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Dainetsu Co., Ltd. is a metal heat treatment processing company with three factories: the headquarters factory and Minato factory in Sakai City, Osaka Prefecture, and the Kochi factory in Kochi Prefecture. At our headquarters factory, we handle a wide range of heat treatment processes for steel materials, including quenching and tempering, annealing, normalizing, and solution treatment, accommodating items from small parts to those exceeding 15 tons. Additionally, at the Minato factory, we perform surface heat treatments such as oxidation-free quenching and tempering using an all-case atmosphere furnace, gas carburizing, and carburizing nitriding, as well as shot blasting. At the Kochi factory, we can handle general heat treatment processes for steel materials, including quenching and tempering, annealing, normalizing, and solution treatment, accommodating large diameter rings up to φ2700. [Business Activities] ■ General metal heat treatment processing [ISO Certification] ■ ISO 9002 certification obtained ■ ISO 9001 certification obtained *For more details, please download the PDF or feel free to contact us.
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【Major Clients】 - Kawasaki Heavy Industries, Ltd. - Sanyo Special Steel Co., Ltd. - Nippon High Frequency Steel Industry Co., Ltd. - Shin Nippon Koki Co., Ltd. - NTN Kongo Seisakusho Co., Ltd. - Nippon Pillow Block Co., Ltd. - Fuji Forging Co., Ltd. - Yamazaki Machinery Co., Ltd. *For more details, please download the PDF or feel free to contact us.
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The Dainetsu Group is a historic company that has been in operation for about 200 years since the 10th year of the Bunka era (1813 AD). The Dainetsu Group consists of three companies: Dainetsu Sanyo Metal in the heat treatment sector and Dainetsu Trading in the commercial steel plate sector. Dainetsu Co., Ltd. has its headquarters and Minato factory in Sakai City, as well as a factory in Kochi Prefecture, making it a metal heat treatment processing company. The products handled include large components for construction machinery, machine tools, wind power generation, and parts related to automobiles, with a particular expertise in heat treatment of large products. In recent years, the company has developed heat treatment equipment equipped with mist cooling and has received numerous high evaluations from government bodies such as the Ministry of Economy, Trade and Industry and Osaka Prefecture.
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