... spring material:60Si2Mn wire diameter:22mm length:1380mm used in insdustry machine super huge compression springmaterial:60Si2Mnwire diameter: ... :leftsurface:peen shottingXULONG SPRING established in 1979,after over 30 years' harding working in this field,now XULONG SPRING ... spring,suspension spring,low spring,assemblies,etc,widely used in auto,appliance,energy sources and furnature.XULONG SPRING's mine ...