What is double spring?

A double spring refers to a single spring wire that has been coiled twice to create two parallel springs. This technique is used to increase the strength and durability of the spring while also preventing it from twisting or bending. In double spring construction, the coils are wound in opposite directions which provides counteracting forces that help to stabilize the spring. Double springs are commonly used in various applications, including automotive, industrial and household items such as mattresses, trampolines, and doors. They are known for their superior strength and durability, making them a reliable choice for heavy-duty applications.