SM-EV is a galvanized steel pipe threaded sleeve made of rolled mild steel with zinc-nickel alloy. This threaded sleeve is used for the galvanized steel pipe Staro Gewinde-ES-V and the flexible steel pipes FFS-ES and FFSK-ES-UV. This product is suitable for laying cables with functional integrity (E30/ E60/ E90) and has been tested in the system.0605 DIN EN 61386-21