1)Materials:Carbon spring wire(65Mn,70#,72A,72B,82B)
Piano wire(SWPA,SWPB)
Stainless steel wire(201,202,301,302,304,316,631)
Alloy wire(60Si2MnA,55CrSi,50CrV,60SiCr8A,60Si2CrA,etc)
Copper wire(Tin bronze, silicon bronze, phosphorus copper, brass, copper)
2)Wire diameter:Based on customer requirements
3)Surface treatment:Rust-proof oil, blackened, white-plated zinc, colored zinc, nickel-plated, chrome-plated, polished, passivation, spray-plastic, electrophoresis,etc
4)Each circle is closely surrounded or separated and can be used to twist the load(at right angles to the spring axis). The end of the spring can be hooked or twisted.