Cann't you be an iron policeman after graduating from the police academy?

Railway police do not belong to civil servants, but belong to the management of civil servants established by enterprises. This is independently recruited by the railway department. As for how to get in, you should ask the railway department. To tell the truth, if you don't graduate from the Railway Institute, unless you have acquaintances, it will be difficult for you to get in. It is better to apply for civil servants, at least the public security bureau is a civil servant, which is much better than the enterprise nature of the railway police.