Introduction Of JFE Steel Corporation

Introduction of JFE Steel CorporationThroughout its history of more than 90 years,we at JFE Steel have done our utmost to meetcustomers’ requirements. We are continuouslyimproving our production equipment,expanding our product types and intensifyingour quality control.We at JFE Steel have established five of theworld’ s most advanced plants in Japan tomanufacture various products, meeting demandat home and abroad.We always maintain the world’ s highest facilityand technology level, and as such are highlytrusted by our customers.We hope that you will continue to choose JFEsteels as your preferred products.East Japan Works: Chiba areaEast Japan Works: Keihin areaChita WorksWest Japan Works: Kurashiki areaWest Japan Works: Fukuyama area01Introduction of JFE Steel Corporation

Steel sheet pilesSteel sheet piles are widely used in riverbulkheads, harbor quaywalls, earth retainingwalls, and cut-off walls. In addition toU-shaped or one-piece molded corner steelsheet piles, we also manufactureheavy-duty-coated steel sheet piles for amarine environment.Steel pipe pilesSteel pipe piles employing circular steel pipesand tubes play a valuable role as basicmaterials for civil engineering andconstruction due to their high strength anduniform quality. We also provide ingeniousoriginal piles.Steel pipe sheet pilesSteel pipe sheet piles, in which steel pipe pilesare provided with joints, are employed toconstruct high-rigidity walls. Steel pipe sheetpiles are widely used in revetments,breakwaters, and excavation earth retainingwalls.H-shapesIn addition to a wide selection of geometries,H-shapes, which are widely used in structuresfrom housing to high-rise buildings, long spanstructures and Steel Road Deck, featureexcellent reliability and cost effectiveness.Circular/square steel pipes and tubesIn addition to our standard steel tubes andpipes, we also have tubes and pipes thatensure toughness values, low yield ratio, andyield point range and feature excellentaseismicity and weldability.PlatesWe have worked hard to develop constructionmaterials in response to social needs such aschanges in the construction environment,advanced aseismicity requirements,construction cost reductions, andconsideration to the environment, thusoffering a wide variety of products.Introduction of JFE Steel Corporation02

STEEL SHEET PILES1 Wide varietyIn addition to JIS-compliant U-shaped steel sheet piles, we have corner steel sheetpiles and heavy-duty-coated steel sheet piles for use in a marine environment(marine coat steel sheet piles) in a wide variety of types and sizes.2 Excellent work efficiencyThe joints of steel sheet piles have a sufficient margin of flexibility when combinedtogether to ensure excellent interchangeability and 0Revetment・Quay wallRetaining walls (permanent)BreakwaterEarthretainingScour preventionReinforcement of dikesCountermeasures againstliquefactionTemporarystructures0303Steel Sheet P i l e s210LengthMax：19mMin：2m400Retaining walls (temporary)Cutoff wall / ClosureHeavy-duty-coated steelpipe sheet piles with aurethane elastomercoating that behaveextremely well undercorrosive conditions suchas marine avy-duty-coated steel sheet Min：2m50013.0Marine coat steel sheet pocket pileNew steel vertical cut-offwalls for use in finaldisposal sites of controlledwaste, featuring a pocket(having a diameter in theorder of 10 mm) formedby rolling at the bottomface of the claw.

Construction methodPress-fit methodVibro methodSteel sheet pilePress fittingPower unitmachinePile hangingcraneCrawlercraneTrenchingJ-pocket pileJ-pocket piles (JPP) are new steel vertical cut-off walls designed for use in final disposal sitesof controlled waste. The piles feature a pocket (having a diameter in the order of 10 mm)formed by rolling at the bottom face of the claw of conventional steel sheet piles. This allowsimpermeable materials to be installed, filler materials to be injected and monitoring pipes tobe set.Steel sheetpileSealing rubber(filler)Sealing rubber methodSealing rubberFilling methodFillerSealing rubberSteel Sheet P i l e s04

STEEL SHEET PILESRevetment worksSelf-sustaining typeThe retaining method usingsteel sheet piles comes in twotypes — a self-sustaining typeand a tie rod type.The tie rod type can withstanda larger horizontal force.Tie rod typeTie rodWalls for road constructionUsed when the surrounding ground is lower than the roadsurface. By placing concrete and finishing the surfaceafter setting steel sheet piles, it is possible to quicklyconstruct walls with an excellent landscape.Embankment and reinforcing workUsing steel sheet piles as a countermeasure to thesettling of an embankment due to its own weight canprovide effective reinforcement.0503Steel Sheet P i l e s

River improvement worksUsed in river widening works in river improvement works.It is possible to construct hypothetical cut-off walls withsteel sheet piles and remove them after the works arecompleted.The steel sheet piles can be reused after disposal.Cut-off wallThe cut-off walls using steel sheet piles have anembedded structure. As such, they are highly adaptableto flimsy ground and allow for the construction ofcut-off walls from an economical standpoint.Earth retaining worksExtensive product lineup allows for a wide range of applications depending on thedigging depth and ground conditions.Steel Sheet P i l e s06

STEEL PIPE PILES1 Large bearing capacityCapable of withstanding a large striking force and reaching a solid bearing stratum,thus yielding a large bearing capacity.2 Large bending strengthHigh horizontal resistance can be expected due to large section rigidity and bendingstrength.High ductility and deformation performance can properly ensure the safety of astructure during an earthquake.ProductSteel pipe pilesTsubasa pilePile driving methodvibration construction methodGood trackrecord inconstruction.KING construction method pileSuper KING construction method pileMarine coat steel pipe pilesNF pile/SL pile(Heavy-duty-coatedsteel pipe piles)(Measures againstnegative friction)Rotation penetrationpile methodInner excavation pileconstruction methodSteel pipe pile enlargedhead foot protection methodPile driving methodvibration construction methodPile driving methodvibration construction methodLarge bearingcapacity yieldedby end wing(1.5–2.0 times thepile diameter).Low vibration andlow noise.Large bearingcapacity yieldedby enlarged footprotection bulb(1.5 times the pilediameter)Heavy-duty-coatedsteel pipe pileswith covering ofpolyethylene orurethaneelastomerSteel pipe pilescoated with specialasphalt on theirsurface.Less displacedsoil atconstruction.No soil is wasted.Functionsextremely wellunder corrosiveconditions such asmarineenvironmentsApplication ofenlarged pilehead type ispossible.Largely decreasingnegative frictionassociated withgroundsubsidence.Construction methodSteel pipe pile driving methodSteel pipepileBase machine0703Steel Pipe P i l e sCrawler craneBase machineSupporting layerSupporting layer1 Driving of lower pile2 Checking pile corefor verticality.Steel pipe pile vibration construction method3 Driving penetration4 Penetration intosupporting layer1 Driving of lower pile2 Checking pile corefor verticality.3 Vibration penetration4 Penetration intosupporting layer

Construction methodTsubasa pile construction methodThree-point pile driverAll-round rotating machine(steel tubes and pipes having a diameter of 318.5–600 mm)(steel tubes and pipes having a diameter of 500–1200 mm)AugermotorCapBasemachineTsubasa pileAll-roundrotatingmachineWeightBase machinePincersBracingSupporting layer1 Driving of lower pile2 Checking pile corefor verticality.Crawler cranePincersSupporting layer3 Rotationpenetration4 Penetration intosupporting layer1 Driving of lower pile2 Checking pile corefor verticality.3 Rotationpenetration4 PenetrationintosupportinglayerKing construction methodSpiralaugerKING bitSupporting layer1 Insertion of spiral auger attachedwith KING bit into pile2 Connection of3 Drilling downspiral auger toof pile to arunning gearpredeterminedand constructiondepth whileof lower piledigging andremoving soilSuper King construction method4 Changing to5 Excavation andwaterrepetitiveexcavation.agitation mixingPrior excavationwhile spreadingthe head andinjecting cementmilk6 Pulling up spiralauger whilepouring waterafter press fittingpile end to bulbSupporting layer1 Driving lowerpile andsetting pile core2 Excavation andagitation.Drilling downlower pile.3 Driving upperpile. Jointconstruction4 Excavation andagitation.Drilling downupper pile5 Wind spreading6 Construction ofenlarged footprotection bulb7 Anchoring ofpileSteel Pipe P i l e s08

STEEL PIPE PILESSteelÊ tubesÊ andÊ pipesÊ manufacturingÊ methodSpiralÊ steelÊ tubesÊ andÊ pipesRecoilFormingInner face weldingOuter face weldingUltrasonic wavepenetrant inspectionon welding portionRunning ntMedium-diameterÊ seamÊ weldedÊ steelÊ tubesÊ andÊ pipesRecoilFormingHigh frequency resistance weldingFixed diameterCuttingUltrasonic wavepenetrant inspectionon welding portionWater coolingAppearancedimensionalinspectionIndication and coatingShipmentUOEÊ steelÊ tubesÊ andÊ pipesPlateIntermediateinspectionU pressO pressMechanical extensionInner face weldingOuter face ipmentLargeÊ diameterÊ bendingÊ steelÊ tubesÊ andÊ pipesPlateStamping: Edge bendingComplete round correcting pressX-raytransmissioninspectionStamping: Total bendingInner face weldingUltrasonic wavepenetrant inspectionon welding portionIndication and coating0903Steel Pipe P i l e sShipmentOuter face welding

Manufacturable range of steel tubes and pipesNominal Outer diameter(mm)300400500600700Thickness 0.02,5002400.01450.02550.02600.03,000Spiral steel tubes and pipes※Medium-diameter seamwelded steel tubes and pipesUOE steel tubes and pipesLarge diameter bendingsteel tubes and pipesContact us in advance for the range of the dotted-line area.Steel Pipe P i l e s10

STEEL PIPE SHEET PILES1 Large rigidity and bearing capacityBehaving as an integral foundation and thus yielding larger rigidity and bearingcapacity compared with a pile foundation.2 Doubling as temporary cofferdamDoubling as temporarycofferdam with the advantagesshown on the right（1）Possible to shorten construction period and reduceconstruction cost.（2）Improved safety during construction.（3）Neighboring construction is possible due to smallspace occupiedProductL-T typeP-P typeP-T typeSteel pipe outer diameterMax：1.7m Min：0.5mSteel pipe outer diameterMax：1.7m Min：0.5mSteel pipe outer diameterMax：1.7m Min：0.5mJointJointJointtt5φD 30 530247.8Heavy-duty-coated steel pipesheet piles with a urethaneelastomer coating thatbehave extremely well undercorrosive conditions such asmarine environments.CT-76 85 9 9φD 9855.2φ16φ165.2 912a b aD2ℓ 76 2 -802 - D2L-75 75 9typea：75 b：30D2ℓ 85.5 2 -902 - D2L-100 75 10typeT-125 9ℓa：75 b：35or30※D2ℓ 110 2 -902 - D2* Determined with welding specification(heavy-duty-coated steel sheet pile)30φD9(11)t 9 30L-65 65 8 typea：65 b：30Marine coat steel pipe sheet pile76180ApplicationSteel pipe sheet piles, in which steel pipe piles are provided with joints, are employed toconstruct high-rigidity walls.Widely used in harbor facilities (quaywalls, revetments, breakwaters), urban civil engineering(earthretaining and cofferdams) and bridges (steel pipe sheet pile foundations). Large rigidityand excellent work efficiency allow for rational designing.Harbor facilities (quaywalls, revetments, breakwaters)1103Steel pipe Sheet P i l e sBridges (steel pipe sheet pile foundations)