... diameter:22mm length:1380mm used in insdustry machine super huge compression springmaterial:60Si2Mnwire diameter:22mmlength:1380mmID:161.7mmtotal coils:21. ... in south China,can make all kinds of springs,including compression spring,torsion spring,tension spring,sprial spring,power spring, ... to stree is that all products of XULON SPRING are custom products,they are produced as per customer's drawings ...