軽量 けいりょう形鋼 かたこうじゃなかったです
keiryōka takōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 軽量形鋼

1. Wasn't lightweight steel.; Wasn't a lightweight steel form.

Past/Perfective
Negative
Polite
Casual Register