... : 0.1-3.0mm 3) Width: 3-80mm Carbon Steel Coil Spring1) Material: 62Si2MnA, 65Mn, SK3,SK4, SK5, SUS301,3042) ... a professional manufacturer specialized in producing all classes of springs for Industrial machine,(ie. garden hose reels, balancer, Retractable Dog ... machine, fan, oven,etc...).And are specialized in producing springs for various kinds of carbon and stainless steel products and supplies ...