Located in the heart of the Keihin industrial precinct, the Kawasaki factory is Nippon Chuzo’s main production facility. It is equipped with an integrated castings production system that encompasses the full range of processes from design through to product assembly.
The manufacturing section has different facilities for mold fabrication, steelmaking, molding, heat treatment, machining and assembly and other processes, all fitted with advanced high-performance manufacturing systems with the capacity to produce a variety of castings in sizes ranging from several kilograms through to huge pieces weighing 50 tons or more. We offer an extensive range of alloy steel materials designed with specific properties such as heat resistance, wear resistance and corrosion resistance, as well as the exciting new low thermal expansion LEX series.
The Kawasaki factory houses the accumulated experience and technical skills of many years of operation and features a stringent quality control system. The facility is used for the design, development and manufacture of an extensive range of bridge construction members including bearing members (typically rubber and steel bearings), high-performance expansion joints with extended travel, and anti-collapse mechanisms, as well as construction materials such as joints and pedestals for spatial structures.

The Fukuyama factory began operations in 1967 as a metal mold manufacturing facility supplying durable long-lasting steelmaking molds produced via the blast furnace molten iron direct casting method. Over the years, the Fukuyama factory has brought out many different casting products in response to evolving market demand. Today it is a key player in the domestic casting industry, boasting an extensive and diverse range of products.
The Fukuyama factory employs the latest equipment and technology, such as blast furnaces with hot charge melting and furan molders that employ furan resin binder. A rigorous quality control system ensures that all products meet the highest quality standards. The Fukuyama factory boasts a dedicated horizontal continuous casting system from Technica Goose in Germany that is used to make “mighty bar” iron. Industrial machinery components made from “mighty bar” iron offer vastly superior performance relative to conventional sand mold castings, particularly with respect to material composition, cutting and machining performance, mechanical properties and quality consistency.

Nippon Chuzo operates an extensive R&D program geared towards developing the products and technologies of tomorrow, with a particular emphasis on exploring exciting new domains of technology designed to benefit society as a whole. The R&D program is broadly divided into product development, where the focus is on designing solutions for specific requirements, and pure research, which includes pursuing both the fundamentals as well as innovative new forms of technology.
At Nippon Chuzo, we take a long-term approach to R&D. Our research and development teams work closely with other departments to enhance the efficiency, speed and flexibility of R&D operations throughout the JFE Group, backed by a powerful support structure.
This approach has earned us a reputation as a reliable supplier of high-precision formed and fabricated pieces for modern high-precision manufacturing applications in a range of industries, particularly following the release of the new LEX series of low thermal expansion materials. In the machinery and engineering sectors, meanwhile, Nippon Chuzo is steadily building up new markets in special-purpose products such as rotary reclaimers for casting sand and NC base plate hardware used in building construction.