rolling shutter spring steel

Product Description

We are a professional producer for anneal / hardened & temperated steel strip materials , main grade Ck*5/ck*0/ck*0/ck*2/ck*7/ck*5/ck*5 etc , thickness 0.*0mm to 2.5mm , width 8mm to **0mm , tolerance +/*0.*2mm , width *0 /*0.1mm , hardness , surface , package etc according to buyer requirements !Range suitable for tools, spring, automatic clutch patch, reeling shutter door, woodworking band saw, Motorcycle and Bicycle Chains, various 1. grade:CK*0/CK*0/CK*7/CK*0/CK*5, C*5Cr1, *0CrV4, *0Si2Mn. 2.Sepecification: 0.*5mm- 2.5mm 3.Width:8mm***0mm 4.Surface treatment: heat treatments. 5.Standard of reference:GB, DIN, JIS. 6.steel of surface:Polished , blue, yellow, white, gery-blue, black, bright, nature. 7.useful:, material used in rolling shutter spring , rolling door, band saw, putty, shoe material accessories, shoe toe cup, shoe shank , hooks , knift , spring clips, autoparts, constant force spring, clock main spring, toy spring , power spring, steel for clock spring, power springs, recliner spring, feeler gauges, doctor blades 8.Hardness:****8HRC for cold rolled process, ****5HRC for hardened and tempered process, below *0Hrc for annealed process. 9.Packing: Each coil with anti-rust paper wrapped and plastic film with material pallet and put into *0ft container or standard sea worthy.