbonequivalentvalue

Thetypicalcarbonequivalentvalue(CEV)is0.50.CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Processinginstructions

Welding

RaexsteeltubehasthesameweldinginstructionsasRaex400steelgrade.TheweldabilityofRaex400Tubeisgoodanditcanbeweldedusingallcommonweldingtechniques.Howeverbuttweldsarenotrecommendedtouseinjoiningtubestogether due to risk of losing some of the hardness in the HAZ. It is recommended to weld with as low heat input aspossible,witheithermatchingorundermatchingconsumables,dependingontheapplicationandlocationoftheweld.

Prefabricationservices

Ruukkioffersversatileprefabricationservicesfore.ghighstrengthRaexTubes,includingsawing,lasercuttinganddifferentsurfacetreatments.Byutilizingtheseservicestheneedsforowninvestmentsisreducedandcustomerscanfocusontheirowncorecompetences.

ReadmoreaboutRuukkisprefabricationservices

Order&delivery

Deliverycondition

Rollformedandhighfrequencywelded(HF)steeltubearemadeofhardenedhotstrip.

Inspectiondocument

SteeltubesaresuppliedwithanEN102043.1inspectiondocument.

Identification

Raex400steeltubesareprovidedwithacontinuousinkjetmarkinggivingtheRuukkiemblem,Raexproduct,dimensionsandidentificationnumber.Thedatacanbeusedtotracemanufacturingandmaterialdataofreadymadesteeltubes.

GeneraldeliveryinformationcanbefoundfromdocumentGeneraltermsofsale.

Thecontentofthisdocumenthasbeencreatedfromwebpagelastupdated21Oct2013Oursalesandtechnicalsupportarehappytogiveyoumoreinformation.Visitwww.ruukki.com/contactus.

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