Dongkuk Steel Mill is a leading South Korean steel manufacturer primarily engaged in the production of hot-rolled products such as steelmaking, plates, sections, and steel bars. The company plays a pioneering role in eco-friendly steel production through its Eco-Arc electric arc furnace technology, maximizing energy efficiency and reducing greenhouse gas emissions. It possesses advanced technological capabilities, focusing on the development of high-value-added products including high-strength, seismic-resistant, and ultra-high-strength steel bars, as well as specialized plates and extra-large sections. Dongkuk Steel Mill is a company that leads the development of the domestic steel industry through continuous technological innovation and eco-friendly management.DongkukSteelMillisaleadingSouthKoreansteelmanufacturerprimarilyengagedintheproductionofhot-rolledproductssuchassteelmaking,plates,sections,andsteelbars.Thecompanyplaysapioneeringroleineco-friendlysteelproductionthroughitsEco-Arcelectricarcfurnacetechnology,maximizingenergyefficiencyandreducinggreenhousegasemissions.Itpossessesadvancedtechnologicalcapabilities,focusingonthedevelopmentofhigh-value-addedproductsincludinghigh-strength,seismic-resistant,andultra-high-strengthsteelbars,aswellasspecializedplatesandextra-largesections.DongkukSteelMillisacompanythatleadsthedevelopmentofthedomesticsteelindustrythroughcontinuoustechnologicalinnovationandeco-friendlymanagement.
Key Products/TechnologiesKeyProducts/Technologies
**Steelmaking**: Introduction of Korea's first eco-friendly Eco-Arc electric arc furnace technology, achieving a 30% reduction in energy consumption and greenhouse gas emissions. Maximization of energy efficiency and expansion of raw material selection through continuous scrap charging and preheating methods. Active development of Hyper EAF technology for low-carbon steel production, effectively shortening power-on time and reducing electricity and LNG consumption. Adoption of the Hot Charge production method, which enhances energy efficiency through flexible reheating furnace operation.**Steelmaking**:IntroductionofKorea'sfirsteco-friendlyEco-Arcelectricarcfurnacetechnology,achievinga30%reductioninenergyconsumptionandgreenhousegasemissions.Maximizationofenergyefficiencyandexpansionofrawmaterialselectionthroughcontinuousscrapchargingandpreheatingmethods.ActivedevelopmentofHyperEAFtechnologyforlow-carbonsteelproduction,effectivelyshorteningpower-ontimeandreducingelectricityandLNGconsumption.AdoptionoftheHotChargeproductionmethod,whichenhancesenergyefficiencythroughflexiblereheatingfurnaceoperation.
**Steel Bars/Rebars**: Thin and long steel materials for concrete reinforcement, with excellent concrete adhesion due to surface protrusions and ribs. Production of various steel grades including general-purpose (SD300, SD350), welding (SD400W, SD500W), high-strength (SD400), nuclear, seismic-resistant (SD400S, SD500S), LNG, and ultra-high-strength (SD500, SD600, SD700) steel bars. Strengthening of high-strength product lines through the acquisition of Korea's first KS certification for seismic-resistant steel bars and the successful development of 1GPa-class Giga Rebars. The premium coiled rebar brand D-KOIL offers coils up to 6.2km long, contributing to easy loading and processing, and reduced waste. Entry into new businesses with the glass fiber reinforced plastic rebar (GFRP) brand 'DK Green Bar'.**SteelBars/Rebars**:Thinandlongsteelmaterialsforconcretereinforcement,withexcellentconcreteadhesionduetosurfaceprotrusionsandribs.Productionofvarioussteelgradesincludinggeneral-purpose(SD300,SD350),welding(SD400W,SD500W),high-strength(SD400),nuclear,seismic-resistant(SD400S,SD500S),LNG,andultra-high-strength(SD500,SD600,SD700)steelbars.Strengtheningofhigh-strengthproductlinesthroughtheacquisitionofKorea'sfirstKScertificationforseismic-resistantsteelbarsandthesuccessfuldevelopmentof1GPa-classGigaRebars.ThepremiumcoiledrebarbrandD-KOILofferscoilsupto6.2kmlong,contributingtoeasyloadingandprocessing,andreducedwaste.Entryintonewbusinesseswiththeglassfiberreinforcedplasticrebar(GFRP)brand'DKGreenBar'.
**Sections/Structural Steel**: Production of various cross-sectional structural steel materials including H-beams, angle bars, channel bars, flat bars, profiles, round bars, sheet piles, DK-Deck, and D-Mega Beam. H-beams feature wide and thick flanges and thin webs, offering superior cross-sectional performance and ease of assembly and joining. The large welded section brand 'D-Mega Beam' is a customized product capable of producing H-beams from a minimum size of 150mm x 300mm to a maximum of 3000mm x 1250mm.**Sections/StructuralSteel**:Productionofvariouscross-sectionalstructuralsteelmaterialsincludingH-beams,anglebars,channelbars,flatbars,profiles,roundbars,sheetpiles,DK-Deck,andD-MegaBeam.H-beamsfeaturewideandthickflangesandthinwebs,offeringsuperiorcross-sectionalperformanceandeaseofassemblyandjoining.Thelargeweldedsectionbrand'D-MegaBeam'isacustomizedproductcapableofproducingH-beamsfromaminimumsizeof150mmx300mmtoamaximumof3000mmx1250mm.
**Steel Plates**: Generally thick steel plates with a thickness of 6mm or more, categorized for shipbuilding, offshore plants, structural use, pressure vessels, and pipes. DK-LP Plate is a product developed with top-tier rolling technology, enabling the fabrication of structures without welding between plates of different thicknesses, and also supports the DT (Differential Thickness) type method. DKLAD (clad plate) is a technology that joins two or more different metals, applying a thin layer of corrosion-resistant alloy to a carbon steel base material, commercialized for the first time in Korea, expanding its product range to 80T·3000mm class products. Expansion of the product portfolio through the initial supply of 4.5T ultra-thin plates, responding to market demands. Securing global market competitiveness through the acquisition of ship class approvals from 10 classification societies worldwide.**SteelPlates**:Generallythicksteelplateswithathicknessof6mmormore,categorizedforshipbuilding,offshoreplants,structuraluse,pressurevessels,andpipes.DK-LPPlateisaproductdevelopedwithtop-tierrollingtechnology,enablingthefabricationofstructureswithoutweldingbetweenplatesofdifferentthicknesses,andalsosupportstheDT(DifferentialThickness)typemethod.DKLAD(cladplate)isatechnologythatjoinstwoormoredifferentmetals,applyingathinlayerofcorrosion-resistantalloytoacarbonsteelbasematerial,commercializedforthefirsttimeinKorea,expandingitsproductrangeto80T·3000mmclassproducts.Expansionoftheproductportfoliothroughtheinitialsupplyof4.5Tultra-thinplates,respondingtomarketdemands.Securingglobalmarketcompetitivenessthroughtheacquisitionofshipclassapprovalsfrom10classificationsocietiesworldwide.
Core AdvantagesCoreAdvantages
**Leadership in Eco-friendly Steelmaking Technology**: Introduction of Korea's first Eco-Arc electric arc furnace, resulting in a 30% reduction in energy consumption and greenhouse gas emissions, and possession of continuous scrap charging and preheating technology. Efforts to innovate low-carbon steel production technology through the development of Hyper EAF.**LeadershipinEco-friendlySteelmakingTechnology**:IntroductionofKorea'sfirstEco-Arcelectricarcfurnace,resultingina30%reductioninenergyconsumptionandgreenhousegasemissions,andpossessionofcontinuousscrapchargingandpreheatingtechnology.Effortstoinnovatelow-carbonsteelproductiontechnologythroughthedevelopmentofHyperEAF.
**Expansion of High-Value-Added Product Portfolio**: Acquisition of Korea's first KS certification for seismic-resistant steel bars, the premium coiled rebar brand D-KOIL, and the development of 1GPa-class Giga Rebars. Development and commercialization of differentiated plate products based on top-tier rolling technology, such as DK-LP Plate and DKLAD (clad plate). Entry into the large welded section business with D-Mega Beam.**ExpansionofHigh-Value-AddedProductPortfolio**:AcquisitionofKorea'sfirstKScertificationforseismic-resistantsteelbars,thepremiumcoiledrebarbrandD-KOIL,andthedevelopmentof1GPa-classGigaRebars.Developmentandcommercializationofdifferentiatedplateproductsbasedontop-tierrollingtechnology,suchasDK-LPPlateandDKLAD(cladplate).EntryintothelargeweldedsectionbusinesswithD-MegaBeam.
**Long History and Technical Expertise**: As Korea's first private steel company established in 1954, it boasts over half a century of steel production history and accumulated technology. Holds various 'firsts' in Korea, including wire rod, electric arc furnace steelmaking, plates, and color-coated steel. Its electric arc furnace operation know-how is a benchmark for overseas companies, including Japan's Steel Plantech.**LongHistoryandTechnicalExpertise**:AsKorea'sfirstprivatesteelcompanyestablishedin1954,itboastsoverhalfacenturyofsteelproductionhistoryandaccumulatedtechnology.Holdsvarious'firsts'inKorea,includingwirerod,electricarcfurnacesteelmaking,plates,andcolor-coatedsteel.Itselectricarcfurnaceoperationknow-howisabenchmarkforoverseascompanies,includingJapan'sSteelPlantech.
**Eco-friendly Management and Certifications**: Strengthening ESG management under the 'Steel for Green' vision. Acquisition of European, US, and domestic Environmental Product Declaration (EPD) certifications, and Korea's first 'Low-Carbon Product Certification' from the Ministry of Environment for all its product categories.**Eco-friendlyManagementandCertifications**:StrengtheningESGmanagementunderthe'SteelforGreen'vision.AcquisitionofEuropean,US,anddomesticEnvironmentalProductDeclaration(EPD)certifications,andKorea'sfirst'Low-CarbonProductCertification'fromtheMinistryofEnvironmentforallitsproductcategories.
**Production Efficiency and Cost Competitiveness**: The Eco-Arc electric arc furnace's scrap preheating and continuous charging method leads to a 30% reduction in electricity consumption and broader raw material selection. Introduction of the Hot Charge production method enhances energy efficiency. D-KOIL contributes to cost reduction in construction sites through ease of loading and processing, and reduced waste.**ProductionEfficiencyandCostCompetitiveness**:TheEco-Arcelectricarcfurnace'sscrappreheatingandcontinuouschargingmethodleadstoa30%reductioninelectricityconsumptionandbroaderrawmaterialselection.IntroductionoftheHotChargeproductionmethodenhancesenergyefficiency.D-KOILcontributestocostreductioninconstructionsitesthrougheaseofloadingandprocessing,andreducedwaste.
**Customized Production and Fast Delivery**: D-Mega Beam offers customized solutions without size restrictions and a stable, rapid delivery response system. Establishment of a short-delivery system for ultra-thin plates and DKLAD products.**CustomizedProductionandFastDelivery**:D-MegaBeamofferscustomizedsolutionswithoutsizerestrictionsandastable,rapiddeliveryresponsesystem.Establishmentofashort-deliverysystemforultra-thinplatesandDKLADproducts.
Target IndustrieTargetIndustrie
**Construction and Civil Engineering**: Steel bars (rebars) are widely used for concrete reinforcement in civil engineering and building structures. Seismic-resistant steel bars are applied in structures requiring earthquake resistance. H-beams are used in mixed-use buildings, high-rise buildings, factories, civil engineering, and bridges. Steel plates are used in bridges, construction, and steel frame structures, with increasing demand especially in large-scale and super high-rise buildings.**ConstructionandCivilEngineering**:Steelbars(rebars)arewidelyusedforconcretereinforcementincivilengineeringandbuildingstructures.Seismic-resistantsteelbarsareappliedinstructuresrequiringearthquakeresistance.H-beamsareusedinmixed-usebuildings,high-risebuildings,factories,civilengineering,andbridges.Steelplatesareusedinbridges,construction,andsteelframestructures,withincreasingdemandespeciallyinlarge-scaleandsuperhigh-risebuildings.
**Shipbuilding and Marine**: Steel plates are most commonly used in shipbuilding, applied in special vessels such as tankers, bulk carriers, containers, LPG/LNG carriers, and marine structures. Offshore plant steel plates are used for pipes and plates in vessels and offshore structures related to oil and gas exploration, development, drilling, production, storage, and transportation.**ShipbuildingandMarine**:Steelplatesaremostcommonlyusedinshipbuilding,appliedinspecialvesselssuchastankers,bulkcarriers,containers,LPG/LNGcarriers,andmarinestructures.Offshoreplantsteelplatesareusedforpipesandplatesinvesselsandoffshorestructuresrelatedtooilandgasexploration,development,drilling,production,storage,andtransportation.
**Energy Industry**: LNG steel bars are used in low-temperature concrete structures for LNG storage tanks. Application of pipe-grade steel plates due to increasing demand for oil and gas pipelines. Utilization of DK-LP Plate in wind turbines.**EnergyIndustry**:LNGsteelbarsareusedinlow-temperatureconcretestructuresforLNGstoragetanks.Applicationofpipe-gradesteelplatesduetoincreasingdemandforoilandgaspipelines.UtilizationofDK-LPPlateinwindturbines.
**Machinery and Industrial Equipment**: Steel plates are used in various industrial machinery, boilers and pressure vessels, mechanical structures, molds for automobile and home appliance manufacturing, and machine parts.**MachineryandIndustrialEquipment**:Steelplatesareusedinvariousindustrialmachinery,boilersandpressurevessels,mechanicalstructures,moldsforautomobileandhomeappliancemanufacturing,andmachineparts.
Major MarketsMajorMarkets
South Korea, Southeast Asia (estimated)SouthKorea,SoutheastAsia(estimated)
Europe (based on EPD certification)Europe(basedonEPDcertification)
United States (based on UL EPD certification)UnitedStates(basedonULEPDcertification)
BrazilBrazil
Certifications/PatentsCertifications/Patents
**Certifications**: Quality System (KEPIC) certification (Incheon Plant, Pohang Bar Plant, Pohang Plant). ISO 14001:2015 (Environmental Management System) company-wide certification. ISO 50001:2018 (Energy Management System) company-wide certification. H-beam (S-P-11678) certification (Pohang Plant). Non-heat-treated plate (S-P-11673) certification (Dangjin Plant). Heat-treated plate (S-P-11676) certification (Dangjin Plant). Environmental Product Declaration (EPD-IES-0021416) for straight and coiled rebars (Incheon Plant). European International EPD certification. US UL EPD certification. Domestic Environmental Product Declaration (EPD) certification. Ministry of Environment 'Low-Carbon Product Certification' (first in the domestic steel industry for all product categories). KS certification for seismic-resistant steel bars (first in Korea). Manufacturing process approval from 10 ship classification societies for plate products (KR, NK, ABS, GL, LR, DNV, RINA, BV, CCS, RS, etc.).**Certifications**:QualitySystem(KEPIC)certification(IncheonPlant,PohangBarPlant,PohangPlant).ISO14001:2015(EnvironmentalManagementSystem)company-widecertification.ISO50001:2018(EnergyManagementSystem)company-widecertification.H-beam(S-P-11678)certification(PohangPlant).Non-heat-treatedplate(S-P-11673)certification(DangjinPlant).Heat-treatedplate(S-P-11676)certification(DangjinPlant).EnvironmentalProductDeclaration(EPD-IES-0021416)forstraightandcoiledrebars(IncheonPlant).EuropeanInternationalEPDcertification.USULEPDcertification.DomesticEnvironmentalProductDeclaration(EPD)certification.MinistryofEnvironment'Low-CarbonProductCertification'(firstinthedomesticsteelindustryforallproductcategories).KScertificationforseismic-resistantsteelbars(firstinKorea).Manufacturingprocessapprovalfrom10shipclassificationsocietiesforplateproducts(KR,NK,ABS,GL,LR,DNV,RINA,BV,CCS,RS,etc.).
**Patents**: Patent registration for 'High-functional Laminate Color Steel Sheet and its Manufacturing Method' (2016, former Dongkuk Steel). Patent registration related to 'Three-dimensional Pattern Laminate Steel Sheet' (2016, former Dongkuk Steel).**Patents**:Patentregistrationfor'High-functionalLaminateColorSteelSheetanditsManufacturingMethod'(2016,formerDongkukSteel).Patentregistrationrelatedto'Three-dimensionalPatternLaminateSteelSheet'(2016,formerDongkukSteel).
Introduction
Location
19 Eulji-ro 5-gil, Jung District, Seoul, South Korea
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Information
19 Eulji-ro 5-gil, Jung District, Seoul, South Korea