In Muelles Melero, tension springs produce different types of hook: english, german, american or any particular form requested by the client.
The materials used primarily in our products are:
Carbon steel according to EN 10270-1 drawn or galvanized zinc coating or zinc/aluminum.
Silicon chrome-hardened steel according to EN 10270-2 (FDSiCr/TDSiCr/VDSiCr).
Stainless steel according to EN 10270-3 (AISI 302/304/316).
Wires brass, bronze, iron, etc.