Japan Steel Works, Ltd.
Basic Information
- Stock Code
- 5631
- Industry
- Machinery
- Category Detail
- Manufacturing Machinery & Electrical Equipment
- Prefecture
- Tokyo
- Establishment Year
- December 1950
- Listing Year
- June 1951
- Official Website
- https://www.jsw.co.jp/
- TSE Information
- TSE Information
- Yahoo! Finance
- Yahoo! Finance
- Other Companies
- Fujikura, Shibaura Machine, TOYO Innovex, Nissei ASB Machine, Kawata, Nissei Plastic Industrial, Placo, Kawasaki Heavy Industries, IHI
Overview
Japan Steel Works, Ltd. is a major player in the machinery industry established in 1950, with strengths in manufacturing large cast and forged steel products, resin injection molding machines, and defense equipment both domestically and internationally.
Current Situation
Japan Steel Works, Ltd. recorded consolidated revenue of approximately 252.5 billion yen, operating profit of approximately 18 billion yen, and net profit of approximately 14.3 billion yen for the fiscal year ended March 2024, maintaining a stable financial foundation. Its core businesses are large cast and forged steel products and plastic injection molding machines, boasting high technological prowess in Japan's machinery industry. In the defense equipment sector, it continues to produce tank and warship artillery, earning trust from the Self-Defense Forces as a reliable manufacturer. In industrial machinery, it leverages laser equipment for electronics and special steel processing technologies, focusing on new technology development. In recent years, it has withdrawn from wind turbine manufacturing and shifted its technologies to structural materials and plant-related applications. It is also committed to sustainability, promoting community contributions and artisan skill succession activities. As a member of the Mitsui Group, it benefits from a stable network and is implementing a medium- to long-term growth strategy toward 2030. Overseas expansion is limited, with a focus on strengthening competitiveness in defense and industrial machinery within Japan. Recent developments include production efficiency improvements using information technology and investments in technological innovations in the defense industry.
Trivia
Interesting Facts
- Muroran Plant is the only company in Japan implementing Japanese sword forging technology succession.
- There is a misconception that Japan Steel Works manufactured the main guns of the Yamato-class battleships.
- Holds the domestic-only large cast and forged steel technology for defense equipment gun barrels.
- Belongs to the Mitsui Group with stable financial base of 19.7 billion yen in capital.
- Withdrew from wind power equipment manufacturing in 2019 and repurposed technologies to other fields.
- Supplies all main guns for Type 10 tanks, core of the defense industry.
- Dispatches employees to the Institute of Industrial Technology Junior College to focus on engineer training.
- Involved in casting the curved road bridge girder for the Edobashi Junction on the Metropolitan Expressway.
- Japan Steel Works shares are nicknamed 'Arm' in the stock market.
- Founded in 1907 with introduction of British technology, historic steelmaking company.
- Major subsidiaries include Japan Steel Works M&E and Meiki Seisakusho (absorbed and merged in 2020).
- As a Mitsui Zaibatsu affiliate, has extensive domestic and international transaction networks.
- Operates personnel dispatch system to Institute of Industrial Technology Junior College in Amagasaki, Hyogo Prefecture.
- Japan Steel Works is expanding into semiconductor and LCD manufacturing equipment.
- Large gun barrel manufacturing technology for defense equipment is specialized with high international competitiveness.
Hidden Connections
- Leverages Mitsui Group's capital and customer networks to promote joint research and development.
- Collaborates with defense-related companies to contribute to Japan's security technology foundation.
- Technologies after wind turbine withdrawal applied to improve durability of power plant parts.
- Injection molding machine technologies expanded laterally to semiconductor equipment and electronic parts.
- Multifaceted transaction relationships with Mitsubishi Heavy Industries, IHI, and other defense/heavy industry companies.
- Deeply involved in local forging skill preservation and traditional industry revitalization.
- Uses Institute of Industrial Technology Junior College for manufacturing talent development and industry-standard technology succession.
- Provides technical cooperation for Metropolitan Expressway structures, supporting Japan's infrastructure.
Future Outlook
Growth Drivers
- Increasing defense-related demand and strengthening security domestically and internationally
- Global demand expansion for high-precision cast and forged steel products
- Technological innovations for electronic components and semiconductor manufacturing equipment
- Increasing demand from advanced industrialization and digitalization of industrial machinery
- Utilization of synergies with Mitsui Group
- Promotion of smart manufacturing with IoT and AI
- Strengthening new materials development and applied technologies through public-private partnerships
- Increasing opportunities for overseas expansion in defense and industrial machinery
- Growing demand for sustainable products and environmentally responsive materials
- Strengthening technology succession through collaboration with local industries and talent development
- Enhanced rapid response capabilities to diversifying customer needs
- Increasing demand accompanying government infrastructure investment expansion
Strategic Goals
- Expand market share domestically and internationally in large cast and forged steel
- Achieve full automation of production lines with AI introduction
- Establish international competitiveness through high-performance defense equipment
- Promote use of sustainable materials to over 50%
- Become global leader in next-generation injection molding machines
- Establish technology succession system through collaboration with local industries
- Target 20% sales growth through overseas market development
- Complete smart factories and promote DX for efficiency
- Promote active roles and diversity for women and young engineers
- Build product collection and recycling systems
Business Segments
Power Plant Equipment
- Overview
- Segment involved in manufacturing and supplying parts and equipment for power generation facilities.
- Competitiveness
- High-durability large cast and forged steel technology
- Customers
-
- Electric power companies
- Plant construction companies
- Chemical plant companies
- Products
-
- Steam turbine components
- Wind power tower and blades
- Power plant cast steel products
Industrial Machinery Manufacturing
- Overview
- Development and manufacturing of high-performance machinery and parts for industrial use.
- Competitiveness
- Precision machining and technological development capabilities
- Customers
-
- Semiconductor equipment manufacturers
- Electronic device manufacturers
- Various machinery and equipment manufacturers
- Products
-
- Semiconductor equipment components
- Laser processing equipment
- Injection molding machine components
Defense Equipment Manufacturing
- Overview
- Manufacturing of high-quality artillery guns and firing systems for defense applications.
- Competitiveness
- Domestic-only large gun barrel manufacturing technology
- Customers
-
- Self-Defense Forces
- Defense equipment manufacturers
- Products
-
- Tank artillery guns
- Warship gun weapon systems
Steel and Metal Products Manufacturing
- Overview
- Supply of iron and steel components through casting and forging.
- Competitiveness
- Long years of steel processing technology
- Customers
-
- Steel manufacturers
- Construction machinery manufacturers
- Products
-
- Steel plate processed products
- Steel pipe products
Competitive Advantage
Strengths
- Domestic-only technological strength in large cast and forged steel manufacturing
- Strong support system from the Mitsui Group
- High reliability in domestic defense equipment sector
- World top-class market share in plastic injection molding machines
- Technological shift toward electronics and semiconductors
- Stable financial foundation
- Integrated system from manufacturing to development
- High production quality by skilled artisans
- Supply of high-durability parts for domestic power plants
- Long-term trusted relationships in local communities
- Advanced precision machining technology
- Accumulated technology from wind turbines
- Patented technologies in defense
- Active talent development system
- Stable relationships with long-term customers
Competitive Advantages
- Only technology in Japan capable of manufacturing large gun barrels
- Diversified business across wide industrial sectors
- Utilization of Mitsui Group's funding and customer networks
- High entry barriers in defense equipment market
- Product competitiveness based on advanced forging and casting technologies
- Global brand power in plastic molding machinery
- Accumulated know-how in precision machinery manufacturing
- Supply capability for special components in industrial power equipment
- New product creation through aggressive R&D investment
- Strength of artisan culture through technology succession
- Flexible customized production system
- Product design capabilities compliant with defense regulations
- Quality assurance system in steel processing
- Deep customer understanding specialized by industry
- Promotion of environmentally responsive product development
Threats
- Uncertainty in demand due to fluctuations in domestic defense budget
- Technological advances by overseas competitors such as China and Korea
- Risks from global resource price fluctuations
- Intensifying competition for highly skilled talent
- Challenges with aging manufacturing equipment
- Cost increases due to stricter environmental regulations
- Global supply chain risks
- Strengthened international regulations on defense technology
- Profit impacts from exchange rate fluctuations
- Delays in responding to accelerating technological innovation pace
- Risk of factory shutdowns due to natural disasters
- Production delays due to raw material shortages
Innovations
2024: Development of Lightweight Technology for Large Cast and Forged Steel Products
- Overview
- Established lightweight technology for large cast and forged steel using high-strength materials.
- Impact
- Achieved improved durability and cost reductions for power plant parts.
2023: Renewal of High-Precision Laser Annealing Equipment
- Overview
- Successfully improved performance of laser equipment for semiconductor manufacturing.
- Impact
- Contributed to increased orders from domestic and international semiconductor manufacturers.
2022: High-Performance Upgrade for Defense 120mm Smoothbore Gun
- Overview
- Improved durability and firing accuracy for next-generation tank guns.
- Impact
- Expanded orders accompanying Self-Defense Forces' new tank introductions.
2021: Introduction of AI Control Functions in Plastic Injection Molding Machines
- Overview
- Developed AI technology for automatic optimization of molding quality.
- Impact
- Contributed to significant improvements in production efficiency and yield.
2024: Introduction of Robot Assistance for Skilled Technicians at Muroran Plant
- Overview
- Introduced robots to improve safety and efficiency in forging operations.
- Impact
- Reduced worker burden and improved productivity by 20%.
2023: New Material Development for Special Steel Plates for Chemical Plants
- Overview
- Launched special steel plates with superior heat and corrosion resistance.
- Impact
- Gained high evaluations from chemical plant manufacturers.
2022: Development of Cast and Forged Steel Parts for Waste Heat Recovery Power Generation Equipment
- Overview
- Developed high-durability parts for environmentally friendly power generation equipment.
- Impact
- Responded to stricter environmental regulations and expanded orders.
2021: Introduction of Laser Micro-Processing Technology for Electronic Component Manufacturing
- Overview
- Developed next-generation laser equipment for high-precision micro-processing.
- Impact
- Established competitive edge in semiconductor manufacturing equipment field.
2020: Digital Archive Development for Artisan Skill Succession
- Overview
- Built a system to support succession of forging technologies.
- Impact
- Reduced risks of losing skilled technicians' expertise.
2024: Smart Factory Promotion Project Launched
- Overview
- Established IoT production processes and digital management infrastructure.
- Impact
- Achieved 15% improvement in production efficiency and quality enhancement.
Sustainability
- Implementation of activities to inherit and promote local artisan technologies
- Promotion of longer life for durable parts used in construction plants
- Energy-saving manufacturing aimed at reducing environmental impact
- Enhanced safety management for improved working environment
- Promotion of circular resource utilization
- Local disaster support activities
- Promotion of renewable energy utilization
- Efficiency improvements through digitalization of manufacturing processes
- Goal setting and progress management for CO2 emission reductions
- Waste reduction through made-to-order production
- Promotion of training and employment of female engineers
- Collaboration with suppliers on sustainable procurement