This is the 9807th most frequent Japanese word.
製鉄
Iron and steel manufacturing.
Here, '製鉄' is used as part of the term '製鉄所', meaning 'steel mill', which is a place where steel manufacturing occurs.
製鉄所に勤務しています。
I work at a steel mill.
In this sentence, '製鉄' refers to the steel production industry, emphasizing its industrial aspect.
この地域は製鉄産業で有名です。
This region is famous for its steel industry.
The term '製鉄' is directly referring to the process of making steel.