Mitsubishisteel at a glance

In automobile and truck

Hot-rolled Special Steel Bars for Automotive Parts
(Crankshaft, connecting rod, camshaft, etc.)

Our highly trusted special steel bars are used for vital automotive parts such as the engine, power train and suspension. Modern automobiles are being made lighter with lower fuel costs, in an effort to protect the environment.

In automobile and truck

Coil Springs

We produce springs that improve ride comfort, reduce overall vehicle weight and require less mounting space.
Furthermore, in the context of reducing CO₂ emissions through improved fuel efficiency, there is a demand for weight reduction in automobiles. Our springs contribute to this by reducing the weight by 20% compared to traditional ones.

In automobile and truck

Stabilizer Bars

Stabilizer bars prevent the horizontal tilt caused by turning an automobile or by driving on uneven surfaces. This enhances steering characteristics and riding comfort.

In automobile and truck

Leaf Springs

Our leaf springs, often used in truck and trailer suspensions, are manufactured with the latest in manufacturing technology, under strict quality control. Our long tapered leaf springs are particularly effective in decreasing weight and increasing durability.

In automobile and truck

Turbocharger Parts

By incorporating turbochargers, we are contributing to the improvement of automobile fuel efficiency.

In automobile and truck

Special Alloy Powders

In addition to being used in engine valve seats and turbocharger vanes, it is used not only in automobiles but also in a wide range of fields such as electronic devices. It is also used in the inductors of electronic control components, and an expansion of its applications is expected with the advancement of electric vehicle (EV) technology.

In automobile and truck

Automotive Parts

We handle a variety of products for use in cars and trucks. We have 12 service centers nationwide, each equipped with stock and sales representatives, to ensure immediate delivery of our products and services.

At civil engineering and construction sites

Hot-Rolled Special Steel Bars for Construction Machinery Parts
(Hydraulic Pressure Cylinder, Swing Bearing, Sprocket, etc.)

Construction machinery is used more harshly than automobiles. We produce special steel with high strength and durability to meet these needs and provide it to our customers.

At civil engineering and construction sites

Heavy-Duty Coil Springs

Our heavy-duty coil springs are produced in exclusive manufacturing lines worldwide, capable of handling such parts from standard specifications to ultra-large diameter specifications. Applications include construction machinery, rail cars and industrial equipment.

At civil engineering and construction sites

Tire Protectors

Designed for construction machinery, these tire protector chains were developed using special wear-resistant steel technology.
They promote reliability by safeguarding against tire bursting and reducing wear on tire surfaces on ground covered by sharp rocks.

At civil engineering and construction sites

Industrial & Construction Machinery Tire Chains

These tire chains are essential for the snow removal required to keep roads safe under snowy conditions.
They are also used for industrial and construction machinery used on-site in snowy weather.

At civil engineering and construction sites

Rubber protective road pads for hydraulic excavator use

These rubber pads are mounted to hydraulic excavator crawlers deployed for urban civil engineering work to protect roads from damage.

In railway vehicles

Springs for Railway Vehicles

Springs for railway vehicles not only need to ensure safety but also require high strength and quality to make daily life and long-distance travel more comfortable. As the oldest spring manufacturer in Japan, we globally supply springs for railway vehicles, particularly specializing in heavy-duty springs, utilizing our long-cultivated technology and know-how.

Factory

Special Steel Bars used in Manufacturing and Industrial Machinery

Various special characteristics such as high mechanical strength, high precision etc. are demanded for special steel bars used as parts of machine tools and working machines. The company manufactures special-purpose special steel bars to meet the diverse needs.

Factory

Industrial facilities equipment (Free Forging Presses, Ring Rolling Mills, etc.)

We design and manufacture equipment such as Free Forging Presses, Ring Rolling Mills, and associated manipulators, which play a role in production facilities in various industries such as the steel industry. We also manufacture weighing devices to prevent overloading and conveyance devices to achieve labor-saving. Additionally, we manufacture weighing devices to prevent overloading and conveyance devices to achieve labor-saving.

Factory

Magnetic separators

We are contributing to the circular economy by developing magnetic sorting machines that recover recyclable resources from waste appliances and motors.

Factory

Anti-vibration device

Vibrations generated by machinery can be transmitted to the foundation and surrounding areas, deteriorating the surrounding environment. The main role of Anti-vibration device is to attenuate and absorb this vibrational energy.
Our group company, Mitsubishi Nagasaki Machinery Mfg. Co., Ltd., provides Anti-vibration device tailored to the characteristics of various machinery and devices, based on our extensive track record. This is achieved by optimally combining elastic elements (coil springs, disc springs, air springs, vibration damping rubber) and damping devices.

Springs Business

various hinges (digital cameras, Laptop computer, etc.)

We can serve customer's high needs for information equipment, various hinges and antenna parts with our technology strength;
we handle design, precision parts processing, and high precision assembly with our wide range assemble and processing technology, such as laser welding, insert molding and bonding technology for dissimilar materials.

Springs Business

Machined Metal Parts (for Personal computer, etc.)

Based on the material knowledge we have cultivated over the years as a special steel manufacturer, we produce precise machined parts with high productivity and cost benefits. They are used in a wide range of fields, such as information device terminals and precision devices like cameras.

Our group company, Mitsubishi Steel Muroran Inc. has obtained the 'TPG certification' as a supplier of steel materials for offshore wind power generation equipment parts, and is committed to contributing to the establishment of a domestic supply chain for offshore wind power by leveraging our group's strength in dealing with large-scale products.

In one effort to contribute to offshore wind power generation, Mitsubishi Steel Group member company Mitsubishi Nagasaki Machinery Mfg. Co., Ltd. manufactures products for offshore wind turbines and the machine and equipment needed to install them. We are also focusing on expansion and enhancement of plant facilities to increase production capacity for offshore wind power-related products.