Minshuo hot coil spring workshop has three large-scale hot coil spring production lines, which are mainly made of 60Si2Mn, 50CrVA, 55CrSi, 65Mn, 55CrSi, sup 1-10, ANSI and other materials. The wire diameter of spring steel wire is between 10-95mm, which is used in automobile, railway, power station, engineering machinery, mining machinery, construction machinery, coal mill spring Support and hanger spring, electric equipment spring, electric elevator and other fields.