铁管接合油泥, 防锈油泥
It's a combination on cement color with rust and navy with some white thrown in.
厂房墙壁使用的颜色是将铁锈色和海军蓝再加上白色混合而成的。
rust cement:铁管接合油泥
rust ==> 錆 | rust cement ==> 铁管接合油泥 | rust coloured glaze ==> 铁透花釉