This product is used for auto parts, used by GM
A compression spring (CompressionSprings) loaded pressure resistance strength of foreign. A compression spring is spring steel wire pitch coiled and fixed line diameter. The use of a compression spring more open coil external load (such as gravity pressing wheel, or the body pressure in the mattress) supply resistance forces. That is, they pushed back against external pressure. A compression spring is generally wire pitch coiled and fixed line diameter. In addition, also has a conical compression spring, or conical and linear combinations of spring. According to different applications, the compression spring can be used for pressure resistance and (or) for energy storage. Round wire compression spring is the most commonly used compression spring wire, but there are square, rectangular and special shape making.