溝みぞ形がた鋼こう

noun

channel steel; C-channel

Technical term in construction and engineering for a steel section with a U-shaped cross-section.

• 建けん築ちく現げん場ばでは、溝みぞ形がた鋼こうが梁はりとしてよく使つかわれる。

  At construction sites, channel steel is often used as beams.