Made of cold rolling, which turn a steel strip with a thickness from 4 to 6 mm in a non-continuous used for various purposes.
The cold rolling process has as a final result the surface hardening that gives the steel crush, increasing its hardness reaches (HRB 90 to 95) and its mechanical strength.
Our manufacturing processes are certified by ISO 9001: 2008 and accompanied by strict quality control using high quality certified raw materials.
The thicknesses and tolerances follow the European standard.
Rolled helical is treated with a layer of 0.5 mm and a hardness of 55/60 HRC.