Kebanyakan steel grating memiliki permukaan bergerigi atau bertalang, yang membantu mencegah selip dan meningkatkan daya cengkram.Hail: Hailstones hitting the metal roof or partitions make load, sharp Seems which will really feel too much to handle and in some cases terrifying  in extreme climatic conditions.Oleh karena itu, produk grating sangat