波は形けい鋼こう板ばん

noun

corrugated steel plate; corrugated iron

Refers to a steel sheet formed into a wavy pattern for strength; used in construction and roofing.

• この倉そう庫この屋や根ねは波は形けい鋼こう板ばんでできている。

  The roof of this warehouse is made of corrugated steel plate.