Galvanized Karfe ruwa tankya ƙunshi babban ingancin ƙaramin ƙarfe na carbon Q235 B ko Q345 aji, tare da aminci, ɗorewa, rigakafin lalata, mai hana girgiza, da juriyar girgizar ƙasa.
Karfe gada ne gada wadda babban hali tsarin shi ne karfe, shi ne amfani da filin na kasa tsaro fama shiri da kuma harkokin sufuri injiniya.