Information
Overview
- Summary
- Dongkuk Industries Co., Ltd. is a global steel manufacturer established in 1967, producing various steel products including cold-rolled steel sheets, Q/T heat-treated steel sheets, and nickel-plated steel sheets. The company holds strengths in high-carbon and special alloy steel materials for automotive precision parts, and recently entered the nickel-plated steel sheet market, a key material for EV batteries, securing new growth engines. In addition to its steel business, it is diversifying its operations into renewable energy (wind power towers) and construction. The company continuously strives for quality innovation, customer satisfaction, and technological development to usher in a new era of steel.Dongkuk Industries Co., Ltd. is a global steel manufacturer established in 1967, producing various steel products including cold-rolled steel sheets, Q/T heat-treated steel sheets, and nickel-plated steel sheets. The company holds strengths in high-carbon and special alloy steel materials for automotive precision parts, and recently entered the nickel-plated steel sheet market, a key material for EV batteries, securing new growth engines. In addition to its steel business, it is diversifying its operations into renewable energy (wind power towers) and construction. The company continuously strives for quality innovation, customer satisfaction, and technological development to usher in a new era of steel.
- Key Products/Technologies
- Cold-Rolled Steel Sheets: Steel sheets produced by removing surface scale from hot-rolled steel sheets through a pickling process and then cold-rolling them to achieve the customer's desired thickness, material, surface finish, and shape. These high-carbon and special alloy steel materials are used in precision parts for automobiles, such as engine components, auto-transmission parts, and interior safety parts. The company possesses state-of-the-art cold-rolled special steel facilities, enabling precise control and shape management for optimal product quality.Cold-Rolled Steel Sheets: Steel sheets produced by removing surface scale from hot-rolled steel sheets through a pickling process and then cold-rolling them to achieve the customer's desired thickness, material, surface finish, and shape. These high-carbon and special alloy steel materials are used in precision parts for automobiles, such as engine components, auto-transmission parts, and interior safety parts. The company possesses state-of-the-art cold-rolled special steel facilities, enabling precise control and shape management for optimal product quality.
- Q/T Heat-Treated Steel Sheets: Cold-rolled steel sheets subjected to high-temperature heat treatment and cooling to adjust hardness and tensile strength according to customer requirements. These high-strength materials are used in automotive and industrial applications, including flapper valves, shock absorbers, and cushion plates, offering superior durability and wear resistance. The company operates the first eco-friendly hydrogen quenching heat treatment facility in East Asia, capable of processing high-carbon steel products with thicknesses from 0.1 to 2.5 mm and widths up to 450 mm.Q/T Heat-Treated Steel Sheets: Cold-rolled steel sheets subjected to high-temperature heat treatment and cooling to adjust hardness and tensile strength according to customer requirements. These high-strength materials are used in automotive and industrial applications, including flapper valves, shock absorbers, and cushion plates, offering superior durability and wear resistance. The company operates the first eco-friendly hydrogen quenching heat treatment facility in East Asia, capable of processing high-carbon steel products with thicknesses from 0.1 to 2.5 mm and widths up to 450 mm.
- Nickel-Plated Steel Sheets (DIKEL): Steel sheets with excellent corrosion resistance, oxidation resistance, and workability, primarily used for cylindrical battery cases. The electroplating line applies a 1-6 µm thick nickel layer, followed by diffusion heat treatment to enhance corrosion and oxidation resistance, ensuring high-quality nickel-plated steel sheet production. 'DIKEL' is the company's nickel-plated steel sheet brand, combining 'D' for Dongkuk and Decarbonize, reflecting its commitment to decarbonization. The company has completed a nickel-plated steel sheet plant with an annual capacity of 80,000 tons and plans to expand it to 130,000 tons per year.Nickel-Plated Steel Sheets (DIKEL): Steel sheets with excellent corrosion resistance, oxidation resistance, and workability, primarily used for cylindrical battery cases. The electroplating line applies a 1-6 µm thick nickel layer, followed by diffusion heat treatment to enhance corrosion and oxidation resistance, ensuring high-quality nickel-plated steel sheet production. 'DIKEL' is the company's nickel-plated steel sheet brand, combining 'D' for Dongkuk and Decarbonize, reflecting its commitment to decarbonization. The company has completed a nickel-plated steel sheet plant with an annual capacity of 80,000 tons and plans to expand it to 130,000 tons per year.
- Smart Pickling Plant-Based High-Carbon Cold-Rolled Steel Manufacturing Technology. The company operates state-of-the-art high-carbon steel dedicated narrow, medium, and wide cold rolling mills capable of producing gigapascal-grade steel. It possesses six reversing rolling mills, including a cutting-edge medium-width 6HI mill capable of rolling high-carbon steel up to 10 tons thick, and a z-mill type specialized for thin sheets.Smart Pickling Plant-Based High-Carbon Cold-Rolled Steel Manufacturing Technology. The company operates state-of-the-art high-carbon steel dedicated narrow, medium, and wide cold rolling mills capable of producing gigapascal-grade steel. It possesses six reversing rolling mills, including a cutting-edge medium-width 6HI mill capable of rolling high-carbon steel up to 10 tons thick, and a z-mill type specialized for thin sheets.
- Core Advantages
- Unrivaled Technology and Market Share in High-Carbon and Special Steel: The company is the leading cold-rolled special steel manufacturer in Korea, holding a 70% market share in automotive cold-rolled special steel, with over 50 years of expertise as a world-class specialist in cold-rolled special steel. It meets customer demands for sophistication, diversification, and high functionality in high-carbon and special alloy steel materials for precision automotive parts.Unrivaled Technology and Market Share in High-Carbon and Special Steel: The company is the leading cold-rolled special steel manufacturer in Korea, holding a 70% market share in automotive cold-rolled special steel, with over 50 years of expertise as a world-class specialist in cold-rolled special steel. It meets customer demands for sophistication, diversification, and high functionality in high-carbon and special alloy steel materials for precision automotive parts.
- State-of-the-Art Facilities and Production Flexibility: Possession of multi-functional S6HI wide rolling mills, cutting-edge medium-width 6HI rolling mills capable of rolling 10-ton thick high-carbon steel, z-mill type rolling mills specialized for thin sheets, and a separate skin pass mill, totaling six reversing rolling mills. All annealing furnaces are modern hydrogen furnaces, and the eco-friendly hydrogen quenching heat treatment facility enables the production of high-strength products and compliance with global environmental regulations.State-of-the-Art Facilities and Production Flexibility: Possession of multi-functional S6HI wide rolling mills, cutting-edge medium-width 6HI rolling mills capable of rolling 10-ton thick high-carbon steel, z-mill type rolling mills specialized for thin sheets, and a separate skin pass mill, totaling six reversing rolling mills. All annealing furnaces are modern hydrogen furnaces, and the eco-friendly hydrogen quenching heat treatment facility enables the production of high-strength products and compliance with global environmental regulations.
- Securing Future Growth Engines through Nickel-Plated Steel Sheet Business Expansion: In response to the growth of the EV battery market and increasing demand for cylindrical batteries, the company launched its 'DIKEL' nickel-plated steel sheet, completing a plant with an annual capacity of 80,000 tons and planning to expand it to 130,000 tons. Utilizing its idle cold-rolled steel facilities results in cost savings and increased production capacity, while raw material diversification ensures stable supply.Securing Future Growth Engines through Nickel-Plated Steel Sheet Business Expansion: In response to the growth of the EV battery market and increasing demand for cylindrical batteries, the company launched its 'DIKEL' nickel-plated steel sheet, completing a plant with an annual capacity of 80,000 tons and planning to expand it to 130,000 tons. Utilizing its idle cold-rolled steel facilities results in cost savings and increased production capacity, while raw material diversification ensures stable supply.
- Global Network and Customer-Centric Management: Operation of local sales subsidiaries in the United States, China, and Japan to provide optimal products and services to global customers in a timely manner. Commitment to customer-centric management, aiming to move beyond customer satisfaction to customer delight through continuous quality innovation. Independent operation of technology development to realize the value of partnership with customers.Global Network and Customer-Centric Management: Operation of local sales subsidiaries in the United States, China, and Japan to provide optimal products and services to global customers in a timely manner. Commitment to customer-centric management, aiming to move beyond customer satisfaction to customer delight through continuous quality innovation. Independent operation of technology development to realize the value of partnership with customers.
- Vertical Integration and Raw Material Supply Stability: Expertise in re-rolling, allowing the company to procure semi-finished products by purchasing hot-rolled coils and re-rolling them in-house. The advantage of flexible production expansion and in-house production based on raw material purchasing conditions. Strict raw material selection criteria, sourcing 100% high-purity 99.9% grade 1 nickel from Europe (Norway, Finland).Vertical Integration and Raw Material Supply Stability: Expertise in re-rolling, allowing the company to procure semi-finished products by purchasing hot-rolled coils and re-rolling them in-house. The advantage of flexible production expansion and in-house production based on raw material purchasing conditions. Strict raw material selection criteria, sourcing 100% high-purity 99.9% grade 1 nickel from Europe (Norway, Finland).
- Target Industrie
- Automotive Industry: Cold-rolled steel sheets are used in precision parts such as automotive engine components, auto-transmission parts, and interior safety parts. Q/T heat-treated steel sheets are applied to high-strength and wear-resistant automotive components like flapper valves, shock absorbers, and cushion plates.Automotive Industry: Cold-rolled steel sheets are used in precision parts such as automotive engine components, auto-transmission parts, and interior safety parts. Q/T heat-treated steel sheets are applied to high-strength and wear-resistant automotive components like flapper valves, shock absorbers, and cushion plates.
- Secondary Battery Industry: Nickel-plated steel sheets are a core material for cylindrical battery cases, used in electric vehicles, personal mobility devices like electric bicycles and kickboards, ESS (Energy Storage Systems), and power tools.Secondary Battery Industry: Nickel-plated steel sheets are a core material for cylindrical battery cases, used in electric vehicles, personal mobility devices like electric bicycles and kickboards, ESS (Energy Storage Systems), and power tools.
- Home Appliance and Construction Industries: Color-printed steel sheets are utilized as materials for construction and home appliances.Home Appliance and Construction Industries: Color-printed steel sheets are utilized as materials for construction and home appliances.
- Industrial Equipment and Medical Devices: Q/T heat-treated steel sheets are important materials in various industrial fields and can also be used for food and medical equipment.Industrial Equipment and Medical Devices: Q/T heat-treated steel sheets are important materials in various industrial fields and can also be used for food and medical equipment.
- Major Markets
- China, JapanChina, Japan
- Norway, FinlandNorway, Finland
- United StatesUnited States
- Certifications/Patents
- Establishment of an environmentally friendly production system through the introduction of eco-friendly hydrogen quenching heat treatment facilities. Proactive response to global environmental regulations such as Pb-free. Environmental management policy focused on minimizing environmental impact and preventing pollution in the planning, development, procurement, verification, and service activities of cold-rolled products.Establishment of an environmentally friendly production system through the introduction of eco-friendly hydrogen quenching heat treatment facilities. Proactive response to global environmental regulations such as Pb-free. Environmental management policy focused on minimizing environmental impact and preventing pollution in the planning, development, procurement, verification, and service activities of cold-rolled products.
- Currently under investigation by the Special Judicial Police of the Korean Intellectual Property Office for alleged trade secret infringement related to nickel-plated steel sheets.Currently under investigation by the Special Judicial Police of the Korean Intellectual Property Office for alleged trade secret infringement related to nickel-plated steel sheets.
Introduction
Location
46 Dadong-gil, Jung District, Seoul, South Korea
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