Cast iron wrought iron fitting is rough with the mold forming surface, here is not much to say, forged wrought iron fitting is made of special wrought iron material.
To do wrought iron gates depends on how big your door is to use side slabs. Generally, 40*60*2 forged embossed square tubes are used. In the middle, 16*16 forged embossed square steel is used, and curved flowers are generally 14*6. The embossed flat iron or thicker flat iron, while some flower pieces can be used 6-8 large round steel.
As for the bending equipment, it can only play a supporting role, and the flowers that are bent out must be corrected by the master.