Volute springs, manufactured according to JB/T11698-2013 standard (SHANGHAI HEGONG participated in drafting the standard). Its main features are small size and large load. It is widely used in small spaces and large loads for vibration reducing. It have three structures as Equal helix angle, Equal pitch and Equal stress.
Designed according to the standard JB/T11698-2013 Appendix A.
50CrV4 , 60Si2Mn
Bluing, spray painting, etc.