Dear Sarmad,
Iron chogaths not recommended. You can see like (wood) can not fit in to unlike (iron).
Pros:
-Maintenance free
-Easy to go solution
- Usually used by contractors
Cons:
-Regardless of guage, iron chogaths with the passage of time tend to corroded.
-Qabza of door dont fit in properly inside iron chogath
-Wood door dont fit in in proper manner in iron chogath
-Lock of door dont sits in in a well manner inside iron chogath and gives and ugly look
-In case of current in home floor due to any reasons, serious electric shock danger is there if no ELCB is employed.
-Noisy closing and opening of door
-Overall looks get marks 2/10
Have a look on Wood Chogaths Fittings and Finishing



Now have a look at Iron Chogath Condition after 6 Months (Practically captures picture), now the customer is regretting on decision of installing iron chogaths.

Improper door fitting inside iron chogath. You can see big passage between door and chogath.
Qabza Finishing looks of Iron Chogath

Peoples usually afraid of termite. But as mentioned in top threads, if you install chogath above tile and after plaster of wall,chances of termite are 99% eliminated. You can visit initial threads for more info.I hope this clarifies your question. Thanks.