... SK4 1.thinkness:0.3-3.0 2.width:25mm-380mm Spring steel stripe SK4 1.Thickness0.3-3.0mm2. ... deep red, automobile clutches, rolling doors, clocks spring, lock, footwear, textiles, and a variety of industry standard parts. Products both flatness, stability ... surface finish, are of similar domestic products of superior quality, in fact, the above raw materials industry of choice. Spring steel stripe SK4