We handle everything from material heat treatment to finished product heat treatment, even for a single item! Please feel free to entrust us with your heat treatment processing.
Dainetsu Co., Ltd. primarily conducts heat treatment of material products at its headquarters factory and Kochi factory, as well as at the Minato factory, which performs heat treatment of finished products, operating 24 hours a day across three factories. We handle everything from handheld products to long products, responding carefully to requests from one piece. Additionally, we have a robust quality assurance system in place, supported by comprehensive inspection equipment and strict inspection standards based on our company regulations. We provide suitable heat treatment methods tailored to customer needs based on over 500,000 heat treatment data entries. 【Strengths】 ■ Support for heat treatment from material to finished products, starting from one piece ・Quenching and tempering: capable of handling single weights up to 16 tons ・Stress relief annealing: capable of handling single weights up to 35 tons ■ Stable quality assurance system ■ Correction capability for diameters up to φ400 ■ Excellent carbon prevention technology facilitates post-processing *For more details, please refer to the PDF materials 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.