2. Spring steel wire is made of spring steel after rolling and heat treatment. According to different uses, it can be divided into: ordinary spring steel wire, important spring steel wire, stainless steel spring steel wire, chromium-silicon spring steel wire, silicon-manganese spring steel wire, and so on. At the same time there are different diameter specifications.
3. When making the spring, use strong force to wind the spring steel wire on the fixed die for molding. Because the spring steel wire is already a semi-finished product when it leaves the factory, it can be used after winding and forming.