... etc Packing: coil,spool,bundle,wooden case etc Stainless Steel Spring WireCharacteristics: Uniform and beautiful surface condition, stable linearity, ... cast and helix, good coil-forming ability for the spring.Diameter: 0.2mm-15.0mmGrade:316,304,200,201, ... helix, it can be widely used for rolling various precision spring.MaterialChemical compositionGradeCSiMnPSNiCrCuMoOther2010.1515.5-7.50.060.033.5-5 ...