Ultimate handmade! As long as there are challenges with springs in this world, I want to solve them with the skills I have.
Hōei Spring Industry is a "specialized manufacturer of custom springs." We do not produce general-purpose products, but have continued to focus on manufacturing high-quality custom springs. Even challenges that would normally raise eyebrows have been solved with our accumulated knowledge and manufacturing know-how, which spans approximately 10,000 types annually, and above all, our passion for achieving our goals. Instead of mass-producing with machines, we focus on the materials and processes, performing processing at the best timing for custom springs. The careful pursuit of each step, including material selection, preheating time, number of coils, heat treatment, and polishing, results in products that surpass JIS Grade 1. 【Product Offerings】 ■ Design, manufacturing, and sales of springs ■ Manufacturing and sales of couplings *For more details, please refer to the PDF materials or feel free to contact us.
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【Manufacturing Process】 ■Material Selection ■Material Heating ■Coiling ■Quenching and Tempering ■Hardness Inspection ■End Face Cutting and Polishing ■Shot Peening ■Setting ■Fluorescent Magnetic Particle Testing ■Rust Prevention and Coating ■Shipping *For more details, please refer to the PDF document or feel free to contact us.
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For more details, please refer to the PDF document or feel free to contact us.
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While many spring manufacturers produce products for mass production, we are committed to creating reliable quality custom springs as a "specialized manufacturer of custom springs." Our technology not only produces unique products that only we can create, such as safety valve springs for chemical plants and power plants, and vibration springs for environmental plants, but it is also gaining attention from a wide range of industries, including the aerospace industry. Supporting this technology is the ultimate handmade craftsmanship backed by skilled techniques. For advanced and complex requests and challenges, trust the spring specialists at KOEI.