The pitched coil spring has significant advantages over the round wire spring in terms of bending resistance, friction, compact design, and sensitivity to overload. . Mainly used in the scene of micro stiffness and long stroke . Better bending resistance and reduced friction . More compact design: The design of the flat wire spring allows its spring length to be shortened by up to 50% . Since the effective working length of the flat wire spring is close to its compression length, the sensitivity to overload is improved.