... annealing material,hot rolled steel strip.1) Surface: bright,blue,yellow,black.2) Materials: 65Mn, 50#, Special Type (T8-T10), ... woodworking band saw, automatic clutch patch, reeling shutter spring steel strip(round edge), horologe clockwork spring, lock making, shoes ... spin, standard stamping, packing strip, and other industrial-used steel strip.5) Packing: Anti-rust paper, corner protected, according ...