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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.
Raex400Tubecircular
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