Stretch spring is designed to produce a specific tension when it is stretched for a certain length. For different environments and applications, stretch spring can adopt many different materials and flexible designs. By adjusting the outer diameter, wire diameter, length, material and number of turns of spring, we can obtain unlimited spring size and tension. At present, the wire diameter of standard parts of tension spring provided by our company ranges from 0.10 mm to 8.00 mm, and the tension spring has a wide range of applications. At present, the tension spring produced by our company is mainly used in high-speed rail parts, special elevator door machine, automobile tail door, etc Mechanical equipment spring, industrial numerical control spring, medical equipment spring, etc. Xinyi spring has long-term experience in designing and producing stretch springs of various materials, and continuously pays attention to the improvement of production process. Our core competitiveness is reflected in the spring product design and development capabilities, strict quality control, good delivery and service. All our efforts are only to meet your demand for extension spring.