亜鉛 あえんメッキ鋼板 こうばんではありませんでした
aemmekkikōbandewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 亜鉛メッキ鋼板

1. Was not zinc-plated steel sheet.; Was not a zinc-plated steel plate.

Past/Perfective
Negative
Polite
Formal Register