耐火 たいか被覆 ひふく ざいじゃありませんでした
taikahifukuzaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 耐火被覆材

1. Was not fireproof coating.; Was not a fire-resistant covering.

Past/Perfective
Negative
Polite
Terminal Form