K 67 SPRING STEELHARDNESS 43HRCTHICKNESS : 2.5MMQTY:3.000 U Standard:AiSi Standard:ASTM Standard:DIN Standard: hard GB Standard:JIS Place of Origin:CN;GUA Technique:Cold Rolled Surface Treatment:Polished Steel Grade:Ck67ck70ck75 Sae1070 Sae1074 Application:Industry Width:8-300mm Length:Customer\'s Request Product Name:High Carbon Steel Strip Spring Surface:Heat treatment Grade:ck60,ck67,ck70,ck75,C75cr1 SAE 1060, SAE 1065, SAE 1070, SAE 1075 Color:Blue, polished blue, polished bright Material:carbon steel coil Edge:Round, slit, square Certificate:ISO9001:2008/SGS/BV Thickness:0.15-2.5mm Hardness:<20hrc, 20-30hrc, 30-55hrc