... , excellent cast and helix, good coil-forming ability for the spring.Diameter: 0.2mm-15.0mmGrade:316,304,200,201,202 ... coil,spool,bundle,wooden case etcApplication:Producted in accordance with the specifications of JIS, with stable linearity, excellent cast and ... it can be widely used for rolling various precision spring.MaterialChemical compositionGradeCSiMnPSNiCrCuMoOther2010.1515.5-7.50.060.033.5-5 ...