Volute springs are also named as bamboo shoot shaped springs and mainly characterized by small sizes, large bearing load and variable rigidity. Being divided into such three types as equal spiral angle, equal pitch and equal stress, they are widely used for the occasions that are of small space and require large load or used in shock absorption devices. It's relatively complicated to design and produce the springs. With years of design and production experience, we are capable enough to design and produce these springs for uses, or customize products as per user's drawings or samples. Please note such data as free height, maximum deformation, maximum outside diameter, minimum inside diameter, plate thickness, working ring and total ring etc. when you place an order. We can also design products according to the load and space conditions provided by users.