noun
ironworks; iron foundry
A factory or workshop where iron is processed or iron products are made.
祖父は若い頃、鉄工所で働いていた。
My grandfather worked at an ironworks when he was young.
この町には小さな鉄工所がいくつかある。
There are several small ironworks in this town.
製鉄所 is a large-scale steel mill or ironworks, while 鉄工所 is typically a smaller workshop or factory for iron processing.
Compound of 鉄 (iron) + 工 (work, craft) + 所 (place).