宏栄スプリング工業 List of Products and Services

Koei Spring Industry Co., Ltd. is a "specialized manufacturer of custom springs." It pulls in what is extended and pushes back what is contracted. The operation of springs may seem simple, but when conditions such as high temperatures of several hundred degrees or the passage of several decades are involved, the situation becomes suddenly complex. Our special springs are used in various fields, including "valve opening and closing for marine engines," "tension for construction machinery's endless tracks," and "shock absorption for industrial vehicle chassis." Because the energy is generated solely from the shape of the metal, we focus our efforts on the precision of that shape. 【Currently Active in These Areas (Excerpt)】 <Transportation Sector> ■ Aerospace: Pressure vent valve for fuel pipelines ■ Marine: Valve opening and closing for marine engines ■ Construction Machinery: Tension for construction machinery's endless tracks ■ Vehicle: Shock absorption for industrial vehicle chassis *For more details, please refer to the PDF document or feel free to contact us.

• Spring
• Contract manufacturing

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.

• Spring
• Contract manufacturing

Introducing the precision spring catalog from Koei Spring Industry Co., Ltd. The products created by Koei Spring Industry Co., Ltd. range from ultra-small springs with a wire diameter of 0.1mm to large springs weighing 450kg, totaling approximately 10,000 types annually. The common commitment that runs through all of them is "high precision." This is achieved through carefully selected materials, manufacturing know-how that relies not only on machines but also on skilled craftsmanship, and stringent quality standards that exceed JIS regulations. Our products, aimed at unparalleled precision, have earned the trust of many users. For more details, please contact us or download the catalog.

• Technical and Reference Books
• Spring