Does Iron rod comes under dangerous weapon

There is no speciffic law dictating dangerous weapons. However, there have been judgements where upon the convicion has been sought based on the weapon which was an iron rod adn the same was provided for by the Court. It is important to note the case of Bijender @ Naushad v. State (2014) where the Court provided that though every iron rod may not qualify as a deadly weapon, an iron rod which is 53 cms long and has pointed ends on both sides can certainly cause death of a human being, if it is used as a weapon of offence at a vital part of the body such as head of a human being.

You may refer to the following articels for more information  

https://www.lawyersclubindia.com/articles/critical-appraisal-of-judgements-passed-by-supreme-court-of-india-in-2012-awarding-death-sentence-5697.asp

https://www.lawyersclubindia.com/articles/indian-evidence-act-in-a-nutshell-9130.asp