cold rolled hardened and tempered steel strip for rolling shutter spring
surface: good blue
edge: both rounded.
size: as usually 1.2/1.3/1.4/1.5*45/50/55/60mm.
Welcome to your letter for futher information.
cold rolled hardened and tempered steel strip for rolling shutter spring
surface: good blue
edge: both rounded.
size: as usually 1.2/1.3/1.4/1.5*45/50/55/60mm.
Welcome to your letter for futher information.