Prefabricated iron stairs can be distinguished from other prefabricated stairs. The reason for this difference is the ability to be painted and ductile iron prefabricated stairs, which has made it possible to build and install it according to the customer's opinion and taste by observing the standards of prefabricated stairs. Installation of prefabricated iron stairs is the same as other prefabricated stairs. In environments that require large prefabricated stairs, the best solution is to use prefabricated iron stairs. The reason for using prefabricated iron stairs in these environments is that the price of iron is more reasonable than other metals. Such stairs require high accuracy and skill to build. Among the advantages of using this prefabricated model, we can mention their durability and high resistance.